Normality

Q.

What are molarity, molality, and normality? Explain with an example.

Q. The normality of 10% (w/v) acetic acid is:

1. N
2. 10 N
3. 1.67 N
4. 0.83 N

Q.

Calculate the atomic mass (average) of chlorine using the following data:

	% Natural Abundance	Molar Mass
35Cl	75.77	34.9689
37Cl	24.23	36.9659

Q.

An aqueous solution of $6.3g$oxalic acid dihydrate is made up to $250mL$. The volume of $0.1N$ $\mathrm{NaOH}$ required to completely neutralize 10 mL of this solution is:

1. $4mL$

2. $10mL$

3. $20mL$

4. $40mL$

Q. $1\text{L}$ of a $\frac{N}{2}HCl$ solution is heated in a beaker. It was observed that when the volume of the solution was reduced to $600\text{mL}$, $3.25\text{g}$ of $HCl$ is lost. Calculate the normality of the new solution.

1. $1.70\text{N}$
2. $0.685\text{N}$
3. $0.342\text{N}$
4. $0.171\text{N}$

Q. Arrange the following in decreasing order of their acidic strength and give reason for your answer. $C{H}_{3}C{H}_{2}OH,C{H}_{3}COOH,ClC{H}_{2}COOH,FC{H}_{2}COOH,C_6{H}_{5}C{H}_{2}COOH.$

Q. To neutralize completely 20 mL of 0.1 M aqueous solution of phosphorous acid $\left(H_{3}P{O}_3\right).$ The volume of 0.1 M aqueous KOH solution required is :

1. 40 mL
2. 20 mL
3. 60 mL
4. 10 mL

Q. The number of ions formed on dissolving one molecule of $FeS{O}_4(N{H}_4{)}_{2}S{O}_4.6H_{2}O$ is/are

1. 6
2. 3
3. 5
4. 4

Q. A storage battery contains a solution of $H_{2}S{O}_4$ 30% by weight. Find out Molarity?
(Given density of solution $=1.2g/c{m}^3$)

1. 2.07 M
2. 5.00 M
3. 4.67 M
4. 3.67 M

Q. Calculate Molarity of a $63\%w/wHN{O}_3$ solution if density is $1.4g/mL$ .

1. $14M$
2. $12M$
3. $10M$
4. $8M$

Q.

The volumes of $4\mathrm{N}\mathrm{HCl}$ and $10\mathrm{N}\mathrm{HCl}$ required to make $1L$ of $6\mathrm{N}\mathrm{HCl}$ are:

1. $0.75L$of $10\mathrm{N}\mathrm{HCl}$and $0.25L$ of $4\mathrm{N}\mathrm{HCl}$

2. $0.25L$ of $4\mathrm{N}\mathrm{HCl}$and $0.75L$ of $10\mathrm{N}\mathrm{HCl}$

3. $0.67L$of $4\mathrm{N}\mathrm{HCl}$and $0.33L$of $10\mathrm{N}\mathrm{HCl}$

4. $0.80L$ of $4\mathrm{N}\mathrm{HCl}$ and $0.20L$ of $10\mathrm{N}\mathrm{HCl}$

Q.

Following compounds are given

Which of the above compounds on being warmed with iodine solution and NaOH will give Iodoform?

1. I, III and IV

2. Only II

3. I, II and III

4. I and II

Q. Calculate normality of the solution if $5.3g$ of solid $N{a}_{2}C{O}_3$ is dissolved to make $250mL$ of the solution.

1. $0.1N$
2. $0.4N$
3. $0.75N$
4. $1N$

Q. $25\text{mL}$ of a solution of barium hydroxide on titration with a $0.1\text{M}$ solution of $HCl$ gave a titre value of $35\text{mL}$. The molarity of the barium hydroxide solution is:

1. $0.07\text{M}$
2. $0.14\text{M}$
3. $0.28\text{M}$
4. $0.35\text{M}$

Q. What volume of 0.1 M $KMn{O}_4$ is needed to oxidize 100 mg of $Fe{C}_2{O}_4$ in acid solution?

1. 8.2 mL
2. 10.2 mL
3. 4.6 mL
4. 4.1 mL

Q.

