NUST Past Paper Total Time: 3 Hours

Total MCQs: 200

Topic: NET-Engineering

Mathematics Portion (80 MCQS)
If sin-1x + sin-1 y + sin-1z =3π/2 then the value of x9 + y9 + z9 – 1/ x9 y9 z9 is equal to
a. 0
b. 1
c. 2
d. 3
Show Answer
Let p, q, r be the sides opposite to the angle P,Q.R respectively in a triangle PQR. If r2 sin P sin Q = pq then the triangle is
a. Equilateral
b. Acute angled but not equilateral
c. Obtuse angled if sin
d. Right angled
Show Answer
Let p, q, and r be sides opposite to the angles P, Q, R respectively in a triangle PQR. Then 2 prsin (P-Q+R/2) equals
a. p2 + q2 + r2
b. p2 + r2 – q2
c. q2 + r2 – p2
d. p2 + q2 – r2
Show Answer
Let P (2,-3), Q (-2, 1) be the vertices of the triangle PQR. If the centroid of ΔPQR lies on the line 2x +3y = 1, then the locus of R is
a. 2x + 3y = 9
b. 2x – 3y = 9
c. 3x + 2y = 5
d. 3x – 2y = 5
Show Answer
If n(A) = m, then nP(A) =
a. 2 n
b. 2n
c. 2m
d. 2m
Show Answer
If f is a real-valued differentiable function such that f(x) f’(x) < 0 for all real x, then
a. F(x) must be an increasing function
b. F(x) must be an decreasing function
c. |F(x)| must be an increasing function
d. |F(x)| must be an decreasing function
Show Answer
Role’s theorem is applicable in the interval [-2,2] for the function
a. F(x) =x3
b. F(x) =4×4
c. F(x) =2×3 + 3
d. F(x) =π|x|
Show Answer
The solution of 25 d2y/dx2 -10dy/dx + y = 0 , y(0) =1y(1) =2e1/5 is
a. y= e5x + e-5x
b. y=(1 +x) e5x
c. y=(1 +x) ex/5
d. y=(1 +x) e- x/5
Show Answer
Let P be the midpoint of a chord joining the vertex of the parabola y2 = 8x to another point on it. then the locus of P is
a. = 2x
b. y2 = 4x
c. x2/4 + y2 = 1
d. x2 + y2/4 = 1
Show Answer
the line x =2y intersects the ellipse x2/4 + y2 =1 at the point P and Q. the equation of the circle with PQ as diameter is
a. x2 + y2 = 1/2
b. x2 + y2 = 1
c. x2 + y2 = 2
d. x2 + y2 = 5/2
Show Answer
the eccentric angle in the first quadrant of a point on the ellipse x2 /10 + y2 /8= 1 at a distance 3 units from the center of the ellipse is
a. π/6
b. π/4
c. π/3
d. π/2
Show Answer
The transverse axis of a hyperbola is along the x axis and its length is 2a. The vertex of the hyperbola bisects the line segment joining the center and the focus. The equation of the hyperbola is
a. 6×2 – y2 = 3a2
b. x2 – 3 y2 = 3a2
c. x2 – 6 y2 = 3a2
d. 3×2 – y2 = 3a2
Show Answer
A point moves in such a way that the difference of its distance from two point (8, 0) and (-8, 0) always remains 4. Then the locus of the point is
a. A circle
b. A parabola
c. An ellipse
d. A hyperbola
Show Answer
The number of integer values of m, for which the x coordinate of the point of intersection of the lines 3x + 4y = 9 and y=mx +1 is also an integer is
a. 0
b. 2
c. 4
d. 1
Show Answer
If a straight line passes through the point (α,β) and the portion of the line intercepted between the axes is divided equally at the point, then x/ α + y/ β is
a. 0
b. 1
c. 2
d. 4
Show Answer
The maximum value of |z| when the Complex number z satisfies the condition |z + 2/z| is
a. √3 b. √3 + √2
c. √3 + 1 d. √3 – 1
Show Answer
If (3/2 + i√3/2)56 =3 25 (x +iy) , where x and y are real, then the ordered pair (x,y) is a. (-3,0)
b. (0,3)
c. (0,-3)
d. (½) (√3/2)
Show Answer
If z-1/z+1 is purely imaginary, then
a. |z|= ½
b. |z|=1
c. |z|=2
d. |z|=3
Show Answer
Then inverse of q à p is ?
a. p à q
b. p à q
c. qà p
d. q àp
Show Answer
a vehicle registration number consists of 2 letters of English alphabet followed by 4 digits, where the first digit is not zero. Then the total number of vehicles with distinct registration number is
a. 262 x 104
b. 26p2 x 10p2
c. 26p2 x 9 x 10p3
d. 262 x9 x103
Show Answer
The number of the words that can be written using all the letter of the word “irrational” is a. 10! / (2!)3
b. 10! / (2!)2
c. 10! /2!
d. 10!
