Chemistry MCQ 003

Chemistry MCQ 003

1. Which of the following is a mixture?

(A) Baking soda

(B) Milk

(C) Chloroform

(D) Copper wire

2. A mixture of naphthalene and sand is separated by

(A) evaporation

(B) using a magnet

(C) sublimation

(D) sedimentation

3. The kinetic energy of gas molecules

(A) is unaffected by temperature variations

(B) decreases with increase of temperature

(C) increases with decrease of temperature

(D) increases with increase of temperature

4. The number of neutrons in the nucleus of an atom of mass A and atomic number Z is given by

(A) A-Z

(B) A+Z

(C) Z

(D) A

5. The scientist associated with the discovery of the nucleus was

(A) Rutherford

(B) Moseley

(C) Niels Bohr

(D) JJ Thomson

6. Washing soda is

(A) sodium hydroxide

(B) sodium carbonate

(C) sodium bicarbonate

(D) potassium chloride

7. According to the modern Periodic Law, the properties of elements are periodic functions of their

(A) valency

(B) atomic mass

(C) number of neutrons

(D) atomic number

8. The non-metal which has a shining appearance is

(A) sulphur

(B) phosphorus

(C) iodine

(D) bromine

9. Which is the ‘odd man’ in the following?

(A) brass

(B) common salt

(C) cane sugar

(D) water

10. Which of the following is called ‘the King of Chemicals?

(A) Nitric acid

(B) Hydrochloric acid

(C) Silver nitrate

(D) Sulphuric acid

Answers

1. B

2. C

3. D

4. A

5. A

6. B

7. D

8. C

9. A

10. D

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