Q1. The atmospheric gas that is mainly responsible for Green House effect:
(a) Ozone
(b) Nitrogen
(c) Oxygen
(d) Carbondioxide
Q2. The Refrigerant ‘FREON’ is
(a) Calcium Tetra Fluoride
(b) Difluoro Dichloro Methane
(c) Fluorspar and Felspar
(d) Hydrofluosilic Acid
Q3. Which is the largest living bird on Earth?
(a) Emu
(b) Ostrich
(c) Albatross
(d) Siberian Crane
Q4. Electric bulbs are filled with:
(a) Nitrogen
(b) Carbon dioxide
(c) Argon
(d) Oxygen
Q5. The ratio of pure gold in 18 carat gold is
(a) 100%
(b) 80%
(c) 75%
(d) 60%
Q6. An example of semiconductor is
(a) German silver
(b) Germanium
(c) Phosphorous
(d) Arsenic
Q7. Which one of the following gases has the highest calorific value?
(a) Natural gas
(b) Water gas
(c) Coal gas
(d) Indane gas
Q8. An example of replenshible energy source is—
(a) Coal
(b) Petroleum
(c) Lignite
(d) Biomass
Q9. Bark of this tree is used as a condiment–
(a) Cinnamon
(b) Clove
(c) Neem
(d) Palm
Q10. Tar roads get damaged if there is
(a) stagnation of water on road
(b) heavy traffic
(c) no maintenance
(d) no sloping
Q11. The normal body temperature of human beings is
(a) 96.4 °F
(b) 97.4 °F
(c) 98.4 °F
(d) 99.4 °F
Q12. Which of the following is used for refrigeration?
(a) Sulphur dioxide
(b) Chlorine
(c) Freon
(d) Phosphine
Q13. Epsom salt is used
(a) as purgative
(b) in softening water
(c) in paper industry
(d) in making tooth paste
Q14. Liver-oil of fish is rich in
(a) Vitamin A
(b) Vitamin C
(c) Vitamin k
(d) Vitamin E
Q15. Among the following which is always found in free-state in nature?
(a) Gold
(b) Silver
(c) Sodium
(d) Copper
CRACK SSC CGL 2017
