Chemistry General Knowledge Questions and Answers: Chemistry GK
Chemistry-General Knowledge questions and answers
121. The chemical used as a fixer in photography is
A. sodium sulphate
B. borax
C. sodium thiosulphate
D. ammonium sulphate
Answer:C
122. Which one of the following is the softest?
A. sodium
B. iron
C. aluminium
D. lithium
Answer:A
123. Which one of the following is an element?
A. ruby
B. topaz
C. sapphire
D. diamond
Answer:D
124. Which one of the following is also called Stranger Gas?
A. Neon
B. Argon
C. Xenon
D. Nitrous oxide
Answer:C
125. For which one of the following is the density maximum?
A. Ice
B. Water
C. Benzene
D. Chloroform
Answer:B
126. The alcohol used in power alcohol is
A. propanol
B. ethyl alcohol
C. methyl alcohol
D. ethylene glycol
Answer:B
127. The reaction between methane and chlorine in diffused sunlight is
A. oxidation
B. reduction
C. polymerisation
D. substitution
Answer:D
128. The alloy of aluminium used for making magnet is
A. duralumin
B. Y–alloy
C. alnico
D. aluminium bronze
Answer:C
129. Bleaching powder contains
A. nitrogen
B. iodine
C. chlorine
D. bromine
Answer:C
130. Which one of the following gases is readily soluble in water at room temperature?
A. chlorine
B. nitrogen
C. ammonia
D. carbon dioxide
Answer:D
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Chemistry-General Knowledge questions and answers
131. Radon is
A. germon radio
B. inert gas
C. artificial fibre
D. an explosive
Answer:B
132. pH of water is
A. 4
B. 7
C. 12
D. 18
Answer:B
133. pH of blood is
A. 4
B. 6.4
C. 7.4
D. 8
Answer:C
134. Natural rubber is a polymer derived from
A. isoprene
B. ethylene
C. propylene
D. butadiene
Answer:A
135. First atomic theory was proposed by
A. John Dalton
B. E.Rutherford
C. De Broglie
D. D.I.Mendeleef
Answer:A
136. Which substance is obtained by the hydrolysis of oil?
A. ethanol
B. glycol
C. acetic acid
D. glycerol
Answer:D
137. Washing soda is
A. sodium sulphite
B. sodium bicarbonate
C. sodiun carbonate
D. sodium biosulphite
Answer:C
138. Air contains maximum amount of
A. oxygen
B. nitrogen
C. hydrogen
D. carbon dioxide
Answer:B
139. Human bone does not contain
A. calcium
B. carbon
C. oxygen
D. phosphorous
Answer:C
140. Homo nuclear molecules contain
A. polar bond
B. covalent bond
C. ionic bond
D. coordinate bond
Answer:B
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Chemistry-General Knowledge questions and answers
141. Normal valency of nitrogen is
A. 2
B. 3
C. 4
D. 5
Answer:B
142. The isotope atoms differ in
A. atomic number
B. number of protons
C. number of electrons
D. atomic weight
Answer:D
143. Nucleus of an atom contains
A. electrons
B. protons
C. electrons and protons
D. protons and neutrons
Answer:D
144. Which one of the following does not contain silver?
A. Horn silver
B. Ruby silver
C. German silver
D. Lunar caustic
Answer:C
145. Nail polish remover contains
A. acetone
B. benzene
C. acetic acid
D. petroleum ether
Answer:A
146. What is a mixture of potassium nitrate powdered charcoal and sulphur called?
A. paint
B. glass
C. gun powder
D. cement
Answer:C
147. Which is the heaviest metal?
A. iron
B. mercury
C. nickel
D. osmium
Answer:B
148. Bleaching action of chlorine is by
A. oxidation
B. reduction
C. decomposition
D. hydrolysis
Answer:C
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Rajesh Bhatia
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