The volume of a given mass of gas with some pieces of marble in a container at 760 mm of pressure is 100ml. If the pressure is changed to 1000mm of Hg, the new volume is 80ml. Find out the volume occupied by the marble pieces keeping temperature constant.

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?