Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.2>Q 9

MEDIUM

JEE Main

IMPORTANT

Earn 100

Two substances $I$ and $II$ of carbon and oxygen have respectively $72.73 %$ and $47.06 %$ oxygen. Hence, they follow:

50% studentsanswered this correctly

Important Questions on Some Basic Concepts, Mole Concept and Stoichiometry

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.2>Q 10

H_{2} S

contains

94.11 %

sulphur;

{SO}_{2}

contains 50% oxygen and

H_{2} O

contains

11.11 %

hydrogen. Thus,

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IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.2>Q 11

CO, {CO}_{2}, C_{2} O_{3}

follow:

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.2>Q 12

Two oxides of metal contain

50 %

and

40 %

metal respectively. If the formula of the first oxide is

{MO}_{2}

, the formula of the second oxide will be:

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.2>Q 13

If isotopic distribution of

C^{12}

and

C^{14}

is

98.0 %

and

2.0 %

, respectively, then the number of

C^{14}

atoms in

12 g

of carbon sample will be:

EASY

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IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.2>Q 14

One of the statements of Dalton's atomic theory is given below: "Compounds are formed when atoms of different elements combine in a fixed ratio."

Which of the following laws is/are not related to this statement?

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IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.2>Q 15

Which of the statements are true?

EASY

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IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.2>Q 16

Which of the following statements are correct?

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 1 - Some Basic Concepts, Mole Concept and Stoichiometry>DPP 1.2>Q 17

Which of the statements are true about the law of chemical combination?