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Why does methyl ethanoate not give iodoform test while ethyl ethanoate does?
Ans) Iodoform test for esters is the test given by its products on hydrolysismethyl ethanoate gives methanol and ethanoic acid etyl ethanoate gives ethanol and ethanoic acid fuirther methanol on oxidation gives formaldehyde and ethanol gives ethanal so ethanal and hence ethanol gives positive iodoform test therefore ethyl ethanoate responds whereas methyl ethanotae doesnt
A moving particle may have wave motion, if: (1) Its mass is very high (2) Its velocity is negligible (3) Its mass is negligible (4) Its mass is very high and velocity
Methylated spirits burner A easy burner can be made from an old boot polish tin. Though it is not necessary, a metal tube can be soldered to the top and a twisted piece of wire
The uncertainty in the position of a moving bullet of mass 10 gm is 10 -5 m . Calculate the uncertainty in its velocity: (1) 5.2 x 10 -28 / sec (
Which orbital is dumb-bell shaped : (1) s -orbital (2) p -orbital (3) d -orbital (4)f -orbital Ans: p -orbital
properties
Q)why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction? Ans) The Standard free energy of formation of Cu2S is greater than
In any atom which sub-shell will have the highest energy in the following : (1) 3p (2) 3d (3) 4s (4) 3s Ans: 3d
Uses of Acid Amides (a) Acid Amides used in organic synthesis. The compounds like methyl cyanide, Methylamine and ethylamine can be prepared. (b) Acid Amides used in leathe
Uses of Dihydric Alcohols
Explain electrical conductivity and molar conductivity of a solution and write the units of molar conductivity
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