Questions

Calculate the time period (in seconds) of a sound wave of wavelength 5m travelling with a speed of 500 m/s.

The sensation of sound persists in the human brain for about:

Choose the odd word/letters/number/number pair from the given alternatives.

Choose the odd word/letters/number/number pair from the given alternatives.

The state of matter can be changed into another state by changing the

Alkali metals are assigned which group in the Modern Periodic Table?

An element has an atomic weight of W and an atomic number of N. The number of protons in the nucleus of its atom is

One should use porcelain and not metal containers in a microwave oven because..