Velocity of sound is
Blood vessels which carry blood from heart to all parts of the body are
Sound can’t travel through
The vitamin which helps in the coagulation of blood is
One of the following is used by the motorist to see the road behind him
Which of the following is a chemical change?
Which of the following is a waterborne disease?
Normal temperature of human body
The lens used for correcting long-sight is
Temporary hardness is caused in water due to the presence of
The pollutant which gives rise to acid rain is
The longest bone in the human body
Which of the following is a renewable source of energy?
Which of the following has the highest percentage in air?
How many litres go to make a gallon?