If 100 cc of a gas A contains Y molecules. How many molecules of gas B will be present in 50 cc of B and of gas C in 25 cc. of C. The gases A, B, & C are under the same conditions of temperature & pressure.

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?