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

Important Questions on Some Basic Concepts of Chemistry

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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?

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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 

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

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

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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?

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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

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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 ${\mathrm{CaCO}}_3\left(\mathrm{s}\right)$?

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 39

The volume of ${\mathrm{O}}_2$ at $\mathrm{STD}$ required for the complete combustion of $4 \mathrm{g} {\mathrm{CH}}_4$ is 

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 40

$0.9 \mathrm{g} \mathrm{Al}$ reacts with $\mathrm{dil}. \mathrm{HCL}$ to give ${\mathrm{H}}_2$. The volume of ${\mathrm{H}}_2$ evolved at $\mathrm{STP}$ is (Atomic weight of $\mathrm{AI}=27$)