Which of the following metals does not form amalgam?
(A) Jink
(B) Iron
(C) Manganese
(D) Copper
Ant stings occur in?
(A) oxide acid
(B) Formic acid
(C) lactic acid
(D) None of these
Used in removing permanent hardness of water?
(A) running soda
(B) bleaching powder
(C) Caustic soda
(D) Baking Soda
Which of the following metals does not react with cold or hot water?
(A) Na
(B) Ca
(C) Mg
(D) Fe
Alkali converts red litmus solution?
(A) in green
(B) Indigo
(C) Colorless
(D) (D) yellow
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