Choose the correct statement. [NCERT Exemplar] (a) Sun can be taken as an inexhaustible source of energy (b) There is infinite storage of fossil fuel inside the Earth (c) Hydro and wind energy plants are non-polluting sources of energy (d) Waste from a nuclear power plant can be easily disposed off

What type of questions asked from the lesson of magnetic effect of electric current 

Wavelength of green light is

A) 400-450 nm

B) 500-550 nm

C) 660-720 nm

D) 720-800 nm

What is the difference between anaerobic & aerobic respiration? Name some organism that uses the aerobic mode of respiration?

What are the main components of our environment? Explain each of them briefly.

What are examples of hydrotropism plants?