Optical fibre works on which of the following principle of light?
What is the SI unit of Young’s modulus of elasticity?
The matter that supports the sound is called ________.
The fuse in an electric circuit is connected in
Electric Motor converts _____ energy to mechanical energy.
Who was the first to use radio waves to detect "the presence of distant metallic objects"?
Which of the following elements has the lowest melting point?
Fe has 26 protons in its nucleus. What are the number of electrons in Fe2+ (II) ion?
Which of the following is a radioactive element?
Tamarindus indica is the scientific name of __________.
Air has maximum proportion of which inert gas?
Which of the gas is not known as greenhouse gas?
Which of the following are longest cells of human body?
Which organ is affected by Pneumonia disease?
Bio-fertilizers convert nitrogen to ______ .
Which one of the following is a carbohydrate?
Which of the following transports water from the roots of the plant to its leaves?
The function of haemoglobin in the body is
Kidney stones are composed of _______.
The word CNG in the transport network system stands for