HARD
11th CBSE
IMPORTANT
Earn 100

What is a limiting reagent? Explain with a suitable example.

Important Questions on Some Basic Concepts of Chemistry

HARD
11th CBSE
IMPORTANT
Briefly explain the importance of chemistry in our daily life.
HARD
11th CBSE
IMPORTANT
Define ‘matter’. Briefly described the physical as well as chemical classification of matter.
HARD
11th CBSE
IMPORTANT
Define Element, Compound and Mixture. What are homogenous and heterogeneous mixtures ? Give one example of each of the homogeneous mixture in the gaseous phase, liquid phase and solid phase.
HARD
11th CBSE
IMPORTANT
List the main points of difference between a compound and a mixture.
HARD
11th CBSE
IMPORTANT
What is the latest and the most scientific system of units ? What are the seven basic units in this system ? Area, Volume, Density, Speed, Acceleration, Force, Pressure and Energy (or Work).
HARD
11th CBSE
IMPORTANT
What do you understand by 'significant figures' ? What are the rules for determining the number of significant figures? Illustrate with suitable examples.
MEDIUM
11th CBSE
IMPORTANT
 What do you understand by ‘Rounding off’ ?
 
MEDIUM
11th CBSE
IMPORTANT
What is the rule for determining the number of significant figures in answers involving addition or subtraction. Explain with a suitable example.