Show Answer
Four speakers will address a meeting where speaker Q will always speak after speaker. Then the number of ways in which the order of speakers can be prepared is
a. 256
b. 128
c. 24
d. 12
Show Answer
The number of diagonals in a regular polygon of 100 sides is a. 4950
b. 4850
c. 4750
d. 4650
Show Answer
Let the coefficients of powers of x in the 2nd, 3rd and 4th terms in the expansion of (1 +x)n where is a +ive integer be in arithmetic progression. Then the sum of the coefficients of odd power of x in the expansion is
a. 23
b. 64
c. 128
d. 256
Show Answer
The sum 1 x 1! + 2 x 2! + 50 x 50! Equal to
a. 51!
b. 51!-1
c. 51!+1
d. 51! X 2
Show Answer
Six numbers are in AP. Such that their sum is 3 the first term is 4 times the third term. Then the fifth term is
a. -15
b. -3
c. 9
d. -4
Show Answer
The sum of the infinite series 1 + 1/3 + 1.3/1.6 + 1.3.5/3.6.9 + + Is
equal to
a. √2 b. √3
c. √3/2 d. √1/3
Show Answer
The equations x2 + x+ a = 0 and x2 + ax+ 1 =0 have a common real root
a. For no value of a
b. For exactly one value of a
c. For exactly two value of a
d. For exactly three value of a
Show Answer
If 64, 27, 36, are the Pth , Qth and the Rth terms of the G.P then P + 2Q is equal to
a. R
b. 2R
c. 3R
d. 4R
Show Answer
The equation y2 + 4x +4y + k = 0 represents a parabola whose lotus rectum is
a. 1
b. 2
c. 3
d. 4
Show Answer
If the circles x2 + y2 +2x + 2ky + 6 = 0 and x2 + y2 + 2ky + k = 0 intersect orthogonally, then k is equal to
a. 2 or -3/2
b. -2 or-3/2
c. 2 or 3/2
d. -2 or 3/2
Show Answer
If four distinct points(2k,3k),(2,0),(0,3),(0,0) lie on a circle , then
a. K< 0
b. 0< K < 1
c. K = 1
d. K > 1
Show Answer
The line joining a( bcos α, bsin) and B( acos β, asin β) , where a ≠ b, is produced to the point M(x,y) so that AM:MB = b:a. then x cos (α + β/2 ) +y sin (α + β/2 )
a. 0
b. 1
c. -1
d. a2 + b2
Show Answer
let the foci of the ellipse x2/9 + y2 = 1 subtend right angle at a point P then the locus of P is a. x2 + y2 = 1
b. x2 + y2 = 2
c. x2 + y2 = 4
d. x2 + y2 = 8
Show Answer
the general solution of the differential equation dy /dx =(x+y+1/2x +2y +1 ) is
a. Log |3x +3y +2| +3x +6x =c
b. Log |3x +3y +2| -3x +6x =c
c. Log |3x +3y +2| -3x -6x =c
d. Log |3x +3y +2| +3x -6x =c
Show Answer
A⊆ ?
a. A ∩ B =A
b. A ∩ B’ =A
c. A− B =A
d. A U B =A
Show Answer
The value of the integral π/2∫ 0 1/1 +(tanx)101 dx is equal to
a. 1
b. π/6
c. π/8
d. π/4
Show Answer
the integrating factor of the differential equation 3x log x dy/dx +y = 2 log x is given by
a. log x3
b. log (log x)
c. log x
d. (log x)1/3
Show Answer
Number of solutions of the equation tan x + sec x = 2 cos x, x∈ [0, ?] is
a. 0
b. 1
c. 2
d. 3
Show Answer
The value of the integral π/4∫ 0 sinx + cosx / 3 + sin2x dx is equal to
a. Log 2
b. Log 3
c. ¼ log 2
d. ¼ log 3
Show Answer
Let y= (3x – 1/3x+1 )sinx + log (2 +x) , x >-1 then at x = 0, dy /dx equals
a. 1
b. 0
c. -1
d. -2
Show Answer
Max value of the function f(x) = x/8 + 2/x on the interval [1,6] is
a. 1
b. 9/8
c. 13/12
d. 17/8
Show Answer
A non-empty set on which a binary operation can be defined is called
a. Group
b. Semi group
c. Groupoid
d. Ableian group
e. Monoid
Show Answer
The value of the integral 2∫ -2 (1 +2sinx)e|x| dx is equal to
a. 0
b. e2 -1
c. 2(e2 – 1)
d. 1
Show Answer
If (α +√?) and (α –√?) are the roots of the equation x + px+ q =0 where α , β,p,q are real then the roots of the equation(p2 -4q) (p2 x2 + 4px) – 16q =0 are
a. (1/α + 1/√? )and( 1/α – 1/√?)
b. (1/√α + 1/?)and( 1/√α – 1/? c. (1/√α + 1/√? )and( 1/√α – 1/√?)
d. (√α +√?) and (√α -√?)
