A metal oxide has the formula X2O3. It can be reduced by hydrogen to give free metal and water. 0.1596g of metal oxide requires 6mg of Hydrogen for complete reduction. Calculate the atomic weight of the metal (in amu)

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?