Name three elements which make up more than 90 percent of the human body.
Oxygen is about 60 - 70%,
carbon just below 20% and
hydrogen about 10%
These three element make up more than 90 percent of the human body.
What is the relation between temperature in Kelvin (K) and temperature on centigrade scale?
The popular unit of pressure is atmosphere, how is it related to pascal?
What are SI units of the following:
(i) Density
(ii) Molarity
(iii) Energy
(iv) Temperature ?
Out of 5.00 g and 5.0 g which one is more accurate and why?
What is iodised table salt?
Under what conditions air is considered as a heterogenous mixture?
What is gun powder?
Name two elements which are liquids.
Name two elements which are gases.
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