hitechpathshala

Q. 1

The factor whichmeasure the deviationfromideal behavior of a gas are

collision frequency

collision diameter

compressibility factor

vanderWaal constant ‘a’

Q. 2

The basic theoryofArrhenius equationisthat:

The number of effective collisionsis proportional to the no. of molecules above a certain threshold energy.

Asthe temperature increases, the number ofmolecules with energies exceeding the threshold energyincreases.

The rate constant is a function oftemperature.

Activation energyand pre-exponentialfactors are alwaystemperature independent.

Q. 3

A

B

C

D

Q. 4

A

B

C

D

Q. 5

A

B

C

D

Q. 6

A

B

C

D

Q. 7

A

B

C

D

Q. 8

A

B

C

D

Q. 9

A

B

C

D

Q. 10

A

B

C

D

Q. 11

A

B

C

D

Q. 12

A

B

C

D

Q. 13

A

B

C

D

Q. 14

A

B

C

D

Q. 15

A

B

C

D

Q. 16

A

B

C

D

Q. 17

Schottkydefects with cation and anion pair vacancy.

Schottky defects with equal numbers of vacancies on the cationand anion sites.

Frenkeldefects with cation and anion pair interstitial defects.

Frenkeldefects with equal numbers ofintertitals on the cation and anion sites.

Q. 18

A

B

C

D

Q. 19

Which ofthe following statements are correct?

Halides of all alkalimetals and alkaline earth metals have rock saltstructure

Cesiumhalides and berylliumoxides have rock salt structure

Inzinc blende structure,sulphide ions are face centeredand zinc is presentinalternate tetrahedral voids

In FCC unit cell, void percentage = 26%

Q. 20

A

B

C

D

Q. 21

A

B

C

D

Q. 22

A

B

C

D

Q. 23

A

B

C

D

Q. 24

Which ofthe following is/are characteristics of hydrophilic solutions?

High concentration of dispersed phase canbe easily attained.

Coagulationisreversible

Viscosity and surface tension are nearlysame asthat of water

The charge ofthe particle depends onthe pH value ofthemedium; it maybe positive, negative or neutral.

Q. 25

Vant Hoff factor (i) for tetramerisation of a substance Ain water, assuming 80% degree of association is:

0.6

0.4

1.6

1.4

Q. 26

A

B

C

D

Q. 27

A

B

C

D

Q. 28

If radius ofsphere is 200 pmthen idealradius of triangular void is:

31 pm

45 pm

62 pm

90 pm

Q. 29

A

B

C

D

Q. 30

A

B

C

D

Q. 31

Order of reaction with respect to Aand B is:

1, 1

1, 2

2, 1

1, 0

Q. 32

A

B

C

D

Q. 33

Time required to decrease concentration ofAfrom 16 M to 1M is:

346.5 sec

639 sec

1386 sec

6930 sec

Q. 34

The pressure at Aand B in atmosphere are respectively :

0.821 & 1.642

1.642 & 0.821

1 & 2

0.082 & 0.164

Q. 35

The pressure at C is :

3.284 atm

1.642 atm

0.0821 atm

0.821 atm

Q. 36

isothermal

adiabatic

isobaric

isochoric

Q. 37

The work done in going form C to Ais :

zero

–1.15 kJ

–2.3 kJ

unpredictable

Q. 38

isoentropic process

reversible process

isochoric process

isobaric process

Q. 39

A

B

C

D

Q. 40

A

B

C

D

Q. 41

A

B

C

D

Q. 42

A

B

C

D

Q. 43

Final pH of the solution will be -

3

4.74

3.74

4.52

Q. 44

A

B

C

D

Q. 45

96

80

20

16

Q. 46

A

B

C

D

Q. 47

nodes

antinodes

orbitals

energy level

Q. 48

A

B

C

D

Q. 49

A

B

C

D

Q. 50

Which of the following option are correct?

It can be said that graphAis common for all types of reactions which are irreversible

for all chemical reactions, graphAcan be observed

It can be said that graphAis observed for only reversible reactions.

GraphAhas no significance.

PHYSICS 48 (FINAL SRPP)

Marks: 200