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Properties and uses of D.D.T.
(i) D.D.T. is approximately insoluble in water although it is moderately soluble in polar solvents.
(ii) D.D.T. is a powerful insecticide. It is mainly used as an insecticide for killing mosquitoes and other insects.
Side Effects of D.D.T.: D.D.T. is not biodegradable. Its residue included in environment and its long term effects could be very dangerous. It has been confirmed to be toxic to living beings. Hence, its use has been restricted in several western countries. Though, in place of its dangerous side effects.
Ethyl bromide can be converted into ethyl alcohol using- Moist silver oxide or dry silver oxide?
Q. Give the general formula of Organic Acids? Ans. Organic acids have the general formula RCOOH. The R- is an alkyl group or hydrogen. The functional group is -COOH and
Electronic configuration of Sc 21 is: (1) 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 , 4s 2 , 3d 1 (2) 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 , 4s 1 , 3d 2 (3)1
which is the main postulate of bohr''s model of atom
HOW UNIT CELL AND SPACE LATTICE ARE RELATED TO EACH OTHER?
order
The formation of a co-ordination compound involves reaction between a metal ion and ligands. If the force of attraction of the metal ion with ligands is strong a stable complex may
what is isomer of diethyl ether?
Rayon - Semi Synthetic Polymers Rayon is a man made material which contains purified cellulose in the type of long fibres. Cellulose is reacted along with cold NaOH solution to
Which of the following set of quantum numbers is possible: (1) n=3, l=2, m=2,and s = +1/2 (2) n=3, l=4, m=0,and s = -1/2 (3) n=3, l=2, m=2,and s = +1/2 (4
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