Chemistry Part 1 Online Quiz



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 - Potassium bromide is used in

A - Fertilizer

B - Bakery

C - Gunpowder

D - Photography

Answer : D

Explanation

Formula of Potassium bromide is KBr.

Q 2 - The chemical formula of Quick lime is

A - CaO

B - Ca2O

C - CaO2

D - CaO4

Answer : A

Explanation

Quick lime consists of calcium and Oxygen.

Q 3 - Consider the following statements:

1. Compounds are the pure substances those are composed of two or more different elements in fixed proportion by mass.

2. The properties of a compound are completely different from those of the elements from which it is made.

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

Examples of compound are Salt, Sugar, Water etc.

Answer : A

Explanation

Table salt comprises of tiny cubes tightly bound together through the ionic bonding of sodium and chloride ions.

Q 5 - In reference to periodic table, halogens belong to

A - Group 2

B - Group 17

C - Group 15

D - Group 18

Answer : B

Explanation

N/A

Q 6 - In reference to periodic table, noble gases belong to

A - Group 2

B - Group 11

C - Group 15

D - Group 18

Answer : D

Explanation

N/A

Q 7 - The pH value of milk is

A - 6

B - 8

C - 6.6

D - 3.8

Answer : C

Explanation

The pH value of milk ranges between 6.5 and 6.7.

Answer : B

Explanation

N/A

Q 9 - Because of cooking at high temperature, the content of vitamins of food

A - Increases

B - Decreases

C - Remains same

D - First increases and then decreases

Answer : B

Explanation

N/A

Answer : A

Explanation

The calcium bicarbonate and magnesium cause temporary hardness.

Q 11 - Polonium (Po) is an element of

A - s block

B - p block

C - d block

D - f block

Answer : B

Explanation

Atomic number of Polonium is 84.

Q 12 - Which among the following is used in killing rats?

A - Zinc phosphide

B - Zinc phosphate

C - Zinc chloride

D - Zinc nitrate

Answer : A

Explanation

The chemical formula of zinc phosphide is Zn3P2.

Q 13 - Which among the following is used in cancer treatment?

A - Cobalt 60

B - Copper 58

C - Sodium oxide

D - Chloride

Answer : A

Explanation

Cobalt-60 releases beta radioactive isotope.

Q 14 - The process, by which liquid get changed into gas, is known as

A - Evaporation

B - Sublimation

C - Condensation

D - Conduction

Answer : A

Explanation

N/A

Answer : A

Explanation

A light wave is a sort of electromagnetic wave.

Q 16 - In reference of ionic compounds, consider the following statements:

1. Ionic compounds are not good conductor of electricity in the solid state.

2. Ionic compounds are usually not soluble in water.

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

Ionic compounds are soluble in water.

Q 17 - What is chemical formula of Ascorbic acid?

A - C6H8O6

B - C8H8O6

C - C8H8O4

D - C8H6O6

Answer : A

Explanation

The source of Ascorbic acid is vitamin C.

Q 18 - Gadolinium (Gd) is an element of

A - s block

B - p block

C - d block

D - f block

Answer : D

Explanation

Atomic number of Gadolinium is 64.

Q 19 - Platinum (Pt) is an element of

A - s block

B - p block

C - d block

D - f block

Answer : C

Explanation

Atomic number of Platinum is 78.

Q 20 - Lithium (Li) is an element of

A - s block

B - p block

C - d block

D - f block

Answer : A

Explanation

Atomic number of Lithium is 3.

chemistry_part1_online_quiz.htm
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