The empirical formula of Acetylene is .

Important Questions on Chemical Calculations

EASY

10th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 3 - Chemical Calculations>EXERCISE>Q 3

Molecular mass of a gas = $\mathrm{n} \times$ _____ formula mass.

EASY

10th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 3 - Chemical Calculations>EXERCISE>Q 4

${\mathrm{H}}_2 \left(\mathrm{g}\right)$ reacts with ${\mathrm{N}}_2 \left(\mathrm{g}\right)$ to produce gaseous ammonia. The ratio of their volume is _____.

EASY

10th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 3 - Chemical Calculations>EXERCISE>Q 5

$100 \mathrm{g}$ of calcium carbonate produces _____ $\mathrm{L}$ of ${\mathrm{CO}}_2$ at STP.

EASY

10th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 3 - Chemical Calculations>EXERCISE>Q 6

$40 \mathrm{g}$ $\mathrm{NaOH}$ neutralises _____ $\mathrm{g}$ sulphuric acid completely.

EASY

10th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 3 - Chemical Calculations>EXERCISE>Q 7

The number of atoms presents in one molecule of an element is called its _____.

EASY

10th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 3 - Chemical Calculations>EXERCISE>Q 1

The empirical formula and the molecular formula of carbon dioxide are the same.

EASY

10th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 3 - Chemical Calculations>EXERCISE>Q 2

Vapour density of carbon dioxide at $25 °\mathrm{C}$ and $1 \mathrm{atm}$ is $22$. The vapour density at $50 °\mathrm{C}$ and $1 \mathrm{atm}$ is $50$.

EASY

10th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 3 - Chemical Calculations>EXERCISE>Q 3

When $58.5 \mathrm{g}$ $\mathrm{NaCl}$ reacts with $170 \mathrm{g}$ silver nitrate the amount of precipitated $\mathrm{AgCl}$ is $193.5 \mathrm{g}$.