Show Answer
The number of solutions of the equation log2(x2 + 2x -1)=1 is
a. 0
b. 1
c. 2
d. 3
Show Answer
The sum of the series 1 + 1n/2 C1 + 1n/3 C2 + ……………. + 1n/n+1Cn. a. 2n+1 -1 / n+1
b. 3(2n-1)/2n
c. 2n+1/ n+1
d. 2n+1/ 2n
Show Answer
The value of ∑
a. e
b. 2e
c. e/2
d. 3e/2
Show Answer
∞ ?=2 1 + 2 + 3 + ⋯ … . (? − 1)
?! I sequal to If P =
a. 2
b. -2
c. 1
d. 0 Q=PPt , then the value of the determinant of Q is equal to
Show Answer
The remainder obtained when 1! +2! + +95! Is divided by 15 is
a. 14
b. 3
c. 1
d. 0
Show Answer
If P, Q R, are angles of triangle PQR then the value of is equal to
a. -1
b. 0
c. ½
d. 1
Show Answer
The number of real values of α for which the system of equations x +3y +5z =αx, 5x +y+3z =αy, 3x + 5y + z = αz has infinite number of solutions is
a. 1
b. 2
c. 4
d. 6
Show Answer
The total number of injections(one –one into mappings) from {a1,a2,a3,a4} to
{b1,b2,b3,b4,b5,b6,b7} is a. 400
b. 420
c. 800
d. 840
Show Answer
It the set G = {1, ω, ω2} is an abelian group w.r.t multiplication then inverse of ω is?
a. 1
b. ω
c. ω2
d. does not contain an inverse
Show Answer
Two decks of playing cards are well shuffled and 26 cards are randomly distributed to a player.
Then the probability that the player gets all distinct cards o s a. 52C26 / 104C26
b. 2 x 52C26 / 104C26
c. 213 x 52C26 / 104C26
d. 2 26x 52C26 / 104C26
Show Answer
An urn contains * red 5 white balls. Three balls are drawn at random. Then the probability that balls of both colors are drawn is
a. 40/143
b. 70/143
c. 3/13
d. 10/13
Show Answer
Two coin are available, one fair and the other two headed .choose a coin unbiased coin is chosen with probability ¾ given that the outcome is head the probability that the two headed coin was chosen is
a. 3/5
b. 2/5
c. 1/5
d. 2/7
Show Answer
Let R be the set of real numbers and the functions f:RàR and g : Rà R be defined f(x) = X2 + 2x
-3 and g(x) =x +1 then the value of x for which f(g(x)) g(f(x)) is
a. -1
b. 0
c. 1
d. 2
Show Answer
If a ,b,c are in arithmetic progression, then the roots of the equation ax2-2bx + c =0 are
a. 1 and c/a
b. -1/a and –c
c. -1 and –c/a
d. -2 and –c/2a
Show Answer
Let γ be the solution of the differential equation x dy/dx = y2/1-logx satisfying y(1) =1 then γ satisfies
a. Y =xy-1
b. Y =x y
c. Y=xy+1
d. Y=xy+2
Show Answer
The area of the region bounded by the curves y = sin -1x + x(1-x) and y = sin -1x –(1-x) in the first quadrant is
a. 1
b. ½
c. 1/3
d. ¼
Show Answer
The value of the integral 5∫ 1 [|x-3| +1-x|]dx is equal to
a. 4
b. 8
c. 12
d. 16
Show Answer
If f (x) and g(X) are twice differentiable functions on (0,3) satisfying f”(x) =g”(x), f(1) =4 g(1)=6 f(2) =3 g(2) =9 then f(1)-g(1) is
a. 4
b. -4
c. 0
d. -2
Show Answer
Let (x) denote the greater integer less than or equal to x, then the value of the integral 1∫ -1
[|x| -2[x]]dx is equal to
a. 3
b. 2
c. -2
d. -3
Show Answer
The points representing the complex number z for which arg(z-2/z+2) =π/3 lies on
a. A circle
b. A straight line
c. An ellipse
d. A parabola
Show Answer
Let a, b, c, p, q, r be positive real numbers such that a, b ,c are in G.P and ap =bq =cr then A,B,C
a. p, q rare in G.P
b. p, q rare in A.P
c. p, q rare in H.P
d. p2,q2 and r2 rare in A.P
Show Answer
a compound statement at the form “If p then q ” is called
a. implication
b. hypothesis
c. tautology
d. contingency
Show Answer
The quadratic equation 2×2(a3 +8a -1) x a2 -4a =0 possesses roots of opposite sign. then
a. a ≤ 0
b. 04
c. -1≤ ? ≤ 5
d. X<-1 0r x>5
Show Answer
The coefficient of x 10 in the expansion of 1+ (1+x) +… +(1+x)10 is
a. 19C9
b. 20C10
c. 21C11
d. 22C12
Show Answer
The system of linear equation λx+ y+ z =3, x-y-2z=6, -x + y +z =?
