MCQ based Questions SMMCQ007


1. Potassium nitrate is used in

A. medicine
B. fertiliser
C. salt
D. glass

Answer: Option B

2. Permanent hardness of water may be removed by the addition of

A. sodium carbonate
B. alum
C. potassium permanganate
D. lime

Answer: Option A

3. Soda water contains

A. carbonic acid
B. sulphuric acid
C. carbon dioxide
D. nitrous acid

Answer: Option C

4. The most important ore of aluminium is

A. galena
B. calamine
C. calcite
D. bauxite

Answer: Option D

5. Most soluble in water is

A. camphor
B. sulphur
C. common salt
D. sugar

Answer: Option D

6. Which of the following was to be discovered first in the chromospheres of the sun?

A. Krypton
B. Xenon
C. Neon
D. Helium

Answer: Option D

7. Which of the following is in liquid form at room temperature?

A. Lithium
B. Sodium
C. Francium
D. Cerium

Answer: Option C

8. Sodium metal is kept under

A. petrol
B. alcohol
C. water
D. kerosene

Answer: Option D

9. Which of the following are the ingredients of gun metal?

A. Iron, Zinc, Titanium
B. Iron, tin
C. Iron, Brass, Tin
D. Copper, Tin

Answer: Option D

10. From which mineral is radium obtained?

A. Rutile
B. Haematite
C. Limestone
D. Pitchblende

Answer: Option D