Chapter 13

What gas is produced when red lead is treated with conc. nitric acid ? (a) NO (b) \(\mathrm{NO}_{2}\) (c) both Type_ro (d) none

Type metal is an alloy containing (a) Pb, \(S b\) and \(S_{n}\) (b) \(\mathrm{Al}, \mathrm{Sb}\) and \(\mathrm{Pb}\) (c) \(\mathrm{Cu}, \mathrm{Pb}\) and \(\mathrm{Sn}\) (d) Pb, Sb and \(\mathrm{Si}\)

Butter of tin is (a) \(\mathrm{SnCl}_{2} \cdot 5 \mathrm{H}_{2} \mathrm{O}\) (b) \(\mathrm{SnCl}_{2}-2 \mathrm{H}_{2} \mathrm{O}\) (c) \(\mathrm{SnCl}_{4}+4 \mathrm{H}_{2} \mathrm{O}\) (d) \(\mathrm{SnCl}_{4}+5 \mathrm{H}_{2} \mathrm{O}\)

The shapes of the molecules of \(\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}\) and \(\left(\mathrm{SiH}_{3}\right)_{3} \mathrm{~N}\) are (a) Respectively planar triangular and pyramidal (b) Respectively pyramidal and planar triangular (c) Both pyramidal (d) Both planar triangular

Oxidation state of Ga in \(\mathrm{GaCl}_{2}\) is (a) \(+1\) (b) \(+2\) (c) \(+3\) (d) twn \(g\)

Which of the following is not hydrolysed? (a) \(\mathrm{CCl}_{4}\) (b) \(\mathrm{SiCl}_{4}\) (c) \(\mathrm{SnCl}_{4}\) (d) \(\mathrm{I} \mathrm{O} \mathrm{Cl}_{1}\)

The formula of white lead is (a) \(\mathrm{Pb}(\mathrm{OH})_{2}-\mathrm{FbCO}_{3}\) (b) \(2 \mathrm{PbCO}_{3} \cdot \mathrm{Pb}(\mathrm{OH})_{2}\) (c) \(\mathrm{Pb}(\mathrm{OH})_{2} \cdot \mathrm{Pb}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2}\) (d) \(\mathrm{PbCO}_{3}-\mathrm{PbO}\)

In diborane: (a) four bridged hydrogens and two terminal hydrogens are present (b) two bridged hydrogens and four terminal hydrogens are present (c) three bridged hydrogens and three terminal hydrogens are present (d) none of these

Percentage of lead in lead pencil is (a) Zero (b) 20 (c) 80 (d) 70

Which of the following compounds is formed when boron trichloride is treated with water? (a) \(\mathrm{H}_{3} \mathrm{BO}_{3}+\mathrm{HCl}\) (b) \(\mathrm{B}_{2} \mathrm{H}_{6}+\mathrm{HCl}\) (c) \(\mathrm{B}_{2} \mathrm{O}_{3}+\mathrm{HCl}\) (d) none of these

What gas is evolved when boric anhydride is heated with mercuric eyanide? (a) \(\mathrm{CO}\) (b) \(\mathrm{CO}_{2}\) (c) both (d) None

The most covalent aluminum halide is (a) \(\mathrm{AIF}_{3}\) (b) \(\mathrm{AlCl}_{3}\) (c) \(\mathrm{AIBr}_{3}\) (d) \(\mathrm{AlI}_{3}\)

The carbide which gives propyne on hydrolysis.? (a) \(\mathrm{Al}_{4} \mathrm{C}_{3}\) (b) \(\mathrm{CaC}_{2}\) (c) \(\mathrm{Fe}_{3} \mathrm{C}\) (d) \(\mathrm{Mg}_{2} \mathrm{C}_{3}\)

Phosgene is the common name given to (a) Carbonyl chloride (b) Phosphine (c) Phosphorous oxychloride (d) Phosphorus trichloride

