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General Knowledge on Chemistry
CHEMISTRY
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1). Which one of the following is also called Stranger Gas?
Xenon
2). For which one of the following is the density maximum?
Water
3). The reaction between methane and chlorine in diffused sunlight is
Radical substitution
4). The alloy of aluminium used for making magnet is
Alnico
5). Which synthetic fibre is known as artificial silk?
Rayon
6). Which variety of glass is heat resistant?
Pyrex glass
7). The chemical used as a fixer in photography is
Sodium thiosulphate
8). Which one of the following is the softest?
Sodium
9). Which one of the following does not contain silver?
German silver
10). Nail polish remover contains
Acetone
General Knowledge on Chemistry
11). What is a mixture of potassium nitrate powdered charcoal and sulphur called?
Gun powder
12). Which is the heaviest metal?
Osmium
13). Bleaching action of chlorine is by
Oxidation
14).Bleaching powder contains
Chlorine
15).Which one of the following gases is readily soluble in water at room temperature?
Carbon dioxide
16).Radon is
Radioactive gas
17).pH of water is
7
18).pH of blood is
7.4
19).Periodic table was given by
Mendeleev
20).Bauxite is an ore of
Aluminium
21).Ruby is an oxide of
Aluminium oxide
22).First atomic theory was proposed by
John Dalton
23).Which substance is obtained by the hydrolysis of oil?
Glycerol
24).Washing soda is
Sodiun carbonate
25).Air contains maximum amount of
Nitrogen
26).The alcohol used in the preparation of dynamite is
Glycerol
General Knowledge on Chemistry
27).The element used in lead pencils is
Carbon
28).Epsom salt is chemically known as
Magnesium sulfate
29).Calcium sulphate is known as
Gypsum salt
30).Oil of vitriol is
Sulfuric acid
31).The acid present in lemon is
Citric acid
32).The term PVC used in the plastic industry stands for
Polyvinyl chloride
33).Human bone does not contain
Boron
34).Homonuclear molecules contain
Covalent bond
General Knowledge on Chemistry
35).Normal valency of nitrogen is
3
36).The isotope atoms differ in
Atomic weight
37).Nucleus of an atom contains
Protons and neutrons
38).Which is used to produce artificial rain?
Silver iodide
39).DDT is an
Insecticide
40).Aspirin is
Acetyl salicylic acid
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