Lead Monoxide

Q.

Among the following compounds, how many are amphoteric in nature?

1. $\mathrm{Be}{\left(\mathrm{OH}\right)}_2$

2. $\mathrm{BeO}$

3. $\mathrm{Ba}{\left(\mathrm{OH}\right)}_2$

4. $\mathrm{Sr}{\left(\mathrm{OH}\right)}_2$

Q. Match List-I with List-II

List-I	List-II
(a) $NaOH$	(i) Acidic
(b) $Be(OH{)}_2$	(ii)Basic
(c)$Ca(OH{)}_2$	(iii) Amphoteric
(d) $B(OH{)}_3$
(e) $Al(OH{)}_3$

Choose the most appropriate answer from the options given below :

1. $\text{(a)-(ii), (b)-(ii), (c)-(iii), (d)-(i), (e)-(iii)}$
2. $\text{(a)-(ii), (b)-(ii), (c)-(iii), (d)-(ii), (e)-(iii)}$
3. $\text{(a)-(ii), (b)-(i), (c)-(ii), (d)-(iii), (e)-(iii)}$
4. $\text{(a)-(ii), (b)-(iii), (c)-(ii), (d)-(i), (e)-(iii)}$

Q. The compound that is insoluble in acetic acid is:

1. calcium oxide
2. calcium carbonate
3. calcium oxalate
4. calcium hydroxide

Q. Fluorine react with water to give:

1. Hydrogen fluoride and oxygen
2. Hydrogen fluoride and ozone
3. Hydrogen fluoride and oxygen fluoride
4. All of the above

Q. An aqueous solution of a substance gives a white precipitate on treatment with dilute hydrochloric acid, which dissolves on heating. When hydrogen sulphide is passed thorugh the hot acidic solution, a black precipitate is obtained. The substance is a:

1. $H{g}^{2+}\text{salt}$
2. $C{r}^{2+}\text{salt}$
3. $A{g}^{2+}\text{salt}$
4. $P{b}^{2+}\text{salt}$

Q. An ethyl alcohol exhibits an acidic character on reaction with :

1. Hydrogen chloride
2. Acetic acid
3. Sodium metal
4. Acidic $K_{2}C{r}_2{O}_7$

Q.

Name the products formed when ammonium nitrate is heated?

Q. An aqueous solution of a mixture of two inorganic salts, when treated with dilute HCl, gave a precipitate (P) and a filtrate (Q). The precipitate P was found to dissolve in hot water. The filtrate (Q) remained unchanged, when treated with $H_2$S in a dilute mineral acid medium. However, it gave a precipitate with $H_2$S in an ammonical medium. The precipitate R gave a coloured solution (S), when treated with $H_2{O}_2$ in an aqueous NaOH medium.

The coloured solution S contains:

1. $F{e}_2(S{O}_4{)}_3$
   
2. $CuS{O}_4$
   
3. $ZnS{O}_4$
   
4. $N{a}_{2}Cr{O}_4$

Q. When a metal rod $M$ is dipped into an aqueous colourless concentrated solution of $AgN{O}_3$, the solution turns light blue. Addition of aqueous $NaCl$ to the blue solution gives a white precipitate O. Addition of aqueous $N{H}_3$ dissolves $O$ and gives an intense blue solution.
The final solution contains:

1. $\left[Pb\right(N{H}_3{)}_4{]}^{2+}$ and $[CoC{l}_4{]}^{2-}$
2. $\left[Al\right(N{H}_3{)}_4{]}^{3+}$ and $\left[Cu\right(N{H}_3{)}_4{]}^{2-}$
3. $\left[Ag\right(N{H}_3{)}_2{]}^{+}$ and $\left[Cu\right(N{H}_3{)}_4{]}^{2-}$
4. $\left[Ag\right(N{H}_3{)}_2{]}^{+}$ and $\left[Ni\right(N{H}_3{)}_6{]}^{2+}$

Q. When a metal rod $M$ is dipped into an aqueous colourless concentrated solution of compound $N$, the solution turns light blue. Addition of aqueous $NaCl$ to the blue solution gives a white precipitate $O$. Addition of aqueous $N{H}_3$ dissolves $O$ and gives an intense blue solution.

1. b
2. a
3. d
4. c

Q. Yellow ppt.of compound (I) is insoluble in:

1. dil.$HN{O}_3$
2. none of the above
3. NaOH
4. $C{H}_{3}COOH$

Q. Lead nitrate on strong heating gives:

1. $PbO,N{O}_2,O_2$
2. $Pb{O}_2,PbO,N{O}_2$
3. $PbO,NO,O_2$
4. $PbO,NO,N{O}_2$

Q.

