Which of the following statements is not a correct statement about the trends when going from, left to right across the periods of the Periodic Table?

(a) The eiements become less metallic in nature.

(b) The number of valence electrons increases.

(c) The atoms lose their electrons more easily,

(d) The aides become more acidic.

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?