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how i can prepare assignment .
A monosaccharide A has a molecular weight of 150 Da. The two stereoisomers B and C that are both optically inactive form when A reacts with NaBH4. Show all dissimilar stereoiso
The energy required to dislodge electron from excited isolated H-atom, IE 1 = 13.6 eV is: (1) = 13.6eV (2) > 13.6eV (3) 3.4 eV
at what temperature centigrade will the volume of a gas at 0 degrees Celsius double itself pressure remaining constant
what are the principle underlying the extraction of metals
How many ion H2- does have The H2- ion having three electrons. This can be conceived as the combination of a hydrogen atom with a hydride ion (H-). By the aufbau principle, two
How many unpaired electrons are present in Ni 2+ cation (atomic number = 28): (1) 0 (2) 2 (3) 4 (4) 6 Ans: 2
Why magnesium does not impart any colour to Bunsen flame while calcium does
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What are photochemical reactions? Explain the mechanism of the photo- chemical reaction occurring among hydrogen and chlorine gas.
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