Chapter 15

A radioactive halogen is (a) Polonium (b) Radon (c) Astatine (d) lodine

When chlorine is passed through concentrated hot solution of \(\mathrm{KOH}\), the compound formed is (a) \(\mathrm{KClO}\) (b) \(\mathrm{KClO}_{2}\) (c) \(\mathrm{KClO}_{3}\) (d) \(\mathrm{KClO}_{4}\)

Which of the following is planar? (a) \(\mathrm{XeF}_{4}\) (b) \(\mathrm{XeO}_{4}\) (c) \(\mathrm{XeO}_{2} \mathrm{~F}_{2}\) (d) \(\mathrm{XeOF}_{4}\)

In Kroll and 1.C.I. process of the production of titanium, the inert gas used is (b) Ar (c) \(\mathrm{Kr}\) (d) \(\mathrm{Xe}\) (a) \(\mathrm{Ne}\)

Which one of the following acts as an antichlor ? (a) \(\mathrm{MnO}_{2}\) (b) \(\mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{3}\) (c) \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) (d) \(\mathrm{Na}_{2} \mathrm{SO}_{4}\)

lodine is liberated from KI solution when treated with (b) \(\mathrm{CuSO}_{4}\) (c) \(\mathrm{NiSO}_{4}\) (d) \(\mathrm{FeSO}_{4}\) (a) \(\mathrm{ZnSO}_{4}\)

Xenon difluoride is (a) Linear (b) Angular (c) Trigonal (d) Pyramidal

\(\mathrm{Zr}\) and Hf have almost equal atomie and ionie rudix beeaune (a) of diagonal relationship (b) of lanthanide contraction (c) of actinide contraction (d) both belong to same transition series

Which of the following arrangements for the three halogens \(\mathrm{Cl}\), Br, I when placed in order of their increasing electron affinity is correct ? (a) \(\mathrm{Cl}, \mathrm{Br}, \mathrm{I}\) (b) \(\mathrm{I}, \mathrm{Br}, \mathrm{Cl}\) (c) \(\mathrm{Br}, \mathrm{Cl}, \mathrm{I}\) (d) \(1, \mathrm{Cl}, \mathrm{Br}\)

Blood red coloured solution is produced when ferric chloride solution is treated with (a) \(\mathrm{KSCN}\) (b) \(\mathrm{KCN}\) (c) \(\mathrm{K}_{4} \mathrm{Fe}(\mathrm{CN})_{6}\) (d) \(\mathrm{K}_{3} \mathrm{Fe}(\mathrm{CN})_{n}\)

What is the shape of \(\mathrm{Fe}(\mathrm{CO})_{5}\) molecule? (a) Tetrahedral (b) Octahedral (c) Trigonal bipyramidal (d) Square pyramidal

Xenon hexafluoride reacts with silica to form a xenon compound \(X\). The oxidation state of Xe in \(X\) is (a) \(+2\) (b) \(+4\) (c) \(+6\) (d) 0

\(87.5 \%\) gold is how many carats? (a) 24 (b) 21 (c) 18 (d) 15

When the vapours of chromyl chloride are passed through \(\mathrm{NaOH}\) solution, it turns yellow. This is due to formation of (a) \(\mathrm{Na}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) (b) \(\mathrm{Na}_{2} \mathrm{CrO}_{4}\) (c) \(\mathrm{CrO}_{3}\) (d) \(\mathrm{H}_{2} \mathrm{CrO}_{4}\)

The iodine atom in \(\mathrm{ICl}_{2}^{-}\)involves (a) sp \(^{3}\) d hybridization (b) sp \(^{3} \mathrm{~d}^{2}\) hybridization (c) sp \(^{2}\) hybridization (c) sp \(^{2}\) hybridization

The product of oxidation of \(I\) with \(\mathrm{MnO}_{4}^{-}\)in alkaline medium is (a) \(10_{3}^{-}\) (b) \(\mathrm{I}_{2}\) (c) \(10^{-}\) (d) \(10_{4}^{-}\)

\(\mathrm{XeF}_{6}\) on complete hydrolysis gives (a) \(\mathrm{Xe}\) (b) \(\mathrm{XeO}_{2}\) (c) \(\mathrm{XeO}_{3}\) (d) \(\mathrm{XeO}_{4}\)

Identify the incorrect statement regarding mercuric chloride (a) gives scarlet precipitate with \(\mathrm{KI}\) (b) is poisonous, and egg white is used as the antidote. (c) more soluble in cold water than hot water (d) it absorbs gaseous ammonia

The silver halide, which is least soluble in \(\mathrm{NH}_{4} \mathrm{OH}\) is (a) \(\mathrm{AgF}\) (b) \(\mathrm{AgCl}\) (c) \(\mathrm{AgBr}\) (d) \(\mathrm{Agl}\)

