Friction: 8th Class NCERT CBSE Science Chapter 12 Question: What is friction? Answer: Friction is a force that slows down moving objects or prevents stationary objects from moving. Question: On what principle do ball bearings work? Answer: Ball bearing works on the principle of rolling friction. Ball bearing contains steel balls …

Resources: 8th Class NCERT CBSE Social Science (Geography) Chapter 01 Question: What is the condition for a substance to be called a resource? Answer: A substance needs to have some utility to be called a resource. Question: What do you understand by the word “utility”? Answer: If a substance can …

Garbage In Garbage Out – 6th Class NCERT CBSE Science Chapter 16 Question: Distinguish between bio-degradable and non bio-degradable. Answer: Biodegradable waste: Waste that will decay and mix with soil. Microorganisms can convert this waste into simpler from. Peels, meat, leaves are the example. Non biodegradable waste: Waste that will not decay …

Air Around Us – 6th Class NCERT CBSE Science Chapter 15 Question: What is the composition of air? or Write a short note on the composition of air. Answer: Air is mixture of nitrogen, oxygen, carbon dioxide, water vapour and a few other gases. Some dust particles may also be present in it. …

Water – 6th Class NCERT CBSE Science Chapter 14 Question: Fill up the blanks in the following: The process of changing of water into its vapour is called ________ . The process of changing water vapour into water is called ________ . No rainfall for a year or more may lead to …

NCERT 6th Class (CBSE) Science: Fun with Magnets – Quiz 19 Multiple Choice Questions related to NCERT 6th Class (CBSE) Science: Fun with Magnets – Quiz: Using a compass is better as stars are only visible at night and sometimes they are not seen at night due to pollution and …

Light, Shadows and Reflection – 6th Class NCERT CBSE Science Chapter 11 Question: We see the sun rising 8 1/4 minutes after it has risen. Why? Answer: The speed of light is 3 lakh per second. The sun’s raise take time to reach on earth. Question: Name two sources of light and two …

Body Movements – 6th Class NCERT CBSE Science Chapter 08 Question: Fill in the blanks: Joints of the bones help in the _________ of the body. A combination of bones and cartilages forms the _________ of the body. The bones at the elbow are joined by a _________ . The contraction of …

Changes Around Us – 6th Class NCERT CBSE Science Chapter 06 Question: Breaking of tumbler and burning of paper are change in which we cannot get back the original substances what is the difference between these two changes? Answer: Breaking of glass tumbler is physical change as no new substance has formed and the …

Separation of Substances – 6th Class NCERT CBSE Science Chapter 05 Question: Why do we need to separate different components of a mixture? Give two examples. Answer: Among different components of mixture there are many substances which are harmful or not useful for us. To remove these harmful or unuseful components we need …