Chemistry Part 2 Online Quiz


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Following quiz provides Multiple Choice Questions (MCQs) related to Chemistry. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Q 1 - Cadmium (Cd) is an element of …

A - s block

B - p block

C - d block

D - f block

Answer : C

Explanation

Atomic number of Cadmium is 48.

Q 2 - The concept of orbital i.e. elliptical & spherical was defined by …

A - Thomson’s model

B - Rutherford’s model

C - Summerfield’s model

D - Plank’s Quantum theory

Answer : B

Explanation

Summerfield further explained the Bohr’s model.

Q 3 - A human body contains …………… Calcium.

A - 1.5%

B - 2.9%

C - 4.5%

D - 3.5%

Answer : A

Explanation

N/A

Q 4 - Which among the following gases burns itself, but does not support in burning?

A - Hydrogen sulfide

B - Sodium chloride

C - Nitrous oxide

D - Helium

Answer : A

Explanation

The chemical formula is H2S and its odor is like rotten egg.

Q 5 - ……………. is used in refrigerator.

A - Ammonia

B - Carbon dioxide

C - Ozone

D - Fluorine

Answer : A

Explanation

The modern refrigeration technology normally uses a refrigerant known as HFC-134a.

Q 6 - ……………… is used in an accumulator cell.

A - Graphite

B - Zinc

C - Lead

D - Silver

Answer : C

Explanation

Accumulator cell is a rechargeable battery.

Answer : A

Explanation

N/A

Q 8 - Which among the following is used in making red glass?

A - Selenium

B - Chromium III oxide

C - Chromium III oxide

D - Chromium III oxide

Answer : A

Explanation

Copper I oxide is also used in making red glass.

Q 9 - Arsenic (As) is an element of …

A - s block

B - p block

C - d block

D - d block

Answer : B

Explanation

Atomic number of Arsenic is 33.

Q 10 - Xenon (Xe) is an element of …

A - s block

B - p block

C - d block

D - f block

Answer : B

Explanation

Atomic number of Xenon is 54.

Q 11 - Radon (Rn) is an element of …

A - s block

B - p block

C - d block

D - f block

Answer : B

Explanation

Atomic number of Radon is 86.

Q 12 - Which among the following defines the heavy water?

A - H2O2

B - D2O

C - 2H2O

D - 3H2O

Answer : B

Explanation

The chemical formula of heavy water is D2O and it is used in nuclear reactor.

Q 13 - Consider the following statements:

1. Silver and gold are the most malleable metal.

2. Iron and mercury are not the very good conductors of electricity.

Choose the correct answer from the codes given below:

A - Only 1

B - Only 2

C - Both

D - Neither 1 nor 2

Answer : C

Explanation

N/A

Q 14 - Consider the following statements:

1. Ice has less density than water.

2. Because of the hydrogen bonding, ice has an open structure with large empty space.

Choose the correct answer from the codes given below:

A - Only 1

B - Only 2

C - Both

D - Neither 1 nor 2

Answer : C

Explanation

Hydrogen bonding has a tetrahedral fashion.

Q 15 - Which one of the following is responsible for nuclear fission?

A - Neutrons

B - Positrons

C - Protons

D - Electrons

Answer : C

Explanation

In the process of nuclear fission, one atom splits into two atoms and releases energy.

Q 16 - Chemical formula of Caustic potash is …

A - KOH

B - K2OH

C - KO2H

D - KOH2

Answer : A

Explanation

Caustic potash consists of potassium, hydrogen, and oxygen.

Q 17 - Which one of the following laws states “that under constant pressure, the volume of a fixed mass of gas varies directly with its absolute temperature.”

A - Beer’s law

B - Boyle’s law

C - Charles’ law

D - Faraday’s law

Answer : C

Explanation

V/T = k

Q 18 - Which among the following is used in foam thermocole?

A - Vinyl rubber

B - Polystyrene

C - Styrene butadiene

D - Bakelite

Answer : B

Explanation

N/A

Q 19 - Consider the following statements:

1. A molecule is the smallest particle of an element or compound.

2. A molecule has no independent existence.

Choose the correct answer from the codes given below:

A - Only 1

B - Only 2

C - Both

D - Neither 1 nor 2

Answer : A

Explanation

A molecule can have a stable and independent existence e.g. N2, O2, etc.

Q 20 - Chemical formula of Quartz is …

A - Na2SiO3

B - Na2SiO4

C - Na3SiO3

D - Na5SiO3

Answer : A

Explanation

Quartz consist of sodium, silica, and oxygen.


chemistry_part2_online_quiz.htm

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