The experimental design which control fertility variation in one direction is known as________?

If in a river the flood rises and falls suddenly due to storm rain, then such river is called ________?

A condition of green plants in which they become unhealthy and pale fellow in colour is known as________?

The unit of a scale used to measure the level of acidity or alkalinity of chemicals is called:

The steep conduits made in the body of dam for running turbines to generate hydro-electric power are called________?

All Vitamins are present in eggs except ________?