Basic Lead Carbonate

Q. Which of the following pairs do not show the inert-pair effect ?

1. $Tl$ and $Pb$
2. $Sn$ and $Bi$
3. $Sn$ and $Pb$
4. $Si$ and $Ge$

Q. Correct sequence of $CO$ bond order in given compounds is:
$\left(P\right)Fe(CO{)}_5$
$\left(Q\right)CO$
$\left(R\right)H_{3}B\leftarrow CO$
$\left(S\right)\left[Mn\right(CO{)}_5{]}^{-}$

1. $R>Q>P>S$
2. $S>P>R>Q$
3. $Q>S>P>R$
4. $P>R>S>Q$

Q. The heat of hydration and the basic character of halide ions follow the order:

1. $C{l}^{-}>F^{-}>Br->I^{-}$
2. $F^{-}>C{l}^{-}>B{r}^{-}>I^{-}$
3. $I^{-}>B{r}^{-}>F^{-}>C{l}^{-}$
4. $I^{-}>B{r}^{-}>C{l}^{-}>F^{-}$

Q.

Lead pipes are not suitable for drinking water because

1. A layer of lead dioxide is deposited over pipes

2. Lead reacts with air to form litharge

3. Lead forms basic lead carbonate

4. Lead reacts with water containing air to form Pb(OH)₂

Q. Which of the following reagent can distinguish between aldehydes and ketones?

1. Fehling's Solution
2. Fenton's Reagent
3. Grignard Reagent
4. $H_{2}S{O}_4$ solution

Q. Which of the following compound is not coloured ?

1. $N{a}_2\left[CuC{l}_4\right]$
2. $N{a}_2\left[CdC{l}_4\right]$
3. $F{e}_4\left[Fe\right(CN{)}_6{]}_3$
4. $N{a}_{2}Cr{O}_4$

Q. Which of the alkaline earth metal halides given below is essentially covalent in nature ?

1. $BeC{l}_2$
2. $MgC{l}_2$
3. $SrC{l}_2$
4. $CaC{l}_2$

Q. Distinguish between the following pairs of compounds using the test given within brackets. Dilute sulphuric acid and dilute hydrochloric acid [using barium chloride solution].

Q.

Which impurities are removed by the following reagents

(b) Lead nitrate solution

Q.

An aqueous solution of a salt (A) gives white precipitate (B) with sodium chloride solution. The filtrate gives a black precipitate. (C) When $H_{2}S$ is passed into it. Compound (B) dissolves in hot water and the solution gives a yellow precipitate (D) on treatment with sodium iodide. The compound (A) does not give any gas with dilute HCl but liberates a reddish brown gas on heating. Identify the compound (A) to (D).

1. $A=Pb(N{O}_3{)}_{2}B=PbC{l}_{2}C=PbSD=Pb{l}_2$

2. $A=PbS{O}_{3}B=PbC{l}_{2}C=PbClD=Pb{O}_2$

3. $A=Pb{l}_{2}B=PbOC=Pb{H}_{4}D=Pb(N{O}_3{)}_2$

4. $A=PbSB=PbC{l}_{2}C=Pb(N{O}_3{)}_{2}D=Pb{l}_2$

Q. In the brown ring test, the brown colour of the ring is due to:

1. Ferrous nitrate
2. Ferric nitrate
3. A mixture of $NO$ and $N{O}_2$
4. Nitrosoferrous sulphate

Q.

Lead pipes are not suitable for drinking water because

1. A layer of lead dioxide is deposited over pipes

2. Lead reacts with air to form litharge

3. Lead reacts with water containing air to form $Pb(OH{)}_2$

4. Lead forms basic lead carbonate

Q. Which of the following methods can be used for the preparation of anhydrous aluminium chloride?

1. Heating a mixture of alumina and coke in a current of dry chlorine
2. Passing dry HCl gas over heated aluminium powder
3. Heating $AlC{l}_3.6H_{2}O$
4. Passing dry chlorine over heated aluminium

Q. Chlorine water on standing loses its colour and forms :

1. $HOCl$ and $HOC{l}_2$
2. $HCl$ only
3. $HCl$ and $HCl{O}_2$
4. $HCl$ and $HOCl$

Q.

Basic Lead carbonate is also known as

1. White Lead

2. Red Lead

3. Sugar of Lead

4. Black Lead

Q. Why $HN{O}_3$ is not used in place of dil.$H_{2}S{O}_4$ to acidify the $KMn{O}_4$ solution in volumetric analysis?

Q.

