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Physical Chemistry

Description: This Question Paper contain direct questions to clarify the basic concepts just to revise the chapter. It is meant for the bigners
Number of Questions: 27
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Tags: Physical Chemistry Chemistry Chemistry Question Paper The Solid State
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The catalyst used in contact process is :-

This Question Paper involve the mixed questions on different chapters of physical chemistry. If you have read them thoroughly then make an attempt to solve it. It will definitely help you to revise your basic concepts.

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  1. vanadium pentoxide.

  2. iron.

  3. nickel.

  4. platinized asbestos.


Correct Option: A
Explanation:

ANS 1.

Which of the following is an example of group 12 - 16 compound?

This Question Paper involve the mixed questions on different chapters of physical chemistry. If you have read them thoroughly then make an attempt to solve it. It will definitely help you to revise your basic concepts.

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  1. InSb.

  2. HgTe.

  3. TiO.

  4. VO.


Correct Option: B
Explanation:

ANS 2.

The unit of rate constant of a first order reaction is :-

This Question Paper involve the mixed questions on different chapters of physical chemistry. If you have read them thoroughly then make an attempt to solve it. It will definitely help you to revise your basic concepts.

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  1. mol per litre.

  2. per second.

  3. mol per litre per second.

  4. per mol litre per second.


Correct Option: B
Explanation:

ANS 2.

In p-type semiconductor, silicon and germanium are doped with

This Question Paper involve the mixed questions on different chapters of physical chemistry. If you have read them thoroughly then make an attempt to solve it. It will definitely help you to revise your basic concepts.

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  1. Te or Al.

  2. P or As.

  3. Se or Te.

  4. Al or Ga.


Correct Option: A
Explanation:

ANS 4.

Which of the following has conductivity like metallic copper?

This Question Paper involve the mixed questions on different chapters of physical chemistry. If you have read them thoroughly then make an attempt to solve it. It will definitely help you to revise your basic concepts.

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  1. Zink sulphite.

  2. Rhenium oxide.

  3. Vanadium oxide.

  4. Cadmium selenide.


Correct Option: B
Explanation:

ANS 2.

Which of the following is a polar solvent?

This Question Paper involve the mixed questions on different chapters of physical chemistry. If you have read them thoroughly then make an attempt to solve it. It will definitely help you to revise your basic concepts.

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  1. Carbon tetrachloride.

  2. Carbon disulphide.

  3. Alcohol.

  4. Benzene.


Correct Option: C
Explanation:

ANS 3.

The order of a reaction can never be _______ the stoichiometric cofficients

This Question Paper involve the mixed questions on different chapters of physical chemistry. If you have read them thoroughly then make an attempt to solve it. It will definitely help you to revise your basic concepts.

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  1. equal to

  2. greater than or equal to

  3. less than or equal to

  4. greater than


Correct Option: A
Explanation:

ANS 1.

The unit of rate constant of a first order reaction is :-

This Question Paper involve the mixed questions on different chapters of physical chemistry. If you have read them thoroughly then make an attempt to solve it. It will definitely help you to revise your basic concepts.

Thanks.

  1. mol per litre.

  2. per second.

  3. mol per litre per second.

  4. per mol litre per second.


Correct Option: B
Explanation:

ANS 2.

The catalyst used in Haber's process is :-

This Question Paper involve the mixed questions on different chapters of physical chemistry. If you have read them thoroughly then make an attempt to solve it. It will definitely help you to revise your basic concepts.

Thanks.

  1. iron

  2. venadium pentoxide

  3. platinized asbestos

  4. nickel


Correct Option: A
Explanation:

ANS 1.

In n-type semiconductor, silicon and germanium are doped with

  1. Group 13 elements

  2. Group 14 elements

  3. Group 15 elements

  4. Group 16 elements


Correct Option: C
Explanation:

ANS 3.

Which of the following has conductivity like metallic copper?

