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1
The speed of sound is slowest in:
2
When Vapours of a substance are cooled and changes into liquid, it is called:
3
An Instrument used to measure gas pressure is called:
4
If we add salt to the pure water, its boiling point will
5
The S I unit of Heat is:
6
A Transistor is a semiconductor device with at least..........terminals.
7
All electromagnetic radiations travel through vaccum with the speed:
8
The most abundant element in the Universe is:
9
The substance which increases the the rate of Chemical reaction is:
10
The Average human body contains about ..............gram of sodium chloride: