Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 3

EASY

11th Odisha Board

IMPORTANT

Earn 100

How many calcium atoms are present in $10 g$ of ${CaCO}_{3}$ ?

Important Questions on Basic Concepts Atoms & Molecules

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 4

How many moles of hydrogen molecules are present in one mole of hydrogen peroxide?

(Write the final answer without units)

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 4

How many molecules of oxygen are present in one mole of sulphuric acid?

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 5

How many molecules are there in $90 gms$ of $H_{2} O$ ?

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 6

How many atoms are present in

49 gms

of sulphuric acid?

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 9

How many moles do

3 g

of water represent?

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 10

How many moles do

2 x 10^{22}

molecules of hydrogen represent ?

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 11

A piece of copper weighs

0.635 g

. How many atoms of copper does it contain?

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Chemistry Volume-1>Chapter 2 - Basic Concepts Atoms & Molecules>QUESTIONS>Q 12

Between

1

gram of water and

1

gram of methanol, which has more number of molecules ?