Chemistry GK Quiz and Questions
What type of chemical reaction is combustion of natural gas?
(A) combination reaction
(B) decomposition reaction
(C) exothermic reaction
(D) dissolution reaction
Correct Answer : C
An acid must contain mainly one atom which reacts with the metal to produce a gas.
(A) Hydrogen
(B) oxygen
(C) Nitrogen
(D) Ammonia
Correct Answer : A
On heating copper powder in air, a layer of copper oxide accumulates on its surface. What is the color of this layer?
(A) Black
(B) White
(C) Yellow
(D) Brown
Correct Answer : A
Herbs- The decomposition of vegetables into compost is an example of which reaction?
(A) endothermic
(B) exothermic
(C) substitution
(D) Amphibian
Correct Answer : B
What type of acid is found in curd?
(A) lactic acid
(B) citric acid
(C) Oxalic acid
(D) Others
Correct Answer : A
What is the pH value of sodium hydroxide?
(A) 11
(B) 12
(C) 13
(D) 14
Correct Answer : D
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