UET ECAT Mock Test 4 - PLS Academy

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ECAT Mock Test 4

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1 / 79

Category: Physics Ch 6 Class 11

If the radii of two droplets are in the ratio 2:3, what will be the ratio of their Terminal velocities?

2 : 3

4 : 6

4 : 9

2 : 6

2 / 79

Category: Physics Ch 14 Class 12

If length of solenoid gets doubled while keeping N (number of turns) constant, the resultant magnetic field will be?

B/2

B/4

B/3

3 / 79

Category: Physics Ch 14 Class 12

the value of permeability

4 / 79

Category: Chemistry Ch 8 Class 12

The general formula of Methane Dichloride is:

CH3Cl2

CH4Cl2

CH2Cl2

None of these

5 / 79

Category: Physics Ch 10 Class 11

Image of an object 5 mm high is only 1 cm high. Magnification produced by lens is

0.5

0.2

6 / 79

Category: Physics Ch 10 Class 11

Chromatic aberration can be removed by using

concave lens

combination of concave and convex lenses

two concave lenses

7 / 79

Category: English Analogies

Shield : Soldier

law Court

Helmet : Rider

Stethoscope : Doctor d)

Book : Rider

8 / 79

Category: English Analogies

Friendly : Inimical

Lithosphere : Hydrosphere

Condemnation : Approval

Abstain : Refrain d

Disappointment : Embarrassment

9 / 79

Category: Chemistry Ch 10 Class 11

Which one has valency other than one?

Mn in KMnO4

K in KCL

Br in Br2O

Na in NaCI

10 / 79

Category: Physics Ch 1 Class 11

Branch of physics which deals with sub atomic particles.

Atomic physics

Particle physics

Molecular physics

Nuclear physics

11 / 79

Category: Physics Ch 1 Class 11

Number of Significant figures in 0.001634 Is:

None

12 / 79

Category: Physics Ch 12 Class 12

Unit of electric field is:

N/C

Weber/sec

Volt/C

Joule/sec

13 / 79

Category: Physics Ch 12 Class 12

A proton Is moving in direction of negative x-axis, what will happen to it if potential difference of V = -10x + 7 is applied across the field.

Deflect upwards

Deflect downwards

Slow down

Speed up

14 / 79

Category: Physics Ch 12 Class 12

For a proton moving in the direction of the electric field

its potential energy increases and its electric potential decreases

its potential energy Increases and its electric potential Increases

its potential energy decreases and It electric potential Increases

its potential energy decreases and its electric potential decreases

15 / 79

Category: Physics Ch 7 Class 11

Seconds pendulum has time period

1 sec

2 sec

4 sec

0.5 sec

16 / 79

Category: Physics Ch 7 Class 11

If the spring is halved, the new spring constant of each part will be:

k/2

17 / 79

Category: Chemistry Ch 16 Class 12

Measuring ‘Biochemical Oxygen Demand’ (ROD) is a method used for:

Estimating the amount of organic matter in sewage water for determining quality

Measuring the activity of Saccharomyces cerevisiae in producing curd on a commercial scale.

Working out the efficiency of RBCs, about their capacity to carry oxygen.

Working out the efficiency of oil driven automobile engines.

18 / 79

Category: Chemistry Ch 16 Class 12

Treatment of water which is very effective in killing of pathogens is:

Aeration

Coagulation

Landfill

Chlorine usage

19 / 79

Category: Math Ch 4 Class 12

Let ?(?? , ??) not lying on the line ?: ?? + ?? + ? = ? then point P lies above if

?1? + ?1? + ?1 = 0

?1? + ?1? + ?1 ≠ 0

?1? + ?1? + ?1 < 0

?1? + ?1? + ?1 > 0

20 / 79

Category: Physics Ch 21 Class 12

Which of the following gives the correct expression of Decay Constant?

21 / 79

Category: Physics Ch 21 Class 12

In heavy nuclei the number of neutrons is than protons

Equal

Greater

lesser

Either a or c

22 / 79

Category: Physics Ch 4 Class 11

Value of solar constant on the surface of Earth is:

1 kWm^2

1.4 kWm^-2

1 kWm^-2

1.4 kWm^2

23 / 79

Category: Physics Ch 4 Class 11

A body of mass m moving with velocity v has a kinetic energy K. If its velocity is increased by 25%, what will be the work done in terms of K.E?

0.25 K

Zero

2.5 K

0.56 K

24 / 79

Category: English Spellings Correction

Choice Correct Spelling

Setellite

Satillite

Satellite

Satellete

25 / 79

Category: English Spellings Correction

Choice Correct Spelling

Grievances

Grevances

Grievences

Grievinces

26 / 79

Category: Chemistry Ch 11 Class 12

Higher order alcohols

Have more than 1 carbon

have more than 3 carbons

Have more than 2 carbons

Have more than 4 carbons

27 / 79

Category: Chemistry Ch 11 Class 12

Which of the following is not soluble In alcohol?

