Assess the properties of elements and classify it as p and d block elements. • form coloured compounds • includes metals and non-mentals. •show various oxidation states. • The last electrons are filled in the outermost shell. • show similar properties, in periods. •The last electrons are filled in the shell preceding the outermost shell. •Only metals are included.

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?