Which gas is used in refrigeration plants ?
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A dynamite catridge struck in a rock makes the rock burst in being fired. How dies it happen ?
What is wave length?
Differentiate between modern periodic table and mendeleevs table?
explain sour gas?
What is importance of principles of solubility product ?
What is edta?
Why is alum added to purify water ?
In the calculation of calorific value of any fuel why the latent heat of vap. of water is taken as 587 kj/mol whereas actually it is 540kj/mol?
Why is it more efficient for a labourer to raise bricks up to a brick layer by the use of a rope and pully than by carrying them up a ladder ?
is urea addition affecting the COD (chemical oxygen demand) & BOD (Biological oxygen demand)level? why?
How are ph and pka related?
What is Salts ?