Question
Decibel is used to measure the intensity of -
Solution
The decibel (dB) is used to measure sound level, but it is also widely used in electronics, signals and communication.
A storm is predicted if atmospheric pressure –
Activated charcoal is used to remove colouring matter from pure substances by which of the following process?
The sudden fall of atmospheric pressure indicates –
Bleaching powder is represented as ______.
The conversion of hard water into soft water by boiling or adding calcium hydroxide is called:
Who measured the velocity of light first?
In a compound, the elements are always present in definite proportions by:
In nuclear reactor, heavy water is used as –
Which of the following does not give effervescence with sodium carbonate?
Which of the following has the lowest ionization enthalpy?
