Q. What is the full form of ITCZ?

? Inter tropical convergence zone

Q. Contraction of heart is also known as –

? Systole

Q. Which is the warmest layer of the atmosphere?

? Thermosphere

Q. The energy of wind is-

? Only kinetic

Q. Which instrument is used to measure sound under water ?

? Hydrophone

Q. Diffusion of light in the atmosphere takes place due to:

? Dust particles

Q. A living part of the organisms environment is known as –

? Biotic Factor

Q. What percentage of India’s population is dependent on agriculture?

? 50%

Q. Which is the closest star to our solar system?

? Alpha Centauri