Chemistry Crash Course NDA & NA EE>Chapter 3 - Atoms and Molecules>Exercise 1>Q 8

EASY

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IMPORTANT

Earn 100

The mass of a molecule of water is:

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Important Questions on Atoms and Molecules

EASY

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IMPORTANT

Chemistry Crash Course NDA & NA EE>Chapter 3 - Atoms and Molecules>Exercise 1>Q 9

A compound

X_{2} O_{3}

contains

31.58 %

oxygen by weight. The atomic mass of

X

is ______.

EASY

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IMPORTANT

Chemistry Crash Course NDA & NA EE>Chapter 3 - Atoms and Molecules>Exercise 1>Q 10

The law of constant proportion was proposed by

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IMPORTANT

Chemistry Crash Course NDA & NA EE>Chapter 3 - Atoms and Molecules>Exercise 1>Q 11

The law of multiple proportions was proposed by

EASY

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IMPORTANT

Chemistry Crash Course NDA & NA EE>Chapter 3 - Atoms and Molecules>Exercise 1>Q 12

Two elements

A

and

B

combine to form two compounds in which

a_{1} g

of

A

combines with

b_{1}

and

b_{2} g

of

B

, respectively. According to the law of multiple proportions

EASY

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IMPORTANT

Chemistry Crash Course NDA & NA EE>Chapter 3 - Atoms and Molecules>Exercise 1>Q 13

Law of combining volumes was given by

EASY

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IMPORTANT

Chemistry Crash Course NDA & NA EE>Chapter 3 - Atoms and Molecules>Exercise 1>Q 14

According to which one of the following laws it is indicated that when two or more gases react with one another, their volume bears a simple ratio?

EASY

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IMPORTANT

Chemistry Crash Course NDA & NA EE>Chapter 3 - Atoms and Molecules>Exercise 1>Q 15

In the reaction, $N_{2} + 3 H_{2} ⟶ 2 {NH}_{3},$ ratio by volume of $N_{2}, H_{2}$ and ${NH}_{3}$ is $1 : 3 : 2 .$ This suggested law is

EASY

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IMPORTANT

Chemistry Crash Course NDA & NA EE>Chapter 3 - Atoms and Molecules>Exercise 1>Q 16

Which of the following laws deals with the mass of reactants and products, during a chemical reaction?