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General Tests on Benzoic Acid
(a) It dissolves in hot water but separates out in the form of white shining flakes on cooling.
(b) Benzoic Acid evolves CO2 with sodium bicarbonate, that is it gives effervescence with sodium carbonate.
(c) Neutral ferric chloride provides a buff coloured precipitate.
(d) When warmed with ethyl alcohol and a little conc. H2SO4, a fragrant odour of ethyl benzoate is acquired.
(e) While heated strongly along with soda lime, benzene vapours are evolved that are inflammable.
An unknown amount of copper, at 95 degrees C,, is placed in 100 g of water at 20 degrees C. It reaches temperature equilibrium at 60 degrees C. What is the mass of the copper?
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For an electron if the uncertainty in velocity is Δ v , the uncertainty in its position( Δ x ) is given by: (1) hm/ 4 Π Δ b (2) 4 Π / hm Π v
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A filled or half-filled set of p or d -orbitals is spherically symmetric. Point out the species which has spherical symmetry: (1) Na (2) C
GFAAS is often necessary to add modifiers in order to increase the sensitivity of the techniques.Giving example explain the principles used in the selection of such modifiers,be ca
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