What is the formula of carbon suboxide? (a) \(\mathrm{CO}\) (b) \(\mathrm{CO}_{2}\) (c) \(\mathrm{C}_{2} \mathrm{O}_{4}\) (d) \(\mathrm{C}_{3} \mathrm{O}_{2}\)

Tin reacts with conc. \(\mathrm{HNO}_{3}\) and gives (a) Stannic nitrate (b) Stannous nitrate (c) Metastannic acid (d) None of these

Which of the following exists? (a) plumbic iodide (b) plumbic chloride (c) plumbic bromide (d) two of the above

Glass is soluble in (a) HF (b) \(\mathrm{H}_{2} \mathrm{SO}_{4}\) (c) \(\mathrm{HClO}_{4}\) (d) Aqua-regia

Yellow PbO is known as (a) Chrome yellow (b) Yellow lead (c) massicot (d) Lead Gilass

The shape of \(\mathrm{SnCl}_{4}\) is (a) Square planar (b) Square pyramidal (c) Tetrahedral (d) Irregular tetrahedral

The number and type of bonds between two carbon atoms in \(\mathrm{CaC}_{3}\) are (a) One sigma and one pi bond (b) Ohe sigma and two pi bonds (c) One sigma and one half pi bond (d) One sigma bond

Which out of the following is called sugar of lead (a) \(\mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2}\) (b) \(\mathrm{PbCl}_{2}\) (c) \(\mathrm{PbCO}_{3} \cdot \mathrm{Pb}(\mathrm{OH})_{2}\) (d) \(\mathrm{Pb}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2}\)

Identify the statement that is not correct as far as structure of diborane is concerned (a) There are two bridging hydrogen atoms in diborane (b) Each boron atom forms four bonds in diborane (c) The hydrogen atoms are not in the same plane in diborane (g) All B \(\bar{H}\) bonds in diborane are similar

Which of the following pairs of ions cannot coexist. ? (a) stannous and ferrous 6) stannous and ferric (c) stannic and ferrous (d) stannic and ferric

Boric acid is prepared from borax by the action of \(\begin{array}{ll}\text { (a) Hydrochloric acid } & \text { (b) Sodium hydroxide }\end{array}\) (c) Carbon dioxide (d) Sodium carbonate Which does not exist?

When \(\mathrm{Al}\) is added to potassium hydroxide solution (a) no reaction takes place (b) oxygen is evolved (c) water is produced (d) hydrogen is evolved Plumbosolvency

Plumbosolvency means dissolution of lead in (a) hot water (b) acids (c) ordinary water (d) alkalies

Which of the following gases is evolved when aluminum is boiled with caustic potash? (a) \(\mathrm{O}_{2}\) (b) Both \(\mathrm{O}_{2}\) and \(\mathrm{H}_{2}\) (c) \(\mathrm{H}_{2} \overline{\mathrm{O}}\) (vapour) (d) \(\mathrm{H}_{2}\) \(\mathrm{CO}\)

CO forms a volatile compound with (a) Nickel (b) Copper (c) Sodium The hydroxide of which to (d) Aluminum

The hydroxide of which metal ion is soluble in excess of sodium hydroxide solution (a) \(\mathrm{Fc}^{3+}\) (b) \(\mathrm{Cr}^{3+}\) (c) \(\mathrm{Sn}^{2+}\) (d) \(\mathrm{Cu}^{2+}\)

Which among the following carbide is methanide? (a) \(\mathrm{Al}_{4} \mathrm{C}_{3}\) (b) \(\mathrm{CaC}_{2}\) (c) \(\mathrm{B} \mathrm{e}_{2} \mathrm{C}\) (d) SiC

Borax is prepared by treating colemanite with (a) \(\mathrm{NaNO}_{3}\) (b) \(\mathrm{NaCl}\) (c) \(\mathrm{NaHCO}_{3}\) (d) \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)