Resins and varnishes

Soaps and varnishes

Rubbers and plastics

Dyes and drug'

28 / 79

Category: English – Synonyms and Antonyms

Choose the word closest in meaning to “Hierarchical”

Bureaucracy

Stratified

Origin

Grain

29 / 79

Category: English – Synonyms and Antonyms

Choose the word closest In meaning to “Soggy”

parched

Dull

Sodden

Desiccated

30 / 79

Category: Chemistry Ch 5 Class 11

Spectrum of which series is in the visible region?

Lyman series

Balmer series

Paschen series

Pfund series

31 / 79

Category: Chemistry Ch 13 Class 12

Carboxylic acids can be prepared by action of and carbon dioxide

Sodium hydroxide

Grignard's reagent

Alcoholic KOH

Alkaline KMn0.

32 / 79

Category: Chemistry Ch 13 Class 12

Lysine is a
amino acid

Acidic

Basic

Neutral

Amphoteric

33 / 79

Category: Chemistry Ch 14 Class 12

) Plastic cannot be recycled by

Depolymerization

Transformation

Deformation

None of these

34 / 79

Category: Chemistry Ch 14 Class 12

Which of the following is a monosaccharide ?

Maltose

Sucrose

lactose

Fructose

35 / 79

Category: Math Ch 3 Class 12

∫ ?????? =

– ???? + ?

???? + ?

– ???? + ?

???? + c

36 / 79

Category: Chemistry Ch 2 Class 12

Which of the following is not true about caustic soda? a) It causes painful burns c) It is manufactured by Costner—Kellner process e) Both b and d

) It causes painful burns

It is manufactured by Costner—Kellner process

Both b and d

b) It has purgative smell

d) It is used os on anti-acid

37 / 79

Category: Physics Ch 18 Class 12

A type of metals containing alloys, ceramics etc., when heated their temperature reaches to a state called Transition temperature state and their resistance reaches to zero. These types of metals are called:

Conductors

Insulators

Semi-conductors

Superconductors

38 / 79

Category: Physics Ch 19 Class 12

The maximum Compton shift Is at

0 degrees

90 degrees

180 degrees

45 degrees

39 / 79

Category: Chemistry Ch 4 Class 12

Which of these is not an isotope of Phosphorus?

Red Phosphoru

Black Phosphorus

White Phosphorus

Gray Phosphorus

40 / 79

Category: Chemistry Ch 12 Class 12

Ketones and aldehydes are reduced in the presence of catalyst:

Al203

R-Mg-X

SOCl2

41 / 79

Category: Physics Ch 17 Class 12

Young modulus for the perfectly rigid body is

Infinity

42 / 79

Category: Math Ch 5 Class 12

The feasible solution which maximizes or minimizes the objective function is called

Exact solution

optimal solution

final solution

objective function

43 / 79

Category: Chemistry Ch 10 Class 12

Vithich of the following Alkyl Halide is least reactive?

RCl

RBr

44 / 79

Category: Chemistry Ch 8 Class 11

Buffer capacity depends upon

pOH

Remains same

Both a and b

45 / 79

Category: Math Ch 7 Class 12

The vector whose initial point is at the origin and terminal point is ? , is called

Null vector

unit vector

position vector

normal vector

46 / 79

Category: Math Ch 7 Class 12

47 / 79

Category: Math Ch 7 Class 12

48 / 79

Category: Physics Ch 9 Class 11

If the grating element is made 1/10th the resolving power will become

1/100 times

1/10 times

100 times

10 times

49 / 79

Category: Chemistry Ch 3 Class 12

Boric acid is used in

Washing wounds

Eye-wash

Detergents

Washing powder

50 / 79

Category: Chemistry Ch 3 Class 12

Orthoboric acid can NOT be obtained by which of the following?

Metaboricacid

Tetraboric acid

) Pyroboric acid

Boric anhydride

51 / 79

Category: Physics Ch 3 Class 11

When a body is falling under the action of gravity the direction of acceleration is:

Upwards

Downwards

Towards Left

Towards Right

52 / 79

Category: Physics Ch 3 Class 11

A ball is thrown from some height; it strikes the ground and bounces back to the same height. This scenario represents which situation:

Perfectly elastic

Elastic

Perfectly Inelastic

Inelastic

53 / 79

Category: Chemistry Ch 7 Class 12

Which of the following is an organic compound?

