Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 11

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The percentage of hydrogen in water and hydrogen peroxide is $11.1$ and $5.9$ respectively. These figures illustrate

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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 12

Element

X

forms five stable oxides with oxygen of formula

X_{2} O, XO, X_{2} O_{3}, X_{2} O_{4}, X_{2} O_{5}

. The formation of these oxides explains

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 13

Which of the following represents Avogadro's hypothesis?

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 14

When $200 g$ of lime stone is strongly heated, it undergoes thermal decomposition to form $112 g$ of lime and unknown mass of carbon dioxide gas as

$\begin{matrix} {CaCO}_{3} & \to & CaO & + & {CO}_{2} \\ 200 g & 112 g & ? \end{matrix}$

What will be the mass of ${CO}_{2}$ formed ?

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 15

Carbon and oxygen react in ratio of

3 : 8

by mass of form

{CO}_{2}

. What weight of carbon should be used to react completely with

32 g

of oxygen?

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 16

Cu

forms two oxides cuprous and cupric oxides,which law can be proved by the weights of

Cu

and

O

?

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 17

The law of conservation of mass holds good for all of the following except -

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 18

Equal volume of different gases at any definite temperature and pressure have

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Gamma Question Bank for Medical Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE>Q 19

Which of the following pairs of compound illustrate law of multiple proportions?