Science

Heat NCERT 7th Class CBSE Science Chapter 04 Question: In a mercury thermometer, the level of mercury rises when its bulb comes in contact with a hot object. What is the reason for this rise in the level of mercury? Answer: As the temperature increases, then expansion in mercury takes place which …

Fibre to Fabric NCERT 7th Class CBSE Science Chapter 03 Question: Name the sources of obtaining fibres. Answer: The sources of obtaining fibres are plants and animals. Question: Name some wool yielding animals. Answer: Wool yielding animals are sheep, yak, llama, alpaca, angora goat, angora rabbit and camel. Question: In which part …

Nutrition in Animals NCERT 7th Class CBSE Science Chapter 02 Question: What is the total number of teeth in an adult human? Answer: In an adult human, there are total 32 teeth. Nutrition in Animals NCERT – Question: Name the parts of the alimentary canal where water gets absorbed from undigested …

Nutrition in Plants 7th Class NCERT CBSE Science Chapter 01 Question: Why do organisms need to take food? Answer: All living organisms require food to survive. It gives them energy to perform various activities. All activities such as playing, running, walking, studying etc. require energy. The various components present in …

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 …

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 …