MEDIUM
8th West Bengal Board
IMPORTANT
Earn 100

On what principle freezing mixture works?

Important Questions on Sample Questions

MEDIUM
8th West Bengal Board
IMPORTANT
Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 5
After the sunset, we can still see the sun for a while. What property of light is responsible for the incident?
EASY
8th West Bengal Board
IMPORTANT
Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 5
What will be the weight of a body of 10 kg mass g=9.8 m s-2?
EASY
8th West Bengal Board
IMPORTANT
Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 5
What is the mass of a body weighing 25 N on the earth surface?
EASY
8th West Bengal Board
IMPORTANT
Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 5
When glass is rubbed with 'X' material, X-becomes positively charged. Then which of the two materials gain electrons and which one releases electrons?
EASY
8th West Bengal Board
IMPORTANT
Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 5
Name two solid bodies which do not melt when they are heated?
EASY
8th West Bengal Board
IMPORTANT
Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 5
Why is it necessary to mention pressure while talking about boiling point of a liquid?
MEDIUM
8th West Bengal Board
IMPORTANT
Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 5
Write down two useful applications of exothermic chemical reactions.
MEDIUM
8th West Bengal Board
IMPORTANT
Environment and Science Class 8>Chapter 12 - Sample Questions>Sample Questions>Q 5
Draw the simple structures of hydrogen sulphide and carbon tetrachloride molecules (Valency of carbon and sulphur are 4 and 2 respectively; H and Cl are monovalent)