What is the normality of a $KMn{O}_4$ solution in which $15.8g$ of $KMn{O}_4$ is present in $250mL$ solution and the solution is used as an oxidant, where ${Mn{O}_4}^{-}$ is reduced to ${Mn}^{2+}$ ? (Given: molar mass of $KMn{O}_4=158gmo{l}^{-1}$ )

1. 0.4 N

2. 20 N

3. 2 N

4. 40 N

Q. Which one of the following act as a self-indicators ?

1. Potassium dichromate
2. Phenolphthlein
3. (a) and (b) above.
4. Potassium permanganate

Q. Which of the following is not true regarding Henry's law constant?

1. It has same unit as that of pressure
2. It decreases with increase in temperature
3. It decreases with increase in solubility
4. Different gas-liquid system have different $K_H$​

Q. Arrange the following in the decreasing order of their acidic strengths. Explain the arrangement. $C_6{H}_{5}COOH,FC{H}_{2}COOH,N{O}_{2}C{H}_{2}COOH$

Q. Mark the correct order of decreasing acid strength of the following compounds.

a.
b.
c.
d.
e.

1. $b>d>a>c>e$
2. $e>d>b>a>c$
3. $b>d>c>a>e$
4. $e>d>c>b>a$
5. $d>e>c>b>a$

Q. Which of the following is the correct realtion between Molarity, Normality and n-factor $\left(n_f\right)$?

1. $\text{Molarity}=\text{Normality}\times \text{n-factor}$
2. $\text{Normality}\times \text{Molarity}=\text{n-factor}$
3. $\text{Normality}=\text{Molarity}\times \text{n-factor}$
4. None of the above

Q.

Is molecular mass , atomic mass , gram molecular mass, gram atomic mass one mole.

(Like, is 12amu C one mole particles)

Q.

How much water should be mixed with 12 ml of alcohol so as to obtain 12% of alcohol solution?

Q. Order of magnitude of density of Uranium nucleus :

(1)10^20 kg/m^3
(2)10^17 kg/m^3
(3)10^14 kg/m^3
(4)10^11 kg /m^3

Q. When $10mL$ of an aqueous solution of $F{e}^{2+}$ ions was titrated in the presence of dil $H_{2}S{O}_4$ using diphenylamine indicator, $15mL\text{of}$ $0.02M$ solution of $K_{2}C{r}_2{O}_7$ was required to get the end point. The molarity of the solution containing $F{e}^{2+}$ ions is $x\times {10}^{-2}M$. The value of $x$ is ___. (Nearest integer)

Q. A storage battery contains a solution of $H_{2}S{O}_4$ 30% by weight. Find out molality of solution?
(Given, density of solution $=1.2g/c{m}^3$)

1. 2.07 m
2. 6.07 m
3. 4.37 m
4. 3.37 m

Q. How many grams of $NaOH$ is required to prepare 1500 mL of a 0.1 N $NaOH$ solution?

1. 10 g
2. 6 g
3. 8 g
4. 15 g

Q. The molar concentration of chloride ion in a solution made by addding $300\text{ml}$ of $3.0\text{M}KCl$ solution to a $200\text{ml}$ of $4.0{\text{M BaCl}}_2$ solution will be:

1. $5.0\text{M}$
2. $1.8\text{M}$
3. $1.6\text{M}$
4. None of these

Q.

A 100 mL solution of 0.1 N HCl was titrated with 0.2 N NaOH solution. The titration was discontinued after adding 30 ml of NaOH solution. The titration was completed by adding 0.25 N KOH solution. The volume of KOH required for completing the titration is:

1. 70 ml

2. 32 ml

3. 35 ml

4. 16 ml

Q. When $100\text{mL}1\text{N}NaOH$ solution and $10\text{mL}$ of $10\text{N}$ sulphuric acid solution are mixed together, the resulting solution will be:

1. Acidic
2. Neutral
3. Basic
4. Can’t say