PIEAS Mock Test 5 - PLS Academy

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PIEAS

PIEAS Mock Test 5

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1 / 80

Category: Chemistry Ch 12 Class 12

Simplest aromatic aldehyde has number of hydrogen atoms.

2 / 80

Category: Physics Ch 11 Class 11

If speed of a fan in a room is Increased then the temperature of air in the room will

Decrease

Increase

Remain Same

Either a or b

3 / 80

Category: Math Ch 5 Class 12

Corner point is also called

Origin

Focus

Vertex

Test point

4 / 80

Category: Math Ch 5 Class 12

(0,0) is satisfied by

? − ? < 10

2? + 5? > 10

? − ? ≥ 13

None

5 / 80

Category: Physics Ch 17 Class 12

If stress is doubled, then volume becomes

Double

Half

Four times

None of these

6 / 80

Category: Math Ch 3 Class 12

The order of the differential equation : ????/??? +??/?? − ? = ?

more than 2

7 / 80

Category: Chemistry Ch 10 Class 12

When Grignard reagent react with water they give as a product

Ether

Amine

Alkane

Alcohol

8 / 80

Category: Chemistry Ch 10 Class 12

Alcbhols react with aqueous acid to produce alkyl halides in presence of

ZnCl2

SO2

Pyridine

KOH

9 / 80

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

10 / 80

Category: Chemistry Ch 11 Class 12

Which of the following are not usually named using IUPAC system?

Alkenes

Alkalies

Ether

Alcohols

11 / 80

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

12 / 80

Category: Chemistry Ch 10 Class 11

Oxidation number of Cr in K2Cr2O2 & K2Cr2O4 is:

+6, +3

+5, +2

7 +3

6 +4

13 / 80

Category: Chemistry Ch 10 Class 11

Both a and c What is the oxidation number of S in SO2^(-2)?

— 6

14 / 80

Category: Physics Ch 19 Class 12

Name the scientist who won the noble prize for discovery of energy quanta

Maxwell

Newton

Plank

Einstein

15 / 80

Category: Physics Ch 19 Class 12

The stopping potential depends on

Intensity of incident light

Frequency of Incident light

Both a and b

None of these

16 / 80

Category: Physics Ch 19 Class 12

If Compton shift is half of Compton wavelength, then the scattering angle would be:

120

17 / 80

Category: Math Ch 2 Class 12

A point where 1st derivative of function is zero , is called

Stationary point

corner point

point of concurrency

common point

18 / 80

Category: Math Ch 2 Class 12

19 / 80

Category: Physics Ch 5 Class 11

1 degree Is equal to radians

180

3.14

0.01745

20 / 80

Category: Physics Ch 13 Class 12

If a magnetic field around a current carrying wire is anticlockwise then the direction of current flow is a

Upwards

Downward

Rightward

Leftward

21 / 80

Category: Physics Ch 13 Class 12

If length of a wire is Increased two times and Its cross-sectional area is reduced to half, the resistance of the wire will be:

0.5 R

0.25 R

22 / 80

Category: English

Q.199 The students were a waiting for the arrival of the chief guest.

A. The students were

B. A waiting for

C. The arrival of

D. The chief guest.

23 / 80

Category: English

Q.186. Chatteris fell ill during the winter of 17 and Chips became Acting Head of Brookfield

A.fell

B.17

C.became

D.acting head

24 / 80

Category: English

Q.196 Choose the correct synonyms of Yearning

A) yawning

B) enduring

C) longing

D) prolonging

25 / 80

Category: English

Q.181.Choose the Correct sentence

A) He worked a lot last year, and he could not get what he wanted.

B) He worked a lot last year, and he could not get what he wanted.

C) He worked a lot last year. He could not got what he wanted.

D) He worked a lot last year, as he could not get what he wanted

26 / 80

Category: English

Q.200 If mountains are.______________ of trees, rains will soon wash the fertile topsoil down the slope to end as useless silt below.

A. Deforested

B. Afforested

B. Stripped

D. Shortage

27 / 80

Category: Physics Ch 9 Class 11

When light enters from air to glass remains constant?

