Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 42

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Earn 100

$124 g$ of $P_{4}$ will contain which of the following:
(1) $4$ atoms of Phosphorus
(2) $4 N_{A}$ atoms of Phosphorus
(3) $Na$ molecules of Phosphorus
(4) $1$ molecule of Phosphorus

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Important Questions on Some Basic Concepts of Chemistry

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 43

The total number of protons in

63 mg {HNO}_{3}

is:

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 44

A gaseous mixture contains oxygen and sulphur dioxide in the ratio of

1 : 4

by mass. Therefore, the ratio of their respective number of molecules is:

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 45

1

mole of

C_{2} H_{6}

contains:

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 46

Equal mass of

O_{2}

and

O_{3}

gases contain the same number of:

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 47

Sulphur exist in different allotropic forms like

S_{2}, S_{6}

and

S_{8}

etc. If equal moles of these three forms are taken in separate containers, then the ratio of number of atoms present in them respectively is:

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 48

The charge on

1

gram of

{Al}^{3 +}

ions is :

(e = electronic charge)

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 49

From

392 mg

of

H_{2} {SO}_{4}, 1.204 \times 10^{21}

molecules of

H_{2} {SO}_{4}

are removed. How many moles of

H_{2} {SO}_{4}

are left:

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Alpha Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>Exercise 1>Q 50

The maximum

%

of

N

is found in: