Which one of the following statements is not correct about the trends in the properties of the elements of a period on going from left to right? (a) The oxides become more acidic (b) The elements become less metallic (c) There is an increase in the number of valence electrons (d) The atoms lose their electrons more easily

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?