Frequency

Wavelength

Velocity

All of these

28 / 80

Category: Chemistry Ch 7 Class 12

Wohler prepared urea from:

Bakelite

Cyanic acid

NH4CNO

Formaldehyde

29 / 80

Category: English Spellings Correction

Choice Correct Spelling

Extravagant

Axtravagant

Extravegant

Extravigant

30 / 80

Category: English Spellings Correction

Choice Correct Spelling

Severely

Siverely

Saverely

Soverely

31 / 80

Category: English Spellings Correction

Choice Correct Spelling

Disciple

Desciple

Diseiple

Discipile

32 / 80

Category: English Spellings Correction

Choice Correct Spelling

Baundary

Boundary

Bondary

Boundery

33 / 80

Category: Physics Ch 14 Class 12

Ammeter Is a galvanometer with:

High resistance in series

Low resistance in series

High resistance in parallel

Low resistance in parallel

34 / 80

Category: Physics Ch 14 Class 12

What are dimensions of Magnetic Flux

35 / 80

Category: Chemistry Ch 9 Class 11

Definition of Raoult’s law is,

The lowering of vapor pressure is equal to the mole fraction of solute

The relative lowering of vapor pressure is directly proportional to the mole fraction of solute.

The relative lowering of vapor pressure is equal to the mole fraction of solute

The relative lowering vapor pressure is equal to the mole fraction of solvent

36 / 80

Category: Chemistry

Hydration energy of sodium Ion Is:

321 Kj/mol

406 Kj/mol

1032 kJ/mil

940 Kj/mol

37 / 80

Category: Chemistry

Vinyl bromide can be prepared from:

Hydroxyl bromide

Ethylene dibromide

Vicinal brornida

All of these

38 / 80

Category: English Analogies

Fox : Cunning a)

Cat : Playful

) Horse : Runner

Vixen : Cute

Ant : Industrious

39 / 80

Category: English Analogies

Dusk : Night

Afternoon : Evening

Infant : Child

Walk : Run

Day : Light

40 / 80

Category: English Analogies

Necessity : Invention

Curiosity : Knowledge

Price : Commodity

Nation : Citizens

Language : Conversation

41 / 80

Category: Math Ch 7 Class 12

42 / 80

Category: Math Ch 7 Class 12

. If the dot product of two vectors is zero, then the vectors must be

Parallel

orthogonal

reciprocal

equal

43 / 80

Category: Math Ch 7 Class 12

If any two vectors of scalar triple product are equal, then its value is equal to

-1

44 / 80

Category: Math Ch 7 Class 12

Cross product or vector product is defined

In plane only

in space only

everywhere

in vector field

45 / 80

Category: Physics Ch 21 Class 12

Disintegration of a radioactive element is

Periodic

Dependent on its atomic number

Random

None of these

46 / 80

Category: Physics Ch 21 Class 12

Radiation cause damage in a)

Cell

Skin

Hair

All of above

47 / 80

Category: Physics Ch 21 Class 12

If half-life of an element Is 4 minutes, then 3/4′ of It Is decayed in:

6 min

4 min

8 min

10 min

48 / 80

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

49 / 80

Category: Physics Ch 8 Class 11

The frequency of a wave as the source approaches the observer with speed v

Increases

First increases then decreases

Decreases

Remains same

50 / 80

Category: Chemistry Ch 8 Class 11

If the value of Kc is large than the ratio (products)/(reactants), the reaction:

Is at equilibrium

Is not at equilibrium

The reaction moves in the forward direction

The direction will move in the reverse direction

51 / 80

Category: Chemistry Ch 15 Class 12

Ammonium nitrate contain nitrogen

52 / 80

Category: Physics Ch 10 Class 11

In multimode step index fibre the refractive index of core and cladding is

Same

Different

Zero

Different with refractive index of core higher than cladding

53 / 80

Category: Physics Ch 10 Class 11

In going form a denser to rarer medium a array of light is

undeviated

bent away form the normal

bent towards the normal

polarized

54 / 80

Category: Physics Ch 10 Class 11

Spherical aberration can be reduced by using

double convex lens

central portion of the lens

edge portion of the lens

parallel rays

55 / 80

Category: Chemistry Ch 8 Class 12

Sp hybridization is found In which of the following?

Ethane

Ethene

Ethyne

None

56 / 80

Category: Physics Ch 4 Class 11

What is the unit of Power

Watt

Ampere

Newton

Joules

57 / 80

Category: Physics Ch 4 Class 11

If a force of 1 N acts on a body through a distance of 1 m in the direction of force, how much
work is done?

1 J

– 1 J

0 J

Either a or b

58 / 80

Category: Physics Ch 4 Class 11

ML^2T^-3 is the dimension of:

Power

Work

Momentum

Force

59 / 80

Category: Chemistry Ch 9 Class 12

The reaction of benzene with bromine gives?

