Why can petrol fire not be put out with water?
Petrol is a hydro carbon which remains isolated with water and is having less density. So when water is poured petrol floats on it and keeps on burning.
Archive | Chemistry
What is the role of Ca2+ in physiologic processes?
(i) Ca2+ is necessary for the activation of clotting enzymes in plasma, (ii) Ca2+ controls membrane excitation, and Ca2+influx occurs during the excitatory process of nerve and muscle.
What is the difference between Simple Diffusion and Facilitated Diffusion?
The rate of simple diffusion is directly proportional to the concentration gradient across the membrane and the permeability of the membrane to the solute.
How Nuclear Energy is the Hope of Future?
Atomic energy is generated by splitting nuclear substances such as the atoms of uranium, thorium, cheralite, zircomium under controlled conditions.
5 Measures for Efficient Use of Energy
For conservation of energy resources in India an Energy Conservation Act, 2001 was enacted, which came into effect in March 2002. It provides measures for efficient use of energy and its conservation. To conserve energy we should:
Brief note on chain reaction
We know that ‘U-235’ atom is unstable. Its nucleus is balanced with a delicate bond. If this balance is slightly disturbed, it undergoes fission. So based on this principle, the nucleus of U-235 is…
Short note on nuclear reactor
The device to control the nuclear disintegration is called nuclear reactor. It converts the released heat energy into electricity. In this reactor, uranium is used as a fuel. This is enriched to increase the percentage…
What chemical test would you perform to detect (i) vanaspati in butter, (ii) Argemone oil in groundnut oil and (iii) Metanil yellow in pulses?
Chemical test performed to detect (i) vanaspati in butter, (ii) Argemone oil in groundnut oil and (iii) Metanil yellow in pulses are stated as follows…
Three advantages of the nuclear fusion process over nuclear fission to generate electricity
Advantages of nuclear fusion process over nuclear fission to generate electricity are stated in the following points…
Brief note on the method of mining sulphur
Underground sulphur is mined by using a special technique known as “Frasch process”. This process is based on the fact that sulphur has comparatively lower melting point. In the Frasch process, a hole is bored…