NCERT Exemplar Chemistry - Class 11>Chapter 1 - Some Basic Concepts of Chemistry>Multiple Choice Questions (Type-I)>Q 4

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If $500 ml$ of a $5 M$ solution is diluted to $1500 ml$ , what will be the molarity of the solution obtained?

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Important Questions on Some Basic Concepts of Chemistry

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NCERT Exemplar Chemistry - Class 11>Chapter 1 - Some Basic Concepts of Chemistry>Multiple Choice Questions (Type-I)>Q 5

The number of atoms present in one mole of an element is equal to Avogadro number. Which of the following element contains the greatest number of atoms?

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NCERT Exemplar Chemistry - Class 11>Chapter 1 - Some Basic Concepts of Chemistry>Multiple Choice Questions (Type-I)>Q 6

If the concentration of glucose

(C_{6} H_{12} O_{6})

in blood is

0.9 g L^{- 1}

. What will be the molarity of glucose in blood?

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NCERT Exemplar Chemistry - Class 11>Chapter 1 - Some Basic Concepts of Chemistry>Multiple Choice Questions (Type-I)>Q 8

One mole of any substance contains

6.022 \times 10^{23}

atoms/ molecules. Number of molecules of

H_{2} {SO}_{4}

present in

100 mL

of

0.02 M H_{2} {SO}_{4}

solution is ______.

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NCERT Exemplar Chemistry - Class 11>Chapter 1 - Some Basic Concepts of Chemistry>Multiple Choice Questions (Type-I)>Q 10

The empirical formula and molecular mass of a compound are

{CH}_{2} O

and

180 g

respectively. What will be the molecular formula of the compound?

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NCERT Exemplar Chemistry - Class 11>Chapter 1 - Some Basic Concepts of Chemistry>Multiple Choice Questions (Type-I)>Q 15

Which of the following statements indicates that law of multiple proportion is being followed.

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NCERT Exemplar Chemistry - Class 11>Chapter 1 - Some Basic Concepts of Chemistry>Multiple Choice Questions (Type-II)>Q 16

One mole of oxygen gas at STP is equal to _____.

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NCERT Exemplar Chemistry - Class 11>Chapter 1 - Some Basic Concepts of Chemistry>Multiple Choice Questions (Type-II)>Q 17

Sulphuric acid reacts with sodium hydroxide as follows :

$H_{2} {SO}_{4} + 2 NaOH \to {Na}_{2} {SO}_{4} + 2 H_{2} O$

When $1 L$ of $0.1 M$ sulphuric acid solution is allowed to react with $1 L$ of $0.1 M$ sodium hydroxide solution, the amount of sodium sulphate formed and its molarity in the solution obtained is

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NCERT Exemplar Chemistry - Class 11>Chapter 1 - Some Basic Concepts of Chemistry>Multiple Choice Questions (Type-II)>Q 18

Which of the following pairs have the same number of atoms?