Allkyl bromide

Hydrogen bromide

Bromo-phenol

Bromo cyclohexane

60 / 80

Category: Chemistry Ch 14 Class 12

61 / 80

Category: Chemistry Ch 14 Class 12

Which of the following is a monosaccharide ?

Maltose

Sucrose

lactose

Fructose

62 / 80

Category: Physics Ch 12 Class 12

Flux passing through an area does not depend upon

Medium

Shape of hypothetical surface

Numbers of line passing through the area

None of these

63 / 80

Category: Physics Ch 12 Class 12

A charge is situated in the center of cube. The electric flux through one of the faces of the cube is.

Q/Eo

Q/2Eo

Q/4Eo

Ct/6Eo

64 / 80

Category: Physics Ch 12 Class 12

If capacitor is connected with battery and is fully charged then

Current will flow

Current will not flow

Depends on the dielectric

May or may not flow

65 / 80

Category: Chemistry Ch 16 Class 12

NO2 in atmosphere absorbs moisture to form?

HNO3

HNO2

Both a and b

66 / 80

Category: Physics Ch 7 Class 11

Time period of simple pendulum depends on

Mass

Length of the pendulum

Acceleration due to gravity g

Both b and c

67 / 80

Category: Physics Ch 7 Class 11

According to the hook’s law, strain is directly proportional to stress

True

False

None of these

May or may not

68 / 80

Category: Physics Ch 6 Class 11

terminal velocity of a water droplet is dependent on:

Mass

Radius

Both a and b

None

69 / 80

Category: English – Synonyms and Antonyms

Choose the word closest In meaning to “Robust”

Wealthy

Stout

Limp

Assiduous

70 / 80

Category: English – Synonyms and Antonyms

Choose the word most opposite in meaning to “Incomparable”

Unique

Rival

Attire

Routine

71 / 80

Category: English – Synonyms and Antonyms

Choose the word closest In meaning to “Nadir”

Bottom

Pinnacle

Apex

Root

72 / 80

Category: English – Synonyms and Antonyms

Choose the word closest in meaning to “Pursue”

Aid

Quit

Hunt

Shun

73 / 80

Category: English Grammar

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

Over

Upon

About

74 / 80

Category: English Grammar

The miser gazed — at the pile of gold coins in front of him.

Avidly

Admiringly

Thoughtfully

Earnest

75 / 80

Category: Physics Ch 15 Class 12

Which electrical quantity cannot be changed by a transformer?

Voltage

Current

Power

Inductance

76 / 80

Category: Chemistry Ch 13 Class 12

To get the carboxylic acid containing C atoms less than C atoms in parent aldehyde we do hydrolysis of:

Cyanohydrins

Amino Acids

Esters

Amides

77 / 80

Category: Chemistry Ch 13 Class 12

Amino acids are prepared by?

Suckers synthesis

Dow's method

h) Williamson's synthesis

Sabatier-Sendern's synthesis

78 / 80

Category: English Reading Comprehension

Passage 10 Hi, my name’s Andriy. I love football, I am a great fan of AC Milan. I have also been interested in cars since I was a child. I’m crazy about driving and I also enjoy fixing cars. When I was ten, I had many toy cars. I would play with them, repair the ones my friends broke. I also used to help my dad fix his car. So, eventually I decided to become a mechanic and open up my own shop. My parents are happy with my choice, too. They think it’s important that I pursue a carrier that I like. I have a bright career now and I really enjoy it. I’m planning to get married soon. My girlfriend is also interested in cars. Who knows, maybe we can run the car shop together with our kids in the future. Andriy has been interested In cars since

a) 2007

b) He was born

c) His started driving

d) Very young age

79 / 80

Category: English Reading Comprehension

Passage 5 One of my favorite vacation places is Mexico. I really like the weather there because it never gets cold. The people are very nice too. They never laugh at my bad Spanish. The food is really good. Mexico City is a very interesting place to visit. It has some great museums and lots of fascinating old buildings. The hotels arc too expensive to stay but there are more affordable options. For example, you can stay at one of the beach resorts like Acapulco. If you are planning to visit Mexico, you should definitely see the Mayan temples near Merida.

What can you conclude from the paragraph?

a) Hotels are very cheap in Mexico

b) The hotels aren't comfortable there

c) Hotels are all poor In Mexico

d) The hotels in Mexico are pretty expensive

80 / 80

Category: Physics Ch 16 Class 12

Reactance of an Inductor Is given by:

1/wL

1/wC

Your score is

The average score is 46%

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