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Chemistry
11th
grade
ALKENE AND ALKYNE (CHEMICAL PROPERTIES AND PREPARATION)
10 questions
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- 1. Multiple Choice
the major product when 2-pentanol react with concentrated sulphuric acid in 140oC is
1-pentene
methyl ethyl acetylne
dimethylethylene
pent-2-ene
methylpropylacetylene
- 2. Multiple Choice
which statement is not true about preparation of alkene?
we can produce 1-butene by addition of hydrogen to alkane
alkene can be produced by dehydrohalogenation of alkyl halide by using alcoholic base
Lindlar's catalyst is the catalyst that we can used to produced alkene from alkyne by reaction with hydrogen
dehydration of alcohol to produce alkene is kind of elimination reaction
addition of one mol hydrogen to 2-propyne will produce 1-propene
- 3. Multiple Choice
Reaction between this compound and two mole of H2 in the presence of Ni catalyst will produce
3-methylbutene
3-methylbutane
2-methylbutane
2-methylbutene
n-butane
- 4. Multiple Choice
Reaction between butyne with H2O in the presence of HgSO4 and H2SO4 as catalyst will produce?
aldehyde
enol
alcohol
ketone
diol
- 5. Multiple Choice
the result of this reaction is
2,2-dichloro-4,6-dimethyloctane
1,2-dichloro-4,6-dimethyloctane
2,2-dichloro-6-ethyl-4-methylhexane
1,2-dichloro-6-ethyl-4-methylhexane
2,2-dichloro-4,6-dimethylheptane
- 6. Multiple Choice
what is the product when propyne react with two mole HOCl (hypohalaus acid)
aldehyde (2,2-dichloropropanal)
1-chloro-2-propanol
2-chloro-1-propanol
ketone (1,1-dichloro-2-propanone)
alcohol (1,1-dichloro-2-propanol)
- 7. Multiple Choice
what kind of alkyne that we can obtained, when we react 1,2-dichlorobutane with 2 mole NaNH2?
but-1-yne
but-2-yne
but-3-yne
no alkyne is obtained
1,2-butadiyne
- 8. Multiple Choice
what kind of alkyl halide that we can used when we want to convert 1-propyne to 2-hexyne?
1-chloropropane
1-chlorobutane
2-chloropropane
2-propane
n-propane
- 9. Multiple Choice
What kind of carbide that you can used, when you want to produce propyne?
Ca3C3
Mg3C3
Ca2C3
CaC3
Mg2C3
- 10. Multiple Choice
we better used ............................... as a catalyst to convert alkyne to alkene
Pt
Pd
Pt/BaSO4 in quinoline
Pt/CaCO3 in quinoline
Pd/BaSO4 in quinoline
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