a. Infinite number of solutions for λ ≠-1 and all ?
b. Infinite number of solutions for λ =-1 and all ? =3
c. No solution for λ ≠-1
d. Unique solution for λ =-1 and all ? =3
Show Answer
Let A and B be two events with P(Ac) =0.3, P (B)=0.4 and P(A ∩B’) =0.5 Then P(B/(AUB’)) is equal to
a. ¼
b. 1/3
c. ½
d. 2/3
Show Answer
The set of real number is a subset of
a. Set at natural number
b. Set of whole number
c. Set of………..
d. Set of complex number
Show Answer
Let C1 and C2 denote the cents of the circles x2 + y2 =4 and (x-2)2+ y2 =1 respectively and let P and Q be their Points of intersection. The n the area of triangle C1PQ and C2PQ are in ration
a. 3:1
b. 5:1
c. 7:1
d. 9:1
Show Answer
A Straight line through the point of intersection of the lines x +2y =4 and 2x +y =4 meet the coordinates axes at A and B the locus of the midpoint of AB is
a. 3(x + y) =2xy
b. 2(x + y) =3xy
c. 2(x + y) =xy
d. (x y) =3xy
Show Answer
Let P and Q be the points on the parabola y2 =4x so that the line segment PQ subtends right angle at the vertex. If PQ intersects the axis of the parabola at R then the distance of the vertex from R is
a. 1
b. 2
c. 4
d. 6
Show Answer
The set {{a , b}} is called
a. Singleton set
b. Proper
c. Overlapping set
d. Improper set
Show Answer
The value of lim xà ∞ (n!)1/n/n is
a. 1
b. 1/e2
c. 1/2e
d. 1/e
Show Answer
The area of the region bounded by the curve y =x3 ,y =(1/x) x=2 is
a. 2 –log2
b. ¼ – log2
c. 3 –log2
d. 15/4 –log 2
Show Answer
Let f(x) =ax2 +bx +c, g(x) =px2 + qx +r such that f(1) =g(2),f(2) =g(2) and f(3) –g(3) =2.then f(4) – g(4) is
a. 4
b. 5
c. 6
d. 7
Show Answer
If the measuring scale has a least count of 10 kg then in 8000 kg the significant figures are
a. 4
b. 1
c. 3
d. 0
Show Answer
Which one of the following series are observed in the visible region of electromagnetic radiation
a. Lyman series
b. Balmer series
c. Bracket series
d. Pfunds series
Show Answer
The number 1678.9 should be written in scientific notation as a. 16.789 x 103
b. 1.6789 x 103
c. 1678.9 x 103
d. None
Show Answer
Which one of the following groups has quantities that do not have the same dimensions
a. Velocity, speed
b. Pressure, stress
c. Force, impulse
d. Work , energy
Show Answer
The %age errors in the measurement of mass and speed are 3% and 4% respectively. The maximum error in the measurement of K.E is
a. 11%
b. 10 5
c. 8%
d. 9%
Show Answer
The vector product of two vectors is zero, when
a. They are parallel to each other
b. They are equal vectors
c. They are perpendicular to each other
d. They are inclined at angle of 600
Show Answer
In right hand rule, the direction of the product vector will be
a. Along the thumb erect
b. Perpendicular to the erect thumb
c. Along the rotation of fingers
d. None
Show Answer
When an object slides at constant speed down an inclined plane, the coefficient of friction may be approximately be
a. sinӨ
b. cos Ө
c. tan Ө
d. cot Ө
Show Answer
Two forces 3N and 2N are at an angle Ө such that the resultant is R the first force is now increased to 6N and the resultant becomes 2R. the value of Ө is
a. 300
b. 600
c. 900
d. 1200
Show Answer
Torque acting on a body determines
a. Acceleration
b. Linear acceleration
c. Angular acceleration
d. Direction of motion of the body
Show Answer
If the velocity of a body is uniform the velocity –time graph is a straight line which is
a. Parallel to x axis
b. Parallel
c. At an angle of 450 with the x-axis
d. Along the y-axis
Show Answer
At what angle of projection the horizontal range of a projectile is max? a. 300
b. 450
c. 600
d. 900
Show Answer
What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th second of journey
a. 4: 5
b. 7:9
c. 16:25
d. 1:1
Show Answer
According to the postulates of the theory of relativity, a fourth dimension has been added to the three dimensions already associated with a Cartesian frame of reference. Which is the fourth dimension?
