M K Verma Solutions for Chapter: Some Basic Concepts of Chemistry, Exercise 1: TOPICWISE QUESTIONS

A $6 \mathrm{L}$ mixture of methane and propane, on complete combustion, gives $7 \mathrm{L}$ of ${\mathrm{CO}}_2$. What is the composition of the mixture?

A mixture of $\mathrm{CO}$ and ${\mathrm{CO}}_2$ contains $60\% \mathrm{CO}$ and the rest is ${\mathrm{CO}}_2$. Two liters of this mixture is passed over red-hot charcoal. What is the volume after the reaction?

$23 \mathrm{g}$ of ethanol $\left({\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}\right)$ on reaction with ethanoic acid $\left({\mathrm{CH}}_3\mathrm{COOH}\right)$ forms $44 \mathrm{g}$ of ethyl ethanoate $\left({\mathrm{CH}}_3{\mathrm{COOC}}_2{\mathrm{H}}_5\right)$ and some weight of water. What is the percentage yield of the reaction?

$1$ mole of ${}_7{}^{14}\mathrm{N}^{-3}$ ions contains:

a. $7\times 6.023\times {10}^{23}$ electrons.

b. $7\times 6.023\times {10}^{23}$ protons.

c. $10\times 6.023\times {10}^{23}$ electrons.

d. $14\times 6.023\times {10}^{23}$ protons.

Which of the following set of compounds will contain an equal number of total electrons?

Consider the following reaction:

$\mathrm{Zn}+2\mathrm{HCl}\stackrel{}{\to }{\mathrm{ZnCl}}_2+{\mathrm{H}}_2$

If$0.3$ mole of $\mathrm{Zn}$ reacts with $0.52$ mole of $\mathrm{HCl}$, which is incorrect regarding the above reaction?

$1$ mole of ${\mathrm{N}}_2$ and $44.8 \mathrm{L}$ of ${\mathrm{H}}_2$ at $\mathrm{STP}$react to form which of the following?

Water, on electrolysis, gives ${\mathrm{H}}_2$ and ${\mathrm{O}}_2$. How much weight of the water should be electrolysed to get$33.6$ liters of a gaseous mixture of ${\mathrm{H}}_2$ and ${\mathrm{O}}_2$ at $\mathrm{NTP}$?