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The following has zero valency:
(1) Sodium
(2) Beryllium
(3) Aluminium
(4) Krypton
Ans: Krypton
Write the chemical equation for the entire combustion of heptane, C 7 H 16 . The heat of combustion for heptane is 4817 kJ/mol. How much heat could be released if 250 kg of hept
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
it is impossibe to synthesise orgnic compounds in the lab since life force is essential for their formation -theory is known as
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What is condensation polymer?
What is the out'' standing features of boron
naming a mu-dichloro bridge in coordination compounds
Dessicants(drying agents) can often be regenerated by heating. A dessicant that is commonly regenerated is CaSO 4 .2H 2 O:
Q. Show the Effect of pressure on chemical equilibrium? Ans. In gases, the pressure is proportional to the number of moles of molecules. Reactions accompanied by a change
Nucleophilic aromatic substitution reaction The product is formed by a nucleophilic aromatic substitution reaction in which chloride is displaced by hydroxide ion. The product
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