Hypo which is used in photography, chemically called?
(A) Silver Bromide
(B) sodium thio sulfate
(C) sodium phosphate
(D) sodium nitrate
Which acid is used as a dehydrating agent?
(A) hydrochloric acid
(B) sulfuric acid
(C) acetic acid
(D) nitric acid
Which of the following gas is not present in the atmosphere?
(A) Nitrogen
(B) Helium
(C) Chlorine
(D) Krypton
Which of the following method is adopted to remove salt from sea water?
(A) sublimation
(B) Evaporation
(C) crystallization
(D) distillation
Vinegar is acidic in nature due to
(A) Citric acid
(B) sulfuric acid
(C) hydrochloric acid
(D) acetic acid
Which element is found the most in minerals and rocks?
(A) Carbon
(B) Silicon
(C) Hydrogen
(D) Boron
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