SSC CGL/CHSL 2015

Science and Technology Questions

1. Candela is a unit of-
A.Mass
B.Luminous intensity
C.Temperature
D.Inductance

2. Which of the following is not a colloidal solution?
A.Milk
B.Paint
C.Alcohol
D.All of the above

3. Which chemical is added in the glass during its manufacture for blue color?
A.Cobalt oxide
B.Magnesium Hydroxide
C.Ferrous oxide
D.Cuprous oxide

4. Which of the following inert gas is absent in air?
A.Neon
B.Helium
C.Redon
D.Argon

5. Sulphur is extracted from-
A.Contact process
B.Frasch process
C.Oswalt process
D.None of the above

6. Select out mismatched one-
A.Baking Soda – NaHCO₃
B.Plaster of Paris – CaSO₄
C.Washing Soda – Na₂CO₃
D.Glucose – C₆H₁₂O₆

7. Which one the following is a A.V (astronomical) unit?
A.Light year
B.Parsec
C.Both of the above
D.None of the above

8. 1 mega hertz is equal to –
A.10³ hertz
B.10⁶ hertz
C.10⁹ hertz
D.10¹² hertz

9. The word hormone was coined by –
A.Starling (1905)
B.Starling (1927)
C.Robert Hook (1665)
D.None of the above

10. Read the statements carefully
1. AIDS virus is a single stranded virus
2. AIDS virus is retrovirus

Choose the correct option-
A.Only I
B.Only II
C.Only I and II both
D.Neither I nor II

11. Baking powder mainly contains-
A.Baking soda only
B.Baking soda and Tartaric Acid
C.Baking soda and Sulphuric Acid
D.None of the above

12. Soldering wore is an alloy of-
A.Lead and Zinc
B.Lead and Tin
C.Zinc and Tin
D.Aluminium and Zinc

13. Nails and Hair are examples of-
A.Keratin
B.Fibrin
C.Elastin
D.Collagen

14. Honey is-
A.Alkaline
B.Acidic
C.Neutral D.None of the above

15. Chemical name of Aspirin is-
A.Acetic acid
B.Acetyl salicylic acid
C.Benzoic acid
D.None of the above

16. Sucrose is made up of-
A.Glucose + Galactose
B.Glucose + Fructose
C.Glucose + Maltose
D.Galactose + Lactose

17. Refrigerator was invented by-
A.William Cullen
B.Kolt
C.Robert Brown
D.Flemming

18. Which acid is found in apple?
A.Citric Acid
B.Maleic Acid
C.Formic Acid
D.All of the above

19. The largest mammal is-
A.Whale
B.African elephant
C.Lion
D.Polar Bear

20. Who gave the theory of Gravity?
A.Issac Newton
B.Charles Newton
C.John Dalton
D.Charles Babbage

Answer

1. b

2. a

3. c

4. c

5. b

6. b

7. d

8. b

9. a

10. c

11. b

12. b

13. a

14. b

15. b

16. b

17. a

18. b

19. a

20. a