Lucas reagent is (a) \(\mathrm{ZnCl}_{2}+\mathrm{HCl}\) (conc.) (b) \(\mathrm{MnO}_{2}+\mathrm{H}_{2} \mathrm{O}\) (c) \(\mathrm{H}_{2} \mathrm{SO}_{4}+\mathrm{HCl}\) (d) \(\mathrm{NO}+\mathrm{H}_{2} \mathrm{O}\)

The \(C_{p} / C_{v}\) ratio for noble gases is (a) \(1.99\) (b) \(1.66\) (c) \(1.33\) (d) \(1.0\)

Cinnabar is the ore of: (a) \(\mathrm{Zn}\) (b) \(\mathrm{Cd}\) (c) \(\mathrm{Hg}\) (d) \(\overline{A g}\)

A mixture of \(\mathrm{Nal}\) and \(\mathrm{NaIO}_{3}\) is treated with hot concentrated \(\mathrm{H}_{2} \mathrm{SO}_{4}\). The iodine-containing product formed is (a) \(\mathrm{HIO}_{3}\) (b) \(\mathrm{NalO}_{4}\) (o) \(\mathrm{I}_{2}\) (d) \(\mathrm{HIO}_{4}\)

The hydroxide which is soluble in excess of \(\mathrm{NaOH}\) solution is (a) \(\mathrm{Cu}(\mathrm{OH})_{2}\) (b) \(\mathrm{Fe}(\mathrm{OH})_{1}\) (c) \(\mathrm{Cr}(\mathrm{OH})_{3}\) (d) \(\mathrm{Zn}(\mathrm{OH})_{2}\)

What is formed when \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}, \mathrm{CaCl}_{2}\) and conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\) are heated ? (a) \(\mathrm{Cr}_{2}\left(\mathrm{SO}_{4}\right)_{3}\) (b) \(\mathrm{CrCl}_{3}\) (c) \(\mathrm{CrO}_{2} \mathrm{Cl}_{2}\) (d) \(\mathrm{K}_{2} \mathrm{CrO}_{4}\)

Ferrous sulphate on heating gives (a) \(\mathrm{SO}_{2}\) and \(\mathrm{SO}_{3}\) (b) \(\mathrm{SO}_{2}\) only (c) \(\mathrm{SO}_{3}\) only (d) \(\mathrm{SO}_{2}\) and \(\mathrm{O}_{2}\)

Which of the following statements is not correct when a mixture of \(\mathrm{NaCl}\) and \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) is gently warmed with conc. \(\mathrm{H}_{2} \mathrm{SO}_{4} ?\) (a) A deep red vapour is evolved (b) The vapour when passed into \(\mathrm{NaOH}\) solution gives a yellow solution of \(\mathrm{Na}_{2} \mathrm{CrO}_{4}\) (c) Chlorine gas is evolved (d) Chromyl chloride is formed

In the reaction. \(\mathrm{SnCl}_{2}+\mathrm{HgCl}_{2} \rightarrow \mathrm{A}+\mathrm{SnCl}_{4} ; \mathrm{A}\) is (a) \(\mathrm{H}_{\mathrm{g}_{2}} \mathrm{Cl}_{2}\) (b) \(\overline{\mathrm{Hg}}\) (c) \(\mathrm{HgCl}\) (d) \(\mathrm{HgCl}_{3}\)

\(\mathrm{XeOF}_{2}\) is (a) T-shaped (b) pyramidal (c) see-saw shaped (d) tetrahedral

\(\mathrm{Ni}^{2+}\), in traces, can be tested using (a) Sodium nitroprusside (b) Dimethyl glyoxime (c) Ammonium sulphocyanide (d) Potassium ferrocyanide

When thiosulphate ion is oxidized by iodine, the new product formed is (a) \(\mathrm{SO}_{3}^{2 .}\) (b) \(\mathrm{SO}_{4}^{2-}\) (c) \(\mathrm{S}_{4} \mathrm{O}_{6}^{2-}\) (d) \(\mathrm{S}_{2} \mathrm{O}_{6}^{2-}\)

In the reaction, \(\mathrm{HgCl}_{2}+\mathrm{KI} \rightarrow \mathrm{A}+\mathrm{KCl}, \mathrm{A}\) is (a) \(\mathrm{Hgl}_{2}\) (b) \(\mathrm{K}_{2} \mathrm{Hgl}_{3}\) (c) \(\mathrm{K}_{2} \mathrm{HgI}_{4}\) (d) \(\mathrm{KHgI}_{3}\)

Fluorine reacts with dilute \(\mathrm{NaOH}\) to produce (a) \(\mathrm{NaOF}, \mathrm{NaF}\) and \(\mathrm{H}_{2} \mathrm{O}\) (b) \(\mathrm{O}_{2}, \mathrm{NaF}\) and \(\mathrm{H}_{2} \mathrm{O}\) (c) \(\mathrm{OF}_{2}, \mathrm{NaF}\) and \(\mathrm{H}_{2} \mathrm{O}\) (d) \(\mathrm{F}_{2} \mathrm{O}, \mathrm{NaF}\) and \(\mathrm{H}_{2} \mathrm{O}\)

Due to lanthanide contraction (a) Fe, Co, Ni have equal size (b) \(Z r\) and Hif have equal aire (c) all f-block ions have equal size (d) all isoelectronic iens have equal sine.

