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Organic Chemistry - Hydrocarbons
1.
Using which of the following reagents can one perform a simple test that
can be used to differentiate between C6H5C≡CH and C6H5CH=CH6?
- A.NaOH/H2O
- B.Br2/CCl4
- C.Ag(NH3)2>OH.
- D.CrO3/H2SO4
- Answer
- Report
Answer : [C]
2.
The addition of HCl to 1-phenylpropene gives
- A.C6H5CHClCH2CH3
- B.C6H5CH2CHClCH3
- C.C6H5CH2CH2CH2Cl
- D.C6H5CH(CH3)CH2Cl
- Answer
- Report
Answer : [A]
3.
The addition of HBr in the presence of a peroxide to 1-phenylpropene gives
- A.C6H5CHBrCH2CH3
- B.C6H5CH2CHBrCH3
- C.C6H5CH(CH3)CH2Br
- D.C6H5CH2CH2CH2Br
- Answer
- Report
Answer : [B]
4.
By using which of the following can the conversion PhC≡CH → PhC≡CHCH3
be achieved?
- A.Br2/CCl4, then KOH
- B.Na, then CH3CH2I
- C.Na, then CH3I
- D.CH2N2
- Answer
- Report
Answer : [C]
5.
Which conformation of ethane has the lowest potential energy?
- A.Eclipsed
- B.Skewed
- C.Staggered
- D.All will have equal PE
- Answer
- Report
Answer : [C]
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