9. Cholera is caused by a
a. Virus b. Bacteria c. Protozoa d. Fungi
10. The force acting on a unit area of a surface
a. Pressure b. Force c. Drag d. Friction
11. Which of the following is a good conductor of electric current?
a. Graphite b. Sulphur c. Silicon d. Diamond
12. Which of the following is a liquid at room temperature?
a. Chlorine b. Phosphorous c. Iodine d. Bromine
13. The gas usually filled in the electric bulb is
a. Hydrogen b. Nitrogen c. Oxygen d. Argon
14. Copper and silver can be drawn into wires because these are
a. Ductile b. Malleable c. Sonorous d. Conductors
15. Which of the following gasses is evolved when metals react with
acids?
a. Hydrogen b. Nitrogen c. Oxygen d. Chlorine
16. A good fuel should have
a. High calorific value b. Low ignition temperature c. Low
cost and easy availability d. All of them
17. Which of the following fuel has highest calorific value?
a. Wood b. Hydrogen c. Petrol d. Coal
18. The SI unit of energy is
a. Kilogram b. Metre c. Joule d. Newton
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Answered by
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Answer:
9. b
10. d
11. a
12. d
13. d
14. a
15. a
16. d
17. b
18. c
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