Problem 1
Which is more soluble in water? (a) \(\mathrm{AgI}\) (b) \(\mathrm{AgF}\) (c) \(\mathrm{AgBr}\) (d) \(\mathrm{AgCl}\)
Problem 2
On passing \(\mathrm{H}_{2} \mathrm{~S}\) gas in group II sometimes the solution turns milky. It indicates the presence of (a) acidic salt (b) thiosulphate (c) oxidizing agent (d) reducing agent
Problem 3
Which compound does not dissolve in hot dilute \(\mathrm{HNO}_{3} ?\) (a) \(\mathrm{PbS}\) (b) \(\mathrm{HgS}\) (c) CuS (d) \(\mathrm{CdS}\)
Problem 4
A metal is burnt in air and the ash on moistening smells of ammonia. The metal is (a) \(\mathrm{Mg}\) (b) \(\mathrm{Al}\) (c) \(\mathrm{Fe}\) (d) \(\mathrm{Na}\)
Problem 5
Which of the following pair is not distinguished by passing \(\mathrm{H}_{2} \mathrm{~S} ?\) (a) As, Cd (b) \(\mathrm{Zn}, \mathrm{Mn}\) (c) \(\mathrm{Hg}, \mathrm{Pb}\) (d) \(\mathrm{Cd}, \mathrm{Pb}\)
Problem 6
In qualitative analysis \(\mathrm{NH}_{4} \mathrm{Cl}\) is added before \(\mathrm{NH}_{4} \mathrm{OH}\) (a) to increase \(\left[\mathrm{OH}^{-}\right]\)conc (b) for making \(\mathrm{HCl}\) (c) to decrease \(\left[\mathrm{OH}^{-}\right]\)conc (d) statement is wrong
Problem 7
\(\mathrm{CrO}_{3}\) dissolves in aqueous \(\mathrm{NaOH}\) to give (a) \(\mathrm{Cr}(\mathrm{OH})_{3}\) (b) \(\mathrm{Cr}(\mathrm{OH})_{2}\) (c) \(\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}\) (d) \(\mathrm{CrO}_{4}^{2-}\)
Problem 8
Which of the following is not efflorescent? (a) \(\mathrm{NaOH}\) (b) hydrated \(\mathrm{CuSO}_{4}\) (c) hydrated \(\mathrm{Na}_{2} \mathrm{CO}_{3}\) (d) all of these
Problem 9
\(\mathrm{K}_{2}\left[\mathrm{HgI}_{4}\right]\) detects the ion (a) \(\mathrm{Cl}^{-}\) (b) \(\mathrm{NO}\) (c) \(\mathrm{NH}_{2}\) (d) \(\mathrm{NH}_{4}^{+}\)
Problem 10
Which of the following cannot give iodomertic titration? (a) \(\mathrm{Cu}^{2+}\) (b) \(\mathrm{Fe}^{3+}\) (c) \(\mathrm{Ag}^{+}\) (d) \(\mathrm{Pb}^{2+}\)
