Write balanced chemical equations to show - I ] The oxidizing action of conc . Sulphuric acid on carbon ii ] The behaviour of H_(2)SO_(4) as an acid when it reacts with magnesium . Iii ] The dehydrating property of conc . Sulphuric acid with sugar . iii] The conversion of SO_(3) to sulphuric acid in the Contatct process .

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?