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Questions:-
Q1. Beryllium Sulphate is less soluble in water due to ?(a)High inflammable energy
(b) Low Energy of dissociation
(c) Low inflammable energy
(d) ionic band
Q2. What is the name of that system which uses
radioactivity to decide the period of materials of pre
his tone period ?
(a) Radium dating
(b) Uranium dating
(c) Carbon dating
(d) Deuterium dating
Q3. Cement is made hard with
(a) dehydration
(b) hydration and dissociation of water
(c) Dissociation of water
(d) Polymerisation
Q4. What happens when a chemical bond is formed ?
(a) energy is always absorbed
(b) energy in always released
(c) more energy is released than is absorbed
(d) energy is neither released nor absorbed
Q5. Which among the following is a carbohydrate ?
(a) Nylon
(b) Cane sugar
(c) Turpentine
(d) Hydrogen peroxide
Q6. In which of the following states maximum iron ore is
found ?
(a) FeC03
(b) Fe203
(c) Fe304
(d) FeS2
Q7. Which one of the following metals pollutes the air of a
city having large number of automobiles?
(a) Cadmium
(b) Chromium
(c) Lead
(d) Copper
Q8. What is the Chemical name for baking soda?
(a) Sodium carbonate
(b) Sodium bicarbonate
(c) Sodium nitrite
(d) Sodium nitrate
Q9. An atomic pile is used for
(a) producing X rays
(b) conducting nuclear fission
(c) conducting thermonuclear fusion
(d) accelerating atoms
Q10. Which of the following gases is present under pressure in soft drinks?
(a) Oxygen
(b) Nitrogen
(c) Carbon dioxide
(d) Nitrous oxide
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