Explosives

Paper

Plastic

All of these

54 / 79

Category: English Grammar

Those who persist In the endeavor at long last triumph – the odds of life.

Over

Upon

About

55 / 79

Category: English Grammar

err is — to forgive divine

Inhuman

Natural

Beastly

human

56 / 79

Category: Physics Ch 8 Class 11

When the source moves towards an observer the frequency of waves as perceived by observer:

Increases

Decreases

Remains constant

None of these

57 / 79

Category: Chemistry Ch 5 Class 12

The order of decreasing power as an oxidizing agent is

F2> Br2> Cl2>I2

F2 > O2> Br2 > I2

F2 < O2 < Br2 < I2

F2 < Br2< C12 <I2

58 / 79

Category: Math Ch 14

All trigonometric functions are ……………….. functions.

Periodic

continues

injective

bijective

59 / 79

Category: Physics Ch 15 Class 12

A D.C generator is converted in A.C generator by

Increasing the rings

Replacing split rings by slip rings

none

Decreasing the rings

60 / 79

Category: Chemistry Ch 6 Class 11

Dipole moment of H2 is:

1.03

) 1.45

0.78

61 / 79

Category: Chemistry Ch 6 Class 11

Co-ordinate covalent bond Is not formed in which of the following

PH3

NH3

CH4

None of these

62 / 79

Category: Chemistry Ch 6 Class 11

How many orbitals intermix in sp hybridization?

63 / 79

Category: Physics Ch 20 Class 12

Laser light is

Monochromatic

Intense

Coherent

All of these

64 / 79

Category: Chemistry Ch 6 Class 12

Which of the following states of copper Is more stable?

Cu+2

Cu+1

Both a and b

Depends on environment

65 / 79

Category: Chemistry Ch 6 Class 12

ransition elements are colored because of:

d-d transition

d-p transition

p-p transition

s-d transition

66 / 79

Category: English Reading Comprehension

Passage 7 Dear Melissa, I hope you are well. Guess what) I am having a big party next week at my house and I am inviting all my close friends. The theme of the party is going to be Harry Potter, so all must dress accordingly. You would make a great witchl I need to let everyone know by Wednesday since I am throwing the party next Saturday. Sam is going to decorate the house and my mother is going to bake a cake and making lots of food. There Is going to be music and dancing as well. John is going to be the DJ. You can stay over at my house. It’s going to be great! I hope to see you then.

What kind of an organization Is it?

a) it is a slumber party

b) It is a costume party

c) It is about making cake

d) It is a dance party

67 / 79

Category: Math Ch 6 Class 12

The chord containing the centre of the circle is

Radius of circle

Diameter of circle

Area of circle

Tangent of circle

68 / 79

Category: Math Ch 6 Class 12

Which one is related to circle

? = 1

? > 1

? < 1

? = 0

69 / 79

Category: English

Q.194 One of the students said professor is late today.”

A. A

B. An

C. The

D. no article

70 / 79

Category: Physics Ch 5 Class 11

Js is the unit of:

linear momentum

Angular momentum

Energy

Mass

71 / 79

Category: Physics Ch 5 Class 11

Moment of inertia in angular motion plays the same role as

Mass in linear motion

Acceleration in linear motion

Rest mass

None of these

72 / 79

Category: Chemistry

Hydration energy of sodium Ion Is:

321 Kj/mol

406 Kj/mol

1032 kJ/mil

940 Kj/mol

73 / 79

Category: Chemistry Ch 9 Class 11

Which one is the correct formula for molar mass of solute In case of boiling point elevation? x

M2= 1000 Kb W2M1/ Tb W1

) M2= 1000 Kb W2/ Tb

M2 = Kb W1 Tb/1000

M2 =1000 Tb W21 Kb

74 / 79

Category: Physics

Center of gravity of a cup Iles

At the handle of cup

In space Inside the cup

Outside cup d)

On the surface of cup

75 / 79

Category: Chemistry Ch 4 Class 11

Molecular solids are different from others because they

Are formed by only non-polar molecules

Have low melting point

Have high conductivity

Have high density

76 / 79

Category: Chemistry Ch 4 Class 11

Which of the following compound has the highest boiling point?

Water

HCL

Ammonia

77 / 79

Category: Physics Ch 2 Class 11

(1, 1, 1) • (2, 2, 2) =

78 / 79

Category: Physics Ch 2 Class 11

Three books A, 8, C are place on each other with A on top, B in mid and C at bottom. If weight of A is 2N, B is 5N and that of C is 4N, what is the total force being exerted on book B?

11N

5 N

7 N

6 N

79 / 79

Category: Chemistry Ch 1 Class 12

Whidi group has coinage metals?

IIB

IIIA

Your score is

The average score is 47%

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