a. Space
b. Inertial frame of reference
c. Speed of light
d. Time
Show Answer
If the water fall from a dam to into a turbine wheel 19.6m below, then the velocity of water at the turbine is (Take g =9.8m/s2)
a. 9.8m/s
b. 19.6 m/s
c. 39.2 m/s
d. 98.0 m/s
Show Answer
The escape velocity of earth in Km/s a. 9.75
b. 11.2
c. 12.3
d. 15.6
Show Answer
Which is constant for a satellite in orbit?
a. Velocity
b. K.E
c. Angular momentum
d. P.E
Show Answer
How much water a pump of 2kw can raise in one minute to a height of 10 m, (Take g =10m/s2)
a. 1000 liters
b. 1200 liters
c. 100 liters
d. 2000 liters
Show Answer
The escape velocity from the earth’s surface is 11km/s. A certain planet has a radius twice that of the earth but its mean density is the same as that of the earth. The value of the escape velocity from this planet would be
a. 24km/s
b. 11km/s
c. 5.5km/s
d. 16.5km/s
Show Answer
If force and displacement of particle in the direction of force are doubled. work would be
a. Double
b. 4 times
c. Half
d. ¼ time
Show Answer
An electric motor is required to haul a cage of mass 400kg up a mineshaft through a vertical height of 1200m in 2 minutes. What will be the electrical power required if the overall efficiency is 80%
a. 3.2kw
b. 5kw
c. 32kw
d. 50kw
Show Answer
A couple produces
a. Purely linear motion
b. Purely rotational motion
c. Linear and rotational motion
d. No motion
Show Answer
The units of angular acceleration I s
a. Radian
b. Radian per second
c. Radian per second2
d. None
Show Answer
Once the space shuttle is in orbit at a radius R from earth’s center, what force does the seat exerts on the astronaut?
a. Mg
b. Zero newton
c. M/g
d. Ng/R2
Show Answer
In which case application of angular velocity is useful?
a. When body is rotating
b. When velocity of body is in a straight line
c. When velocity is in a straight line
d. None
Show Answer
If the area of a circle is equal to its circumference the radius of this circle is
a. 1
b. 2
c. 3
d. 4
Show Answer
Rotational K.E of a disc is
a. K.Erot =1/2 mv2
b. K.Erot =1/3 mv2
c. K.Erot =1/4 mv2
d. None
Show Answer
Which of these statements is not correct
a. Moment of inertia is independent of shape and size of the body
b. Moment of inertia depends on choice of axes
c. Momentum of inertia does not depend on the mass of body
d. None
Show Answer
A particle is moving in a vertical circle. The tensions the string when passing through two positions at angles 300 and 600 from vertical (lowest positions) are T1 and T2 respectively. Then
a. T1 = T2
b. T2 > T1
c. T1 > T2
d. Tension in the string always remains the same
Show Answer
At terminal velocity, fluid friction is
a. Maximum
b. Minimum
c. Zero
d. Decreasing
Show Answer
? = √2g(h1 − h2) ?ℎ??? ?ℎ?
a. Equation of continuity
b. Bernoulli’s theorem
c. Torricelli’s theorem
d. Equation for compressible fluids
Show Answer
With the increase of temperature viscosity
a. Increase
b. Decrease
c. Remain constant
d. Doubles
Show Answer
In case of streamed lined flow of liquid the loss of energy is
a. Maximum
b. Minimum
c. Infinite
d. Equal to what is in turbulent flow
Show Answer
A car engine is based on the principle of
a. Bernoulli’s equation
b. Ventura relation
c. Torricelli’s theorem
d. None
Show Answer
When a beam of light traveling in a rare medium is reflected from a denser medium it
a. Suffers no phase change
b. Undergoes a phase change of 1800
c. Undergoes a phase change of 2700
d. Undergoes a phase change of 900
Show Answer
Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is
a. ¼ times
b. 4 times
c. Twice
d. ½ of 8 cm diameter pipe
Show Answer
The density of water in F.P.S system is
a. 50lb/ft2
b. 50ft/lb
c. 50ft/lb3
d. 50lb/ft3
Show Answer
Total pressure on 1 m x 1 m gate immersed vertically at a depth of 2 m below the free water surface will be
a. 1000 kg
b. 2000kg
c. 4000kg
d. 8000 kg
Show Answer
The frequency of second pendulum is
a. 1 hertz
b. 2 hertz
c. 0.5 hertz
d. None
Show Answer
The type of motion in which an oscillating disturbance is transmitted from one position to the next without the actual rectilinear translation of the particles of the medium is called
a. Periodic motion
b. Rotatory motion
c. Wave motion
d. Rectilinear motion
Show Answer
A ball is just allowed to fall from the window of a moving train it will hit the ground following a
a. Circular path
b. Hyperbolic path
c. Straight line path
d. Parabolic path
Show Answer
Which one of the following is a simple harmonic motion?
a. Wave moving through a string fixed at both end
b. Earth spinning about its own axis
c. Ball bouncing between two rigid vertical walls
d. Particle moving in a circle with uniform speed.
