MEDIUM
9th CBSE
IMPORTANT
Earn 100

When 6 grams of hydrogen gas was burnt with 48 grams of oxygen, 54 grams of water was produced. In another experiment when electric current was passed through 36 grams of water, 4 grams of hydrogen and 32 grams of oxygen were formed.

Calculate the mass ratio of hydrogen and oxygen formed when electric current was passed through water. 

Important Questions on Atoms and Molecules

EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Self Test Exercises>Q 2

When 6 grams of hydrogen gas was burnt with 48 grams of oxygen, 54 grams of water was produced. In another experiment when electric current was passed through 36 grams of water, 4 grams of hydrogen and 32 grams of oxygen were formed.

Write the name of the law of chemical combination which is verified by these experiments.

EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 1
Write the names of the two laws of chemical combinations.
EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 2
State and explain the law of conservation of mass.
EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 3
State the law of constant proportions. This law is also called the law of definite composition. Is it true or false?
EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 4
Write the names of the two laws of chemical combinations which lead to the idea of atoms.
EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 5
State the law of constant composition.
MEDIUM
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 6
Write the main postulates of Dalton's atomic theory.
EASY
9th CBSE
IMPORTANT
Secondary Chemistry>Chapter 3 - Atoms and Molecules>Problems for Proficiency>Q 7
The type and number of atoms in a compound are _____ irrespective of source.