GK Quiz

1. From among the following atoms are composed of:
a) Electrons and protons
b) Electrons only
c) Protons only
d) Electrons and nuclei

2. Isotopes are known to be separated by-
a) Distillation
b) Crystallization
c) Sublimation
d) filtration

3. What is the wavelength of visible spectrum?
a) 8500 – 9990 angstrom
b) 7500 – 8000 angstrom
c) 1300 – 3000 angstrom
d) 3900 – 7600 angstrom

4. Which type of fire extinguisher is used for petroleum fire?
a) Powder type
b) Liquid type
c) Soda acid type
d) Foam type

5. Detergents which are used for cleaning clothes and utensils contain?
a) bicarbonates
b) bismuthates
c) Sulphonate
d) Linitrates

6. Soap is a mixture of sodium or potassium salts of-
a) Dicarboxylic acids
b) Monocarboxylic acids
c) Glycerol
d) Tricarboxylic acids

7. Which of the following element is used in pencils?
a) Graphite
b) Silicon
c) Charcoal
d) Phosphorous

8. Washing soda is the common name for— car
a) Sodium carbonate
b) Calcium bicarbonate
c) Sodium bicarbonate
d) Calcium carbonate

9. Which of the following gas is not known as green house gas?
a) Methane
b) Nitrous oxide
c) Carbon dioxide
d) Hydrogen

10. The hardest substance available on earth is
a) Gold
b) Iron
c) Diamond
d) Platinum