Important Chemistry GK Questions
Isotopes of an element do not have ______.
(A) Same number of electrons
(B) Same number of protons
(C) Same chemical properties
(D) Same physical properties
Correct Answer : D
Gold is alloyed with which metal to make it harder?
(A) C
(B) Sn
(C) Cu
(D) Ag
Correct Answer : C
The general name of the elements of 17th group are
(A) Metals
(B) Noble gases
(C) Transition elements
(D) Halogens
Correct Answer : D
Which carbohydrate is used in silvering of mirrors?
(A) Glucose
(B) Starch
(C) Fructose
(D) Sucrose
Correct Answer : A
Table salt gets moist during rainy season because -
(A) sodium chloride contains some quantity of sodium iodide
(B) sodium chloride contains hygroscopic impurities like - magnesium chloride
(C) sodium chloride Is hygroscopic
(D) sodium chloride is deliquescent
Correct Answer : B
Which of the following is used as a lubricant in heavy machines?
(A) Phosphorus
(B) Graphite
(C) Bauxite
(D) Sulphur
Correct Answer : B
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Rajesh Bhatia
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