Which term is not associated with sound wave? 

Is it a small quantity of additives to keep tomato chutney fresh for longer? 

Which of the following instrument is used to measure Soil Water Tension? 

Why put a wooden handle in the kettle?

What is the minimum distance (in metres) required to hear an echo? 

The term ‘ecosystem’ was proposed by—

'Bar' is the unit of

A device, which is used in our TV set, computer, radio set for storing the electric charge, is