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Inorganic Chemistry

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Liquation method is based on the principle of

  1. difference in magnetic properties

  2. difference in density

  3. difference in melting point

  4. difference in boiling point


Correct Option: C
Explanation:

Ans : 3.

The Ellingham diagram cannot tell

  1. about the speed of reaction

  2. about the feasibility of a reaction

  3. about which substance is a better reducing agent

  4. about the thermodynamic concept of a reaction


Correct Option: A
Explanation:

Ans : 1.

Mond's process is used for the refining of

  1. nickel

  2. cobalt

  3. copper

  4. iron


Correct Option: A
Explanation:

Ans ; 1.

Chromatography is based on the principle of

  1. difference in density

  2. difference in absorption

  3. difference in mass

  4. difference in adsorption


Correct Option: D
Explanation:

Chromatography is based on the principle of difference in adsorption.

The reduction of metal oxide is easy when the metal formed is liquid because

  1. of decrsase in enthalpy

  2. of decrease in entropy

  3. of increase in enthalpy

  4. of increase in entropy


Correct Option: D
Explanation:

Ans : 4.

The potential difference between the fixed layer and the diffused layer of opposite charges is called

  1. electrode potential

  2. e.m.f.

  3. zeta potential

  4. reduction potential


Correct Option: C
Explanation:

Ans : 3.

The process of conversion of precipitates into the colloidal solution is called

  1. dialysis

  2. dissolution

  3. peptization

  4. electrophoresis


Correct Option: C
Explanation:

Ans : 3.

To speed up the process of ultrafiltration

  1. high temperature is required

  2. pressure or suction is applied

  3. high temperature and high pressure is applied

  4. more volume has to be taken


Correct Option: B
Explanation:

Ans : 2.

Which of the following does not show tyndall effect?

  1. Colloidal solution

  2. True solution

  3. Suspension

  4. None of the above


Correct Option: B
Explanation:

Ans : 2.

An Isochore is a graph which is plotted at

  1. constant pressure

  2. constant temperature

  3. constant volume

  4. not any constant parameter


Correct Option: C
Explanation:

Ans : 3.

The copper matte contains

  1. cuprous oxide and iron oxide

  2. Cu and Fe

  3. copper sulphide and iron sulphide

  4. copper sulphide and zink sulphide


Correct Option: C
Explanation:

Ans : 3.

Entropy means

  1. disorder

  2. heat

  3. free energy

  4. enthalpy


Correct Option: A
Explanation:

Ans : 1.

Free energy charge is

  1. inversely related to rate constant

  2. directly related to rate constant

  3. directly related to negative value of rate constant

  4. directly related to minus log of rate constant


Correct Option: D
Explanation:

Ans : 4.

In Van Arkel method, the following impurities are removed

  1. oxygen and sulphur

  2. oxygen and nitrogen

  3. sulphur and chlorine

  4. Zr and Ti


Correct Option: D
Explanation:

Ans : 4.

In Ellingham diagram, the temperature range for the feasibility of a reaction is indicated by

  1. the increase in slope of the curve

  2. the decrease in slope of the curve

  3. the point of intersection of the curves

  4. x-axis of the curve


Correct Option: C
Explanation:

Ans : 3.

In Van Arkel method, the metal is heated with

  1. bromine

  2. chlorine

  3. carbon

  4. iodine


Correct Option: D
Explanation:

Ans : 4.

In the process of extraction of gold and silver, the reducing agent used is

  1. cyano compound

  2. zinc

  3. CO

  4. C


Correct Option: B
Explanation:

Ans : 2.

What is the process of reduction of alumina using carbon called?

  1. Mond's process

  2. Van Arkel method

  3. Hydrometallurgy

  4. Hall-Heroult process


Correct Option: D
Explanation:

Ans : 4.

Refining is the method of

  1. purification of ore

  2. purification of metal

  3. reduction of metal oxide

  4. conversion of sulphide into oxide


Correct Option: B
Explanation:

Ans : 2.

Magnesium metal is not used for the reduction of alumina because

  1. it is thermodynamically not feasible

  2. the temperature requirement is high

  3. magnesium is not a good reducing agent

  4. it is evident from Ellingham diagram


Correct Option: B
Explanation:

Ans : 2.

In ester hydrolysis, as the reaction proceeds further, the rate of reaction increases

  1. on increase in temperature

  2. on increase in pressure

  3. due to decrease in conc. of ester

  4. due to increase in the conc. of carboxylic acid


Correct Option: D
Explanation:

Ans : 4.

The railway sleepers are made up of

  1. cast iron

  2. pig iron

  3. wrought iron

  4. nickel steel


Correct Option: A
Explanation:

Ans : 1.

Which of the following is the best reducing agent?

  1. Lithium

  2. Sodium

  3. Potassium

  4. Magnesium


Correct Option: C
Explanation:

Ans : 3.

The change in slope in the Ellingham diagram indicates

  1. change in phase

  2. ease of reduction

  3. increase in entropy

  4. decrease in free energy


Correct Option: A
Explanation:

Ans : 1.

Ellingham diagram tells that

  1. how easily a substance can be reduced

  2. how easily a substance can be oxidised

  3. how easily a substance can oxidise other substance

  4. none of the above


Correct Option: A
Explanation:

Ans : 1.

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