NCERT Solutions for Chapter: Some Basic Concepts of Chemistry, Exercise 1: Multiple Choice Questions (Type-II)

One mole of oxygen gas at STP is equal to _____.

Sulphuric acid reacts with sodium hydroxide as follows :

${\mathrm{H}}_2{\mathrm{SO}}_4+2\mathrm{NaOH}\to {\mathrm{Na}}_2{\mathrm{SO}}_4+2{\mathrm{H}}_2\mathrm{O}$

When $1\mathrm{L}$ of $0.1\mathrm{M}$ sulphuric acid solution is allowed to react with $1\mathrm{L}$ of $0.1\mathrm{M}$ sodium hydroxide solution, the amount of sodium sulphate formed and its molarity in the solution obtained is

Which of the following pairs have the same number of atoms?

Which of the following solutions have the same concentration?

$16 \mathrm{g}$ of oxygen has same number of molecules as in

Which of the following terms are unitless?

One of the statements of Dalton’s atomic theory is given below:
“Compounds are formed when atoms of different elements combine in a fixed ratio”

Which of the following laws is not related to this statement?