Show Answer
A block weighting 40 kg extends a spring by 0.16m from its unscratched position. What is the value of k
a. 170 kg/s2
b. 245 kg/s2
c. 215 kg/s2
d. 201 kg/s2
Show Answer
A simple harmonic oscillator has a period T and energy E. the amplitude of the oscillator is doubled choose the correct answer
a. Period and energy get double
b. Period gets doubled while energy remain same
c. Energy gets doubled while Period remain same
d. Period remain same and Energy becomes 4 times
Show Answer
A particle performs simple harmonic motion of amplitude 0.020 m and frequency 2.5Hz. What is its max speed?
a. 0.008m/s
b. 0.050 m/s
c. 0.125 m/s
d. 0.314 m/s
Show Answer
Which if electromagnetic radiation has the longest wavelength?
a. γ rays
b. UV
c. Microwaves
d. X rays
Show Answer
The length of a spring is α when a force of 4 N is applied on it the length is β when 5 N forces is applied then the length of spring when 9N force is applied is
a. 5β – 4α
b. β – α
c. 5α -4β
d. 9(β – α)
Show Answer
Two springs of spring constant k1 and K2 are joined in series. The effective spring constant of combination is given by
a. (k1 +k2)/2
b. K1+ K2
c. K1k2/(k1 + k2)
d. √?1?2
Show Answer
The various features of wave phenomenon can be very conveniently studies by an apparatus called
a. Sonometer
b. Ripple tank
c. hydrometer
d. barometer
Show Answer
A highly directional beam of ultrasonic wave can be made to travel in water in
a. many meters
b. many kilometers
c. several kilometers
d. none
Show Answer
Applications of the result of scientific studies of sound in the designs of building etc. is called
a. Optics
b. Wave mechanics
c. Acoustics
d. Statics
Show Answer
Laplace formula is derived from
a. Isothermal; change
b. Adiabatic change
c. Isobaric change
d. Isochoric change
Show Answer
In the absence of an external torque the angular momentum of a rotating body is
a. Constant
b. Variable
c. Unstable
d. Zero
Show Answer
Progressive waves of frequency 300 Hz are superimposed to produce a system of stationary waves in which adjacent nodes are 1.5m apart. What is the speed of the progressive waves?
a. 100m/s
b. 200m/s
c. 450 m/s
d. 900 m/s
Show Answer
Which one of the following could be the frequency of ultraviolet radiation a. 1.0 x 106 Hz
b. 1.0 x 109 Hz
c. 1.0 x 1012 Hz
d. 1.0 x 1015Hz
Show Answer
To hear a clear echo, the reflecting surface must be at a minimum distance of
a. 10m
b. 16.5m
c. 33m
d. 66m
Show Answer
Which one is not a produced by sound wave in air
a. Polarization
b. Diffraction
c. Refraction
d. Reflection
Show Answer
The conduction due to charges produced by pair generation in a semi-conductor is called
a. Polarity
b. Intrinsic conduction
c. Electrostatic
d. Amplitude modulation
Show Answer
Ever point of a wave front may be considered as a
a. Source
b. Source of wave front
c. Source of secondary wave front
d. None
Show Answer
The phenomenon of polarization occurs only in which of the following wave type
a. Electromagnetic
b. Longitudinal
c. Mechanical waves
d. Matter waves
Show Answer
Spontaneous reaction is one
a. Directional, irreversible, real process
b. Unidirectional , reversible , imaginary reaction
c. Irreversible, Unidirectional, real process
d. Imaginary, reversible reaction
Show Answer
Which one of the following solution has the highest boiling point?