  1. Zink sulphite.

  2. Rhenium oxide.

  3. Vanadium oxide.

  4. Cadmium selenide.


Correct Option: B
Explanation:

ANS 2.

Conductivity of semiconductors

  1. decreases with temperature

  2. increases with temperature

  3. remains constant with temperature

  4. increases and decreases randomly with temperature


Correct Option: B
Explanation:

ANS 2.

If a molecule forms c.c .p, the number of octahedral voids in 3 moles of it is equal to

  1. 4 X Avogadro number.

  2. 3 X Avogadro number

  3. 2 X Avogadro number.

  4. 1X Avogadro number


Correct Option: B
Explanation:

ANS 1.

If a molecule forms h.c.p, the number of tetrahedral voids in 0.2 moles of it is equal to

  1. 2 X Avogadro number

  2. 0.2 X Avogadro number

  3. 0.2 X 2 X Avogadro number

  4. 0.2 X 0.2 X Avogadro number


Correct Option: C
Explanation:

ANS 3.

The solid in which metal deficiency defect occurs is :-

  1. NaCl

  2. VO

  3. MgO

  4. FeO.


Correct Option: D
Explanation:

ANS 4.

The process of adding a suitable impurity to a semiconductor is called

  1. doping

  2. electroplating

  3. alloying

  4. amalgamation


Correct Option: A
Explanation:

ANS 1.

Find mole fraction of 20% by weight NaOH solution.

  1. 0.10

  2. 0.20

  3. 0.50

  4. 0.80


Correct Option: C
Explanation:

ANS 3.

Isotonic solutions have the same

  1. volume and molecular concentration

  2. pressure and molecular concentration

  3. temperature and volume

  4. pressure and temperature


Correct Option: B
Explanation:

ANS 2.

When a solution of a volatile solvent and non-volatile solute is in equillibrium with the vapours, the vapour phase will be rich in

  1. solute

  2. solvent

  3. atmospheric nitrogen

  4. water vapours


Correct Option: B
Explanation:

ANS 2.

Which of the following gases has rotten egg smell?

  1. Hydrogen sulphide

  2. Hydrogen chloride

  3. Sulphur dioxide

  4. Sulphur trioxide


Correct Option: A
Explanation:

ANS 1.

Which of the following is not a unit of pressure?

  1. Pascal

  2. Atmosphere

  3. Bar

  4. Hertz


Correct Option: D
Explanation:

ANS 4.

In negative deviation from Rault's law:

  1. A-A interactions = B-B interactions = A-B interactions.

  2. A-A interactions = B-B interactions # A-B interactions.

  3. A-B interactions are more than that of A-A and B-B.

  4. A-B interactions are less than A-A and B-B.


Correct Option: C
Explanation:

ANS 3.

Why is the soda water bottles sealed at high pressure?

  1. To make the cork tight

  2. To decrease the temperature

  3. To increase the solubility of carbon dioxide

  4. To mix the liquids properly


Correct Option: C
Explanation:

ANS 3.

What is the possible value of order of the reaction ?

  1. 3/4

  2. -3

  3. 50

  4. Square root of 2.


Correct Option: A
Explanation:

ANS 1.

A zero order reaction means

  1. the rate of reaction is independent of the concentration of reactants

  2. the rate of reaction is independent of the concentration of the products

  3. the rate of reaction is independent of the concentration of reactants and products

  4. the rate the reaction is equal to the concentration of products divided by that of the reactants


Correct Option: A
Explanation:

ANS 1.

Which of the following is a strong electrolyte?

  1. Ethyl alcohol.

  2. Acetic acid.

  3. Benzoic acid.

  4. Sodium chloride.


Correct Option: D
Explanation:

ANS 4.

When hydrogen gas is taken in a closed vessel containing charcoal:

  1. pressure of the gas increases.

  2. pressure of the gas decreases.

  3. volume of the gas increases.

  4. volume of the gas decreases.


Correct Option: B
Explanation:

ANS 2.

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