Q2.Energy crisis is a situation which arises when the
Answer : Option AExplaination / Solution:
Energy crisis create only when supply and demand situation in the country imbalance Demand for all commercial fuels is more than its supply.
Q3.A metal X on heating in nitrogen gas gives Y. Y on treatment with water gives a colourless gas which when passed through copper sulphate solution gives a blue colour. Y is
Answer : Option BExplaination / Solution: Mg3N2 reacts with water to evolve NH_3. Which reacts with copper ion to form blue color complex.
Q4.The ingredient not used for preserving food stuff is
Answer : Option AExplaination / Solution:
For preserving food stuff vinegar, salt and sugar is used. Ethanol is antiseptic in nature but not used for preserving food stuff.
Q5.The mature seed that do not contain residual endosperm is called
Answer : Option BExplaination / Solution:
The mature seeds may contain residual endosperm or get endosperm consumed completely during the embryological development. The seeds without endosperm are called non-albuminous seeds.
Answer : Option BExplaination / Solution:
The parasite obtaintheirfood from host body. Gut parasite like round worm and tap worm absorbed digested food from our body. They do not require alimentary canal as they absorb digested food.
Answer : Option AExplaination / Solution:
Hydroponics is a subset of hydroculture, the method of growing plants without soil, using mineral nutrient solutions in a water solvent.
Answer : Option CExplaination / Solution:
The abnormal frequency of bowel movement and increased liquidity of the faecal discharge is known as diarrhoea.