Complete the following sentences by choosing the correct option from the brackets:
(a) The general formula of an alkyl group is ............... (CnH2n+1/CnH2n-1).
(b) The aqueous solution of ............... (zinc chloride/ sodium sulphate) gives white precipitate with barium nitrate.
(c) The gas liberated when alkalis are heated with ammonium salts is ............... (N2/NH3).
(d) The alloy that contains a non-metal as one of its constituents is ............... (bronze/steel).
(e) A salt prepared by neutralization in which titration is involved is ............... (CaCl2/ NH4Cl).
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(a) The general formula of an alkyl group is CnH2n+1.
(b) The aqueous solution of sodium sulphate gives white precipitate with barium nitrate.
(c) The gas liberated when alkalis are heated with ammonium salts is NH3.
(d) The alloy that contains a non-metal as one of its constituents is steel.
(e) A salt prepared by neutralization in which titration is involved is NH4Cl.
Note: In part (b), the chemically correct answer is sodium sulphate, since barium nitrate reacts with the sulphate ion of sodium sulphate to give a white precipitate of barium sulphate (Na2SO4 + Ba(NO3)2 ⟶ BaSO4 ↓ + 2NaNO3). Zinc chloride would not give any precipitate with barium nitrate as both products would be soluble.