Basic Lead carbonate is also known as

1. White Lead

2. Red Lead

3. Sugar of Lead

4. Black Lead

Q. In the complex $\left[CoC{l}_2\right(en{)}_2]Br$ the co-ordination number and oxidation state of cobalt are:

1. $6\text{and}+3$
2. $3\text{and}+3$
3. $4\text{and}+2$
4. $6\text{and}+1$

Q.

An aqueous solution of a salt (A) gives white precipitate (B) with sodium chloride solution. The filtrate gives a black precipitate. (C) When $H_{2}S$ is passed into it. Compound (B) dissolves in hot water and the solution gives a yellow precipitate (D) on treatment with sodium iodide. The compound (A) does not give any gas with dilute HCl but liberates a reddish brown gas on heating. Identify the compound (A) to (D).

1. $A=Pb(N{O}_3{)}_{2}B=PbC{l}_{2}C=PbSD=Pb{l}_2$

2. $A=PbS{O}_{3}B=PbC{l}_{2}C=PbClD=Pb{O}_2$

3. $A=Pb{l}_{2}B=PbOC=Pb{H}_{4}D=Pb(N{O}_3{)}_2$

4. $A=PbSB=PbC{l}_{2}C=Pb(N{O}_3{)}_{2}D=Pb{l}_2$

Q. Compound (B) is:

1. $PbS$
2. $Pb(N{O}_3{)}_2$
3. $PbC{l}_2$
4. $Pb{I}_2$

Q. A precipitate of _______ would be obtained when HCl is added to a solution of stannous sulphide (SnS) in yellow ammonium sulphide.

1. $SnS$
2. $Sn{S}_2$
3. $S{n}_2{S}_3$
4. None of these

Q. Pottasium acid oxalate, $K_2{C}_2{O}_4.3H_2{C}_2{O}_4.4H_{2}O$ can be oxidized by $KMn{O}_4$ in acid medium. Calculate the volume (in mL) of $0.1$ $MKMn{O}_4$ that reacts with one gram of the acid oxalate in acidic medium.

1. $20$
2. $40$
3. $23$
4. None of the above

Q. Peroxide effect can be checked by the addition of sufficient amount of:

1. diphenylamine
2. monophenylamine
3. triphenylamine
4. pentaphenylamine

Q. An aqueous solution of salt (A) gives a white crystalline precipitate (B) with NaCl solution. The filtrate gives a black precipitate (C) when $H_{2}S$ is passed through it. Compound (B) dissolves in hot water and the solution gives yellow precipitate (D) on treatment with potassium iodine and on cooling. The compound (A) does not give any gas with dilute HCl but liberates a reddish brown gas on heating. Compounds (A) to (D) are identified as:

Q. The complex $\left[Fe\right(H_{2}O{)}_s\left(NO\right){]}^{2+}$ is formed in the ring test for nitrate when freshly prepared $FeS{O}_4$ solution is added to aqueous solution of $N{O}_3^{-}$ followed by addition of conc. $H_2{S}_4$. The complex is formed by charge transfer, which of the following change occurs?

1. $F{e}^{3+}\to F{e}^{2+};NO\to N{O}^{+}$
2. $F{e}^{2+}\to F{e}^{+};NO\to N{O}^{+}$
3. $F{e}^{2+}\to F{e}^{3+};NO\to N{O}^{+}$
4. $F{e}^{2+}\to F{e}^{3+};N{O}^{+}\to NO$

Q. Sodium nitrite is a pale-yellow, crystalline solid that combines with aniline to form diazonium salts from which we get ?

1. Ink
2. Azo-dyes
3. Hydrazine
4. Paints

Q. Which of the following salts of thiosulphate are water soluble ?

1. Cupric thiosulphate
2. Silver thiosulphate
3. Ferric thiosulphate
4. Lead thiosulphate

Q. The formula of basic lead carbonate is ${\left(PbC{O}_3\right)}_x\cdot Pb{\left(OH\right)}_x$.
The value of $x$ is:

Q. Aniline when treated with $HN{O}_2$ and $HCl$ at $0^{\circ }C$ gives

1. phenol
2. none of these
3. nitrobenzene
4. diazo compound

Q. In preparation of alum from clays or bauxite, it is calcined and mixed with sulphuric acid heating gradually.

1. True
2. False