The mass of one molecule of water is approximately

Important Questions on Some Basic Concepts of Chemistry

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 31

Two elements $\mathrm{X}$ and $\mathrm{Y}$ (atomic mass of $\mathrm{X}=75, \mathrm{Y}=16$) combine to give a compound having $76\%$ of $\mathrm{X}$. The formula of the compound is

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 32

The percentage of nitrogen in ${\mathrm{HNO}}_3$ is

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 33

What is the ratio of empirical formula mass to molecular formula mass of benzene?

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 34

The compound in which mass percentage of carbon is $75\%$ and that of hydrogen is $25\%$ is 

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 35

Identify the molecule having empirical formula ${\mathrm{CH}}_2\mathrm{O}$

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 36

$8 \mathrm{g} {\mathrm{H}}_2$ and $32 \mathrm{g} {\mathrm{O}}_2$ is allowed to react to from water then which of the following statement is correct?

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 37

Equal volum of ${\mathrm{N}}_2$ and ${\mathrm{H}}_2$ react to form ammonia under suitable condition then the limiting reagent is

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 38

How many grams of calcium oxide is obtained on heating $100 \mathrm{g}$ of ${\mathrm{CaCO}}_3\left(\mathrm{s}\right)$?