Which of the following processes takes place inside a biogas plant?
Which of the following chemicals is used to preserve food items?
Which of the following is being consumed by the athletes for the sake of instant energy?
Which of the following substances consists of only one element?
Who among the following has been credited for the discovery of blood groups of human beings?
Formation of a mirage is an optical illusion which takes place due to:
Why is the wire in an electric fitting earth?
Chemotherapy deals with which of the following fields?
Alternating Current (AC) changes:
Name the country which has become the first country of the world to legalized marijuana