a. 0.1M BaCl2
b. 0.1M glucose
c. 0.1M urea
d. 0.1M NaCl
Show Answer
The pH of 0.005 molar solution of sulphuric acid is approximately: a. 0.010
b. 1
c. 2
d. 0.005
Show Answer
Given that heat of neutralization of strong acid and strong base as – 57.1 kg. The head produced when 0.25 mole of HCl is neutralized with 0.25 mole NaOH in aqueous solution is
a. 14.275kj
b. 57.1kj
c. 22.5kj
d. 28.6kj
e. All
Show Answer
Number of moles of NaOH present in 2L of 0.5 M NaOH is a. 1.5
b. 2.0
c. 1.0
d. 2.5
Show Answer
The molar solution of sulphuric acid is equal to
a. N/2 solution
b. N solution
c. 2N solution
d. 3N solution
Show Answer
Substances exist because they posses
a. Material
b. Molecular bonds
c. Volume
d. Heat
Show Answer
The equilibrium constant for a reaction A+2Bà 2C is 40. The equilibrium constant for reaction CàB +(1/2)A is
a. 40
b. [1/40]2
c. 1/40
d. 1/[40]1/2
Show Answer
In the reaction 2A +B à A2B, if the concentration of A is doubled and that of B is halved, then the rate of the reaction will :
a. Increase 2 times
b. Increase 4 times
c. Decrease 2 times
d. Remain same
Show Answer
Correct order among the following is
a. 1 erg> 1j > 1 call
b. 1 call > 1j > 1 erg
c. 1 erg >1 call >1j
d. 1j > 1 call > 1 erg
Show Answer
Which is the phenomenon who help us to calculate lattice energy of ionic crystals
a. Hess law
b. Enthalpy of formation
c. Born haber process
d. None
Show Answer
The volatile metal is
a. Fe
b. Zn
c. Cu
d. Ag
Show Answer
Gypsum on heating 1200 C -1300 C gives
a. Anhydrous salt
b. Hemihydrate
c. Monohydrate
d. Dehydrates
Show Answer
Substances exit because they posses
a. Material
b. Molecular bonds
c. Volume
d. Heat
Show Answer
O2,N2 are present in the ratio of 1:4 by weight the ratio of number of molecules is a. 7:32
b. 1:4
c. 2:1
d. 4:1
Show Answer
Chlorine upon reaction with NaOH in cold yields
a. NaCl,NaClO, H2O
b. NaCl,NaClO3, H2O
c. NaClO,NaClO3, H2O
d. NaCl , H2O
Show Answer
Farming’s salt is
a. NaCl
b. HF
c. KHF2
d. KClO3
Show Answer
Which of the following is least polarizable?
a. Ne
b. He
c. Xe
d. Kr
Show Answer
Transfer of heat from hot surrounding too cold refrigerator is an example of
a. Spontaneous reaction
b. Non spontaneous reaction
c. First law of thermodynamics
d. All of above
Show Answer
Alkaline KMnO4 converts ethylene into
a. Methanol
b. Ethanol
c. Ethane
d. Ethylene glycol
Show Answer
Which one of the following is not an isotope of hydrogen?
a. Deuterium
b. Tritium
c. Ortho hydrogen
d. None
Show Answer
Blue litmus turn s red in a solution of pH
a. Below 7
b. 7
c. Above 7
d. at all pH
Show Answer
maximum ionization potential is of
a. Ca
b. Na
c. Be
d. Mg
Show Answer
Strongest acid among the following is
Show Answer
Which molecule is planar?
a. SF4
b. XeF4
c. NF3
d. SiF4
Show Answer
A certain radioactive isotope has a half-life of 50 days. Fraction of the material left behind after 100days will be
a. 125%
b. 25%
c. 50%
d. 75%
Show Answer
The Rams speed at NTP of a gas can be calculated from the expression: a. √ 3? ( )
? b. √ 3?? ( )
c. √(3????)
d. All of these
Show Answer
Prussian blue is
a. K2Fe[Fe(CN)6]
b. K4[Fe(CN)6]
c. Fe4(Fe(CN)6)
d. K3(Fe(CN)6)
Show Answer
Following are fundamental ways of transferring energy
a. Pressure and work
b. Volume and pressure
c. Heat and work
d. Pressure and heat
Show Answer
A mixture of camphor and benzoic acid can be separated by
a. Fractional crystallization
b. Sublimation
c. Chemical method
d. Extraction with solvent
Show Answer
is a very difficult profession for a lazy person as you are.
