Free Chemistry08 Practice Test - IAS 

Question 1

Match List I with List II and select the correct answer by using the codes given below.
List I                               List II
A. Pyrolysis          1. Takes place in the absence of oxygen
B. Gasification     2. Transfer of solid fuel to gaseous energy carrier
C. Biomass           3. Direct transfer of solid organic waste to liquid fuel
D. Combustion    4. Takes place in the presence of oxygen

A. 1   2   3   4
B. 2   3   4   1
C. 1   3   2   4
D. 3   2   1   4

SOLUTION

Solution : D

Option: (d)

Question 2

Match List I with List II and select the correct
List I                                               List II
A. Hydrogen     1. The most abundant element on the earth
B. Oxygen         2. The most abundant element in the universe
C. Nitrogen       3. Constituent of plant and animal proteins
                           4. Used as a bleaching agent

A. 1     2     4
B. 3      2     1
C. 2     1     3
D. 4     1     2

SOLUTION

Solution : C

Option: (c)

Question 3

Match List I and List II and select the correct answer by using the codes given below.
List I                            List II
A. Magnesium     1. Dolomite
B. Calcium            2. Bauxite
C. Aluminium      3. Limestone
D. Uranium         4. Pitchblende

A. 2   3   4   1
B. 1   3   2   4
C. 2   3   1   4
D. 2   1   4   3

SOLUTION

Solution : B

Option: (b)

Question 4

a radioactive substance has a half-life of four months. Three-fourth of the substance would decay in

A. months
B. months
C. 8 months
D. 12 months

SOLUTION

Solution : C

Option: (c)

Question 5

Assertion (A): Synthetic detergents can lather well in hard water.
Reason (R): Synthetic detergents form soluble calcium and magnesium salts with hard water.

A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not the correct explanation of A
C. A is true but R is false
D. A is false out R is true

SOLUTION

Solution : A

Option: (a)

Question 6

Match List I with List II and select the correct
List I (Characteristic)           List II (Particle)
A. 2                               1. Oxidation number of Mn in Mn02
B. 3                               2. Oxidation number of S in H2S2O7
C. 4                               3. Oxidation number of Ca in CaO
D. 6                               4. Oxidation number of Al in NaAlH4

A. 3   4   1   2
B. 4   3   1   2
C. 3   4   2   1
D. 4   3   2   1

SOLUTION

Solution : A

Option: (a)

Question 7

Match List I with List II and select the correct answer by using the codes given below.
List I                             List II
A. Iron               1. Activator of enzymes
B. Magnesium 2. Transfer of electron in photosynthesis
C. Chlorine       3. synthesis of fats
D. Nitrogen      4. synthesis of proteins

A. 4    2    1     3
B. 1    4    2   3
C. 3    1    4    2
D. 1    3    2   4

SOLUTION

Solution : D

Option: (d)

Question 8

Consider the following statements with reference to the periodic table of chemical elements
(a) Ionization potential gradually decreases along a period.
(b) In a group of elements, electron affinity decreases as the atomic weight increases.
(c) In a given period, electro-negativity decreases as the atomic number increases.
Which of these statements(s) is/are correct?

A. (a) only
B. only
C. (a) and (c)
D. (b) and (c)

SOLUTION

Solution : B

Option: (b)

Question 9

With reference to ionic compounds, consider the following statements
(a) Ionic compounds are insoluble in alcohol.
(b) Ionic compounds in the solid state are good conductor of electricity.
Which of these statements is/are correct?

A. Only (a)
B. Only (b)
C. Both (a) and (b)
D. Neither (a) nor (b)

SOLUTION

Solution : A

Option: (a)

Question 10

Assertion (A): A chemical reaction becomes faster at higher temperature.
Reasons (R): At higher temperature molecular motion becomes more rapid.

A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. A is false but R is true

SOLUTION

Solution : A

Option: (a)

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