Q. 745.0( 3 Votes )
Which of the following hydrocarbons can decolourise bromine water and which cannot? Why?
C6H12, C6H14, C6H10
Answer :
C6H12 and C6H10 can decolourise bromine water as they are unsaturated hydrocarbons whereas C6H14 cannot decolourise bromine water as it is a saturated hydrocarbon.
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PREVIOUSAn organic compound A (molecular formula C2H4O2) reacts with Na metal to form a compound B and evolves a gas which burns with a pop sound. Compound A on treatment with an alcohol C in the presence of a little of concentrated sulphuric acid forms a sweet-smelling compound D (molecular formula C3H6O2). Compound D on treatment with NaOH solution gives back B and C. Identify A, B, C and D.NEXTA four carbon atoms containing neutral organic compound X reacts with sodium metal to evolve a gas which burns with a 'pop' sound. Another four carbon atoms containing carbon compound (Y) reacts with sodium hydrogencarbonate to evolve a gas which turns lime water milky. When compounds X and Y are heated together in the presence of a little of concentrated sulphuric acid, then a new compound Z is formed.
(a) What is compound X? Also write its formula.
(b) What is compound Y? Also write its formula,.
(c) What is compound Z? Also write its formula.
(d) What type of smell is given by compound Z?
(e) What is the general name of compounds like Z?
(f) What is the general name of the reaction which takes place between X and Y to form Z?
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