Who introduced the concept of Elasticity of Substitution?

In which century Kalhana's Rajatarangini was composed?

Which of the following words has no mention in the Constitution of India?

The catalyst used in hydrogenation of oils is

Which is the biggest item of expenditure of the government in the revenue account?

Where/Which is the highest waterfall in India?

Which state of India has the highest rail line?

Adjustment is the process by which a creature balances situations that affect the fulfillment of its needs and requirements. Is this statement?