MEDIUM
11th Maharashtra Board
IMPORTANT
Earn 100

State and explain the law of conservation of mass.
 

Important Questions on Some Basic Concepts of Chemistry

MEDIUM
11th Maharashtra Board
IMPORTANT
State the law of multiple proportions.
EASY
11th Maharashtra Board
IMPORTANT

Give one example of homogeneous mixture.

EASY
11th Maharashtra Board
IMPORTANT

Give one example of heterogeneous mixture.

EASY
11th Maharashtra Board
IMPORTANT

Give one example of element.

EASY
11th Maharashtra Board
IMPORTANT
Give one example of compound.
EASY
11th Maharashtra Board
IMPORTANT
What is the ratio of molecules in 1 mole of NH3 and 1 mole of HNO3.
MEDIUM
11th Maharashtra Board
IMPORTANT

Calculate number of moles of hydrogen in 0.448 litre of hydrogen gas at STP.

EASY
11th Maharashtra Board
IMPORTANT

The mass of an atom of hydrogen is 1.008 u. What is the mass of 18 atoms of hydrogen.