Potassium nitrate is used in
(A) medicine
(B) salt
(C) glass
(D) fertiliser
Boiling Point of a liquid due to impurities
(A) increases
(B) decreases
(C) remains unchanged
(D) None of these
Chemical structure of pearl is-
(A) Calcium carbonate
(B) Calcium carbonate and magnesium carbonate
(C) Calcium chloride
(D) Calcium sulfate
Which of the following is purified by Elevation method-
(A) Naphthalene
(B) Ether
(C) Benzoic acid
(D) None of these
Crystallization is an example of
(A) Physical change
(B) Chemical Transformation
(C) Chemical reaction
(D) Galvanization
What is Neela Thoth?
(A) Copper sulphate
(B) Calcium sulfate
(C) Iron sulfate
(D) sodium sulfate
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