a. That copper mining
b. It is copper mining
c. Although copper mining
d. Copper mining
Show Answer
She read
a. Several chapters in the library last night
b. Last night several chapters in the library
c. Last night in library several chapters
d. In the library several chapters last night
Show Answer
He is taking some this semester
a. Histories class
b. History classes
c. History class
d. None
Show Answer
The death
a. wages of sins are
b. Wage of sin are
c. Wages of sin is
d. Wage of sins are
Show Answer
Murtaza scored in his last entry test
a. The least points
b. A least points
c. The fewest points
d. The fewer points
Show Answer
Read the passage carefully and answer the following question given at the end of passage. Democratic societies from the earliest times have expected their governments to protect the weak against the strong. No ‘era of good feeling’ can justify discharging the police force or giving up the idea of public control over concentrated private wealth. On the other hand, it is obvious that a spirit of self- denial and moderation on the part of those who hold economic power will greatly soften the demand for absolute equality. Men are more interested in freedom and security than in an equal distribution of wealth. The extent to which government must interfere with business, therefore, is not exactly measured by the extent to which economic power is concentrated into a few hands. The required degree of government interference depends mainly on whether economic powers are oppressively used, and on the necessity of keeping economic factors in a tolerable state of balance. But with the necessity of meeting all these dangers and threats to liberty, the powers of government are unavoidably increased, whichever political party may be in office. The growth of government is a necessary result of the growth of technology and of the problems that go with the use of machines and science. Since the government in our nation, must take on more powers to meet its problems, there is no way to preserve freedom except by making democracy more powerful. The advent of science and technology has increased the
a. freedom of people
b. tyranny of political parties
c. powers of the government
d. chances of economic inequality
Show Answer
A spirit of moderation on the economically sound people would make the less privileged
a. unhappy with the rich people
b. more interested in freedom and security
c. unhappy with their lot
d. clamour less for absolute equality
Show Answer
The growth of government is necessitated to
a. make the rich and the poor happy
b. curb the accumulation of wealth in a few hands
c. monitor science and technology
d. deploy the police force wisely
Show Answer
‘Era of good feeling’ in the second sentence refers to
a. time of prosperity
b. time of adversity
c. time without government
d. time of police atrocities
Show Answer
‘Tolerable state of balance’ in the last sentence may mean
a. an adequate level of police force
b. a reasonable level of economic equality
c. a reasonable amount of government interference
d. a reasonable check on economic power
Show Answer
race : fatigue (analogy)
a. fasting : hunger
b. round :boxing
c. flower: colors
d. Hiking : gangrene
Show Answer
Strut : walking (analogy)
a. Sweating : wrestling
b. Hunter : fire
c. Speech : stage
d. Stammer : talk
Show Answer
Industries : hardworking (analogy)
a. Sky : blue
b. Muddy: unclear
c. Book :reading
d. Pond: lake
Show Answer
Scholar : ignorant (analogy)
a. Hardworking : lazy
b. Knife : sword
c. Courage : bold
d. Luxury : wealth
Show Answer
Cool : frozen:: (analogy)
a. Sharp :cut
b. Warm: hot
c. Hassock : stool
d. Freedom : liberty
Show Answer
a. Hypnotic
b. Honor
c. Encourage
d. scold
e. Prepare
Show Answer
Animosity (antonym)
a. Friendliness
b. Anxiety
c. Eagerness
d. Reliability
Show Answer
Portly (synonym)
a. Briskly
b. Vessel
c. Slender
d. Entirely
Show Answer
Impetuous (antonym)
a. Defensive
b. Ardent
c. Hobbyist
d. Wary
Show Answer
Valid (antonym)
a. Laud
b. Feeble
c. Due
d. Dump
Show Answer
An index that estimate true rate of exchange among the currencies is
a. Human development index
b. Exchange rate
c. Purchasing rate
d. None
Show Answer
LRR is stand for
a. Lahore ring road
b. Large ring road
c. Lahore ring road
d. Long ring road
Show Answer
Who is allegedly the current head of al-Qaida?
a. Khalid sheikh MOHAMMAD
b. Osama bin laden (late)
c. Ayman ul Zawahiri
d. None
Show Answer
Who is chancellor of Germany
a. Joachim Gauck
b. Angela Merkel
c. John Atta Mills
d. Laszlo Kover
Show Answer
Which of the following academies grants the noble prize in literature?
a. London academy
b. Norwegian academy
c. Swedish academy
d. New York academy
Show Answer
BCB stand for
a. Bhutan cricket board
b. Bangladesh cricket board
c. Belgium cricket board
d. None
Show Answer
Who was honored with highest cultural award of France the commander of the order on 17th July 2013
a. David bowie
b. Paul hewson
c. Bruce Willis
d. Bob Dylan
Show Answer
Identify the current hajj year a. 1432
b. 1433
c. 1434
d. 1435
Show Answer
Faf Du plessis is player of
a. Hockey
b. Cricket
c. Foot ball
d. Snooker
Show Answer
Easy jet is air line of
a. Uk
b. Malaysia
c. Spain
d. Turkey
Show Answer

Learn Anytime Anywhere


Download PLS Mobile App from Google Play Store

, , ,

Kindly share MCQs & Explanations Here

Ads Blocker Image Powered by Code Help Pro

Ads Blocker Detected!!!

We have detected that you are using extensions to block ads. Please support us by disabling these ads blocker.

error: Content is protected !!
Open chat
Can we help you?