Hydrocarbons questions
384 published questions with worked solutions.
- Acetylene reacts with dilute H_2SO_4 in the presence of HgSO_4 to give
- Compared to the melting points of their even-carbon-chain neighbours, the melting points of odd-carbon-chain *n*-alkanes are
- Alkanes mainly show reactions involving
- Of the following petroleum fractions, the one with the lowest boiling point is
- Which hydrocarbon is a liquid at STP?
- Which of the following is an unsymmetrical alkene (bearing different substituents on each alkene carbon)?
- Addition of hydrogen on C=C is called hydrogenation. Addition of a halogen on C=C is called
- The mechanism of the Wurtz reaction involves
- Addition of HOCl to alkenes in the presence of strong acids, to form a halohydrin, proceeds via formation of a
- Which characteristic property is shared by both ethane and ethyne?
- CH_4 is formed when
- At low temperature, the slow, controlled addition of molecular bromine to H_2C=CH–CH_2–C (pent-1-en-4-yne) gives
- When but-1-ene is mixed with excess bromine, the expected reaction product is
- Which of the following reagents distinguishes 1-butyne from 2-butyne?
- Acetylene gives
- But-1-ene, mixed with HBr (no peroxide present), gives as the major product
- The middle-oil fraction of coal-tar distillation is rich in
- Acetylene reacts with 42% H_2SO_4 containing 1% HgSO_4 to give
- Petroleum refining refers to
- CaC_2 is hydrolysed to give a gas with a garlic odour (due to phosphine impurity). The gas is passed through an ammoniacal...
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