The Vaishnava saint, Sankaradeva introduced the ________

Twinkling of the Stars is due to the phenomenon of 

Which of the following circuit elements is used to 'block' DC in an electronic circuit?

If an object starts moving and if there is no friction at all, what happens?

Which compound is used to prepare water proof clothes?

What term describes the rate of change of velocity? 

Which of the following liquids has the least density?

Which of the following is the best fire-extinguisher?

What conditions must be met for stationary waves to form?

For a wave, wavelength divided by the time period equals ________.

Which among the following is a vector quantity?