16. Which of the following substances is a bad conductor of electricity but a good conductor of heat ?
(a) Mica
(b) Perspex
(c) Celluloid
(d) Asbestos
Explanation
Explanation : No answer description available for this question.
Let us discuss.
17. Which of the following is a non metal that remains liquid at room temperature?
(a) Phosphorous
(b) Bromine
(c) Chlorine
(d) Helium
Explanation
Explanation : No answer description available for this question.
Let us discuss.
18. Chlorophyll is a naturally occurring chelate compound in which central metal is
(a) copper
(b) magnesium
(c) iron
(d) calcium
Explanation
Explanation : No answer description available for this question.
Let us discuss.
19. Which of the following metals forms an amalgam with other metals?
(a) Tin
(b) Mercury
(c) Lead
(d) Zinc
Explanation
Explanation : No answer description available for this question.
Let us discuss.
20. Which of the following is used in pencils?
(a) Graphite
(b) Silicon
(c) Charcoal
(d) Phosphorous
Explanation
Explanation : No answer description available for this question.
Let us discuss.
Related Posts
General Science » Exercise - 12. The gas usually filled in the electric bulb is : (a) nitrogen (b) hydrogen (c) carbon dioxide (d) oxygen Tags: general, science, gas, filled, electric, bulb, nitrogen, hydrogen, carbon, dioxide
General Science » Exercise - 130. The gas usually filled in the electric bulb is (a) nitrogen (b) hydrogen (c) carbon dioxide (d) oxygen Tags: general, science, gas, filled, electric, bulb, nitrogen, hydrogen, carbon, dioxide
General Science » Exercise - 123. Which of the gas is not known as green house gas? (a) Methane (b) Nitrous oxide (c) Carbon dioxide (d) Hydrogen Tags: general, science, gas, methane, nitrous, oxide, carbon, dioxide, hydrogen
General Science » Exercise - 14. Which of the gas is not known as green house gas ? (a) Methane (b) Nitrous oxide (c) Carbon dioxide (d) Hydrogen Tags: general, science, gas, methane, nitrous, oxide, carbon, dioxide, hydrogen
General Science » Exercise - 19. What is laughing gas ? (a) Nitrous Oxide (b) Carbon monoxide (c) Sulphur dioxide (d) Hydrogen peroxide Tags: general, science, gas, nitrous, oxide, carbon, dioxide, hydrogen