Chemistry - Questions and Answers, General Study (GK)

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531.

If a system A is in thermal equilibrium with B and B is in thermal equilibrium with C, then A and C are in equilibrium with each other. "This is a statement of"

(a)Cyclic rule

(b)Zeroth law of thermodynamics

(c)First law of thermodynamics

(d)Second law of thermodynamics

Comment

Answer is: B

532.

An Intensive property in Thermodynamics means a property which depends

(a)On the amount of the substance only

(b)On the nature of the substance only

(c)Both on the amount as well as nature of the substance

(d)Neither on the amount nor on the nature

Comment

Answer is: B

533.

In an adiabatic compression, the decrease in volume is associated with

(a)Increase in temperature and decrease in pressure

(b)Decrease in temperature and increase in pressure

(c)Decrease in temperature and decrease in pressure

(d)Increase in temperature and increase in pressure

Comment

Answer is: D

534.

The order of appearance of the following with increasing temperature during the refining of crude oil is

(a)Gasoline, Diesel, Kerosene

(b)Gasoline, Kerosene, Diesel

(c)Diesel, Gasoline, Kerosene

(d)Kerosene, Gasoline, Diesel

Comment

Answer is: B

535.

If a reaction is carried out at constant pressure, which of the following statement is correct.

(a)The reaction is likely to be endothermic

(b)The heat change is equal to the enthalpy change

(c)The reaction is likely to be exothermic

(d)The heat change is equal to the change in temperature

Comment

Answer is: B

536.

Consider the following statements
1. Water and ethnol have unusually large entropies of vaporisation.
2. The compound with negative heat of formation is known as exothermic compound.
Which is/are correct?

(a)Only 1

(b)Only 2

(d)None of the above

Comment

Answer is: C

537.

In a hydrogen oxygen fuel cell combustion of hydrogen occurs to

(a)Generate heat

(b)Create potential difference between the two electrode

(c)Produce high purity water

(d)Remove adsorbed oxygen from electrode surfaces.

Comment

Answer is: B

538.

A smuggler course not carry gold by depositing Iron all gold surface, because

(a)Gold has lower standard reduction potential than iron

(b)Gold has higher standard reduction potential than iron

(c)Iron rusts

(d)Gold in denser

Comment

Answer is: B

539.

Consider the following statements regarding a motor car battery
1. The voltage is usually 12 V.
2. Electrolyte used is hydraulic acid.
3. Electrodes are lead and copper.
4. Capacity is expressed in ampere hour.
Which of the above statement are correct?

(a)1 and 2

(b)2 and 3

(d)1 and 4

Comment

Answer is: D

540.

Which of the following statement about the commonly used automobile battery are true?
1. It is usually a lead acid battery.
2. It has six cells with a potential of 2V each.
3. Its cells work as Galvanic cells while discharging power.
4. Its sales work at electrolytic cells while recharging.
Select the correct answer.

Chemistry - Questions and AnswersPage 54

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