Chlorine on reaction with excess of ammonia produces (a) \(\mathrm{NCl}_{3}\) and \(\mathrm{HCl}\) (b) \(\mathrm{N}_{2}\) and \(\mathrm{HCl}\) (c) \(\mathrm{NH}_{2} \mathrm{Cl}\) and \(\mathrm{NH}_{4} \mathrm{Cl}\) (d) \(\mathrm{N}_{2}\) and \(\mathrm{NH}_{4} \mathrm{Cl}\)

Which of the following series of xenon fluorides is known? (a) \(\mathrm{XeF}_{2}, \mathrm{XeF}_{4}, \mathrm{XeF}_{3}\) (b) \(\mathrm{XeF}_{2}, \mathrm{XeF}_{4}, \mathrm{XeF}_{6}\) (c) \(\mathrm{XeF}_{2}, \mathrm{XeF}_{3}, \mathrm{XeF}_{6}\) (d) \(\mathrm{XeF}_{2}, \mathrm{XeF}_{4}, \mathrm{XeF}_{5}\)

In a given sample of bleaching powder, the percentage of available chlorine is \(49 .\) The volume of chlorine obtained if \(10 \mathrm{~g}\) of the sample is treated with \(\mathrm{HCl}\) at N. T.P. is (a) \(1.51\) (b) \(3.01\) (c) \(15.01\) (d) 1501

Which of the following sets is of coinage metals? (a) \(\mathrm{Cu}, \mathrm{Ag}, \mathrm{Hg}\) (b) \(\mathrm{Zn}, \mathrm{Cd}, \mathrm{Hg}\) (c) \(\mathrm{Au}, \mathrm{Ag}, \mathrm{Cu}\) (d) Li. \(\mathrm{Na}, \mathrm{K}\)

Fluorine reacts with water to give (a) Hydrogen fluoride and oxygen (b) Hydrogen fluoride and ozone (c) Hydrogen fluoride and oxygen fluoride (d) Hydrogen fluoride, oxygen and ozone

When bleaching powder is treated with carbon dioxide (a) Chlorine is evolved (b) Calcium chloride is formed (c) No reaction occurs (d) It absorbs the gas

A white solid halide of mercury forms a black mixture with \(\mathrm{NH}_{4} \mathrm{OH}\). The halide is (a) \(\mathrm{HgCl}_{2}\) (b) \(\mathrm{Hgl}_{2}\) (c) \(\mathrm{Hg}_{2} \mathrm{I}_{2}\) (d) \(\mathrm{Hg}_{2} \mathrm{Cl}_{2}\)

The highest critical temperature is for (a) \(\mathrm{Ar}\) (b) \(\mathrm{He}\) (c) \(\mathrm{Kr}\) (d) \(\mathrm{Rn}\)

A white solid halide of mercury forms a black mixture with \(\mathrm{NH}_{4} \mathrm{OH}\). The halide is (a) \(\mathrm{HgCl}_{2}\) (b) \(\mathrm{Hgl}_{2}\) (c) \(\mathrm{Hg}_{2} \mathrm{I}_{2}\) (d) \(\mathrm{Hg}_{2} \mathrm{Cl}_{2}\)

Which of the following is the anhydride of perchloric acid? (a) \(\mathrm{ClO}_{2}\) (b) \(\mathrm{ClO}_{2}\) (c) \(\mathrm{Cl}_{2} \mathrm{O}_{6}\) (d) \(\mathrm{Cl}_{2} \mathrm{O}_{7}\)

Which compound does not dissolve in hot, dilute \(\mathrm{HNO}_{y}\) ? (a) \(\mathrm{HgS}\) (b) PbS (c) CuS (d) CdS

Which of the following is a pseudohalogen? (a) \(\mathrm{IF}_{7}\) (b) \((\mathrm{CN})_{2}\) (c) \(\mathrm{ICl}_{2}\) (d) \(\mathrm{I}_{3}^{-}\)

Lanthanide for which \(+\mathrm{II}\) and +III oxidation states are common is (a) La (b) \(\mathrm{Nd}\) (c) \(\mathrm{Ce}\) (d) Eu