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Chemistry Quiz - General Science Objective Questions and Answers for Competitive Exams

(1) The system that uses radioactivity to decide the period of materials of pre-historic period is :
[A] Radium dating
[B] Uranium dating
[C] Carbon dating
[D] Deuterium dating

Comment

Answer: Option [C]
(2) Which of the following is a carbohydrate ?
[A] Nylon
[B] Cane-sugar
[C] Turpentine
[D] Hydrogen peroxide

Comment

Answer: Option [B]

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(3) Maximum iron ore is found in which of the following states ?
[A] FeCO3
[B] Fe2O3
[C] Fe3O4
[D] FeS2

Comment

Answer: Option [B]
(4) Commercial nitric acid is coloured because it contains dissolved :
[A] Oxygen
[B] Nitrous oxide
[C] Nitrogen dioxide
[D] Colored impurities

Comment

Answer: Option [C]
(5) Which gas is used for artificial fruit ripening of green fruit ?
[A] Ethylene
[B] Acetylene
[C] Ethane
[D] Methane

Comment

Answer: Option [A]
(6) What is the chemical name for ‘baking soda’?
[A] Sodium carbonate
[B] Sodium bicarbonate
[C] Sodium nitrite
[D] Sodium nitrate

Comment

Answer: Option [B]
(7) Which of the following gases is present under pressure in soft drinks ?
[A] Oxygen
[B] Nitrogen
[C] Carbon dioxide
[D] Nitrous oxide

Comment

Answer: Option [C]
(8) Which radioactive element used in heat pacemakers ?
[A] Uranium
[B] Deuterium
[C] Plutonium
[D] Radium

Comment

Answer: Option [C]
(9) The anode in a dry cell consists of :
[A] Copper
[B] Zinc
[C] Cadmium
[D] Graphite

Comment

Answer: Option [B]
(10) Milk is a colloidal system in which :
[A] Water is dispersed in fat
[B] Fat is dispersed in water
[C] Fat and water are dispersed in each other
[D] Fat is dissolved

Comment

Answer: Option [B]

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