Identify the acid which matches the following description:

The acid on mixing with silver nitrate solution produces a white precipitate which is soluble in excess ammonium hydroxide.

Q. A metal salt solution forms a yellow precipitate with potassium chromate in acetic acid and a white precipitate with dilute sulphuric acid, but gives no precipitate with sodium chloride or iodide. The white precipitate obtained when sodium carbonate is added to the metal salt solution consists of :

1. Lead carbonate
2. Basic lead carbonate
3. Strontium carbonate
4. Barium carbonate

Q.

Name the nitrate which :

Gives two gases and leaves residue.

Q. An organic compound $\underset{–}{X}$ is oxidised by using acidified $K_{2}C{r}_2{O}_7$ solution. The product obtained reacts with phenyl hydrazine but does not answer silver mirror test. The compound $\underset{–}{X}$ is :

1. $2$-propanol
2. ethanal
3. ethanol
4. $C{H}_{3}C{H}_{2}C{H}_3$

Q. If a solution of a salt in dil. nitric acid silver nitrate is added, a pale yellow precipitate is obtained. If this precipitate is partly soluble in ${NH}_{4}OH$, then the acid radical of the salt is :

1. chloride
2. nitrate
3. bromide
4. sulphate

Q. Dilute sulphuric acid will produce a white precipitate when added to a solution of ________.

1. sodium nitrate
2. lead nitrate
3. copper nitrate
4. zinc nitrate

Q. An aqueous solution of a substance gives a white precipitate on treatment with dilute hydrochloric acid, which dissolves on heating. When hydrogen sulphide is passed through the hot acidic solution, a black precipitate is obtained. The substance is a :

1. $H{g}_2^{+}salt$
2. $C{r}^{2+}salt$
3. $A{g}^{+}salt$
4. $P{b}^{2+}salt$

Q.

On heating strongly, Lead (II) nitrate yields:

1. $PbO$

2. $N{O}_2$

3. $O_2$

4. $NO$

Q.

$Pb{C}_2{O}_4\underrightarrow{\Delta }A+C{O}_2+CO$

Identify A.

1. $Pb{O}_2$

2. $PbO$

3. $P{b}_{2}O$

4. $\text{None of these}$

Q. A certain metal (A) is boiled in dilute nitric acid to give a salt (B) and an oxide of nitrogen (C). An aqueous solution of (B) with brine gives a precipitate (D) which is soluble in ammonium hydroxide. On adding aqueous solution of (B) to hypo solution, a white precipitate (E) is obtained. (E) on standing turns to a black compound.Compound (A) to (F) are identified as:

Q.

1. True
2. False

Q. ______ gives yellow precipitate when treated with $I_2/NaOH$.

1. 1-Propanol
2. Methanal
3. Methanol
4. 2-Propanol

Q. Aluminium and potassium hydroxide reacts with water to form the potassium salt $\left(X\right)$. Then with the addition of sulphuric acid in presence of water, it is converted into a precipitate known as alum. Identify $\left(X\right)$.

1. $KAl(OH{)}_4$
2. None of the above
3. $Al(OH{)}_3$
4. $K_{2}Al(OH{)}_4$

Q. When acetaldehyde is heated with Fehling's solution, it gives a red precipitate of :

1. $CuO$
2. $Cu+C{u}_{2}O+CuO$
3. $Cu$
4. $C{u}_{2}O$

Q. An aqueous solution of a substance gives a white precipitate on treatment with $dil.HCl$ which dissolves on heating. When $H_{2}S$ is passed through the hot acidic solution, a black precipitate is obtained. The substances are not :

1. $H{g}_2^{2+}$ salt
2. $C{u}^{2+}$ salt
3. $A{g}^{+}$ salt
4. $P{b}^{2+}$ salt

Q. The sodium extract of an organic compound on acidification with acetic acid and addition of lead acetate solution gives a black precipitate.
The organic compound contains :

1. nitrogen
2. halogen
3. sulphur
4. phosphorus

Q. One or more of the following substances viz $BaC{l}_2,N{a}_{2}S{O}_4,CaC{O}_3,NaOHandZnS{O}_4$ are present in a mixture. On dissolving the mixture in water, a clear solution is obtained which
gives a pink colour with phenolphthalein. To the solution dilute $HCl$ is added gradually when a precipitate is formed initially which dissolves in excess. The composition of the mixture is:

1. $BaC{l}_{2}andNaOH$
2. $ZnS{O}_{4}andNaOH$
3. $CaC{O}_{3}andN{a}_{2}S{O}_4$
4. $BaC{l}_{2}andN{a}_{2}S{O}_4$

Q.

$Pb{O}_2$ is

1. Basic

2. Acidic

3. Neutral

4. Amphoteric