Normality

Q. What is the molarity of $H_{2}S{O}_4$ solution that has a density of $1.84{\text{g cc}}^{-1}$ and contains 98% by mass of $H_{2}S{O}_4$? (Given atomic mass of S = 32 amu)

1. $4.18M$
2. $8.14M$
3. $18.4M$
4. $18M$

Q. What is the normality of a 1 M solution of $H_{3}P{O}_4$

1. 3.0 N
2. 0.5 N
3. 1.0 N
4. 2.0 N

Q.

0.16 g of dibasic acid required 25 ml of decinormal NaOH solution for complete neutralisation. The molecular weight of the acid will be

1. 256
2. 32
3. 64
4. 128

Q.

0.16 g of dibasic acid required 25 ml of decinormal NaOH solution for complete neutralisation. The molecular weight of the acid will be.

1. 32

2. 64

3. 128

4. 256

Q. $0.5g$ mixture of $K_{2}C{r}_2{O}_7$ and $KMn{O}_4$ was treated with an excess of $KI$ in acidic medium. Iodine liberated required $100c{m}^3$ of $0.15N$ sodium thiosulphate solution for titration. Find the percentage amount of each in the mixture.

Q. The catalyst used in Bosch process of manufacture of $H_2$ is :

1. finely divided $Ni$
2. $V_2{O}_5$
3. $Pb$
4. ${Fe}_2{O}_3+{Cr}_2{O}_3$

Q. How many g of a dibasic acid (Mol. wt. = 200)should be present in 100 ml of its aqueous solution to give decinormal strength

1. 1 g
2. 2 g
3. 20 g
4. 10 g

Q. Sulphur forms two chlorides $S_{2}C{l}_2$ and ${SCl}_2$ . The equivalent mass of sulphur in ${SCl}_2$ is $16.$ The equivalent weight of sulphur in $S_{2}C{l}_2$ is:

1. $8$
2. $16$
3. $32$
4. $64$

Q.

5 ml of N HCl, 20 ml of $N/2H_{2}S{O}_4$ and 30 ml of $N/3HN{O}_3$ are mixed together and volume made to one litre. The normality of the resulting solution is

1. $\frac{N}{5}$
2. $\frac{N}{20}$
3. $\frac{N}{10}$
4. $\frac{N}{40}$

Q. 50 mL of 1 M HCl, 100 mL of 0.5 M $HN{O}_3,$ and x mL of 5 M $H_{2}S{O}_4$ are mixed together and the total volume is made upto 1.0 L with water. 100 mL of this solution exactly neutralises 10 mL of M/3 $A{l}_2(C{O}_3{)}_3.$ Calculate the value of x:___

Q. Formula of chromic acid is $H_{2}Cr{O}_4$. Formula of divalent metal chromate is:

1. $MCr{O}_4$
2. $M_{2}Cr{O}_4$
3. $M_2(Cr{O}_4{)}_3$
4. $M_{3}Cr{O}_4$

Q.

The ratio of the molar amounts of $H_{2}S$ needed to precipitate the metal ions from $20mL$ each of 1M $Cd(N{O}_3{)}_2$ and 0.5 M $CuS{O}_4$ is

1. 1 : 1
2. 2 : 1
3. 1 : 2
4. Indefinite

Q. The solution of sulphuric acid contains 80% by weight $H_{2}S{O}_4$. Specific gravity of this solution is 1.71. Its normality is about

1. 18
2. 1
3. 27.9
4. 10

Q. A solution containing $4.2g$ of $KOH$ and $Ca(OH{)}_2$ is neutralised by an acid. If it consumes $0.1gramequivalents$ of the acid, calculate the composition of the sample.

Q. $25.0mL$ of an unknown diprotic acid is neutralized by titration with $5.00mL$ of $0.100MNaOH$. What is the molar concentration of the diprotic acid?

1. $0.0050M$
2. $0.010M$
3. $0.015M$
4. $0.020M$

Q. How many grams of a dibasic acid (mol. weight 200 ) should be present in 100 ml of the aqueous solution to give the strength of 0.1 N?

1. 20 g
2. 10 g
3. 2 g
4. 1 g

Q. The number of hydroxide ions in 10 ml of an aqueous solution with $pOH$ $=$ ${10}^{-13}$ is:

1. ${10}^{13}$
2. $6.023\times {10}^8$
3. $6.023\times {10}^{13}$
4. $6.023\times {10}^{10}$

Q. An aqueous solution of 6.3 g oxalic acid dihydrate is made up to 250 mL. The volume of 0.1 N NaOH required to completely neutralise 10 mL of this solution is

1. 40 mL
2. 20 mL
3. 10 mL
4. 4 mL

Q.

30 ml of acid solution is neutralized by 15 ml of a 0.2 N base. The normality of the acid solution is

1. 0.1 N
2. 0.15 N
3. 0.4 N
4. 0.3 N

Q. To neutralise 20 ml of $\frac{M}{10}$ sodium hydroxide, the volume of $\frac{M}{20}$ hydrochloric acid required is

1. 20 ml
2. 10 ml
3. 15 ml
4. 40 ml

Q.

Hydrochloric acid solutions A and B have concentration of 0.5 N and 0.1 N respectively. The volume of solutions A and B required to make 2 litres of 0.2 N hydrochloric are

1. 1.0 l of A + 1.0 l of B

2. 0.75 l of A + 1.25 l of B

3. 0.5 l of A + 1.5 l of B

4. 1.5 l of A + 0.5 l of B

Q. $H_2{C}_2{O}_4$ and $NaH{C}_2{O}_4$ behave as acids as well as reducing agents. Which are correct statements?

1. Equivalent weight of $H_2{C}_2{O}_4$ and $NaH{C}_2{O}_4$ are equal to their molecular weights when behaving as reducing agents.
2. $100$ mL of $1M$ solution of each is neutralised by equal volumes of $1M$ $Ca(OH{)}_2$.
3. $100$ mL of $1N$ solution of each is neutralised by equal volumes of $1N$ $Ca(OH{)}_2$.
4. $100$ mL of $1M$ solution of each is oxidised by equal volumes of $1M$ $KMn{O}_4$.

Q. $200c{m}^3$ of a solution of a dibasic acid contains $1.512g$ of the acid and the normality of the solution is $\mathrm{0.12.}$ Calculate the equivalent mass.

Q. What do you mean by Normal solution ?