Chemistry Multiple Choice Questions and Answers for Competitive Exams

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Questions
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

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

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

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

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

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

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

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

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

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

Answer: Option [B]

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