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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.
The outer electronic structure 3s 2 3p 5 is possessed by: (1) Cl (2) O (3) Ar (4) Br ans: Cl
200.0 M&Ms mass out at 175 grams. How many tons of M&Ms are there in one mole?
The formation of energy bonds in solids are in accordance with: (1) Heisenberg's uncertainty principle (2)Bohr's theory (3 )Ohm's law (4) Rutherford's atomic model
free energy and spontaeity
Bohr's radius can have: (1) Discrete values (2) +ve values (3) - ve values (4) Fractional values Ans: +ve values
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Are there any other palatable inorganic acids other than phosphoric acid? I need it because I on a research for finding food replacing plants ---- us becoming autotrophs. I am on t
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Q. Write short note on "Electrically conducting polymers". Ans. electrically conducting polymers: Many synthetic organic polymers have been found to possess high electrical c
Nitration or Direct method The number of - NO 2 groups introduced in benzene nucleus relies upon the nature and concentration of the nitrating agent, temperature of nitration
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