Iodination
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Q. Photochemical iodination of alkane is carried out in the presence of :
- HI
- HIO3
- I2
- None of the above
Q.
When phenol is distilled with Zinc dust it gives?
Q. Consider the following reaction sequence
Select the incorrect statement about the major organic product P.
Select the incorrect statement about the major organic product P.
- P on reduction with LiAlH4/ether can produce 2∘– alcohol
- P gives 2, 4 D.N.P test
- P gives positive lodoform test
- P contain ketone group
Q. A mixture of two organic compounds was treated with sodium metal in dry ether solution, isobutane was obtained as a product. The two chloride compounds are:
- Methyl chloride and butyl chloride
- Methyl chloride and ethyl chloride
- Isopropyl chloride and methyl chloride
- Isopropyl chloride and ethyl chloride
Q. Presence of which reagent will affect the reversibility of the following reaction, and change it to a irreversible reaction.
CH4+I2hv⇌ReversibleCH3−I+HI
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CH4+I2hv⇌ReversibleCH3−I+HI
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- Liquid NH3
- Concentrated HIO3
- HOCI
- Dilute HNO2
Q. The major product obtained from photochemical chlorination of ethylbenzene (in excess) is hydrolyzed with aqueous KOH and the product is then oxidized with PCC. The final product formed is:
- PhCH2CHO
- PhCOCH3
- PhCHO
- PhCOOH
Q. Write the correct reactivity order towards photochemical chlorination.
(X) CH3−CH2−CH2−CH2−CH3
(Y) CH3−CH3|CH−CH2−CH3
(Z) CH3−CH3|C|CH3−H
(W) CH3−CH3
(X) CH3−CH2−CH2−CH2−CH3
(Y) CH3−CH3|CH−CH2−CH3
(Z) CH3−CH3|C|CH3−H
(W) CH3−CH3
- X > Y > Z > W
- Z > Y > X > W
- X > Z > W > Y
- Z > W > Y > X
Q. Photochemical iodination of alkane is carried out in the presence of :
- HI
- I2
- HIO3
- None of the above
Q. Photochemical iodination of alkane is carried out in the presence of :
- HI
- I2
- HIO3
- None of the above
Q. Sample of 2, 3-dibromo-3-methylpentane is heated with zinc dust. The resulting product is isolated and heated with HI in the presence of phosphorus. Indicate which is the structure that represent the final organic product formed in the reaction
Q. Which of the following statements are correct about the following reactions:
RCOOH+LiAlH4→
RCOOH+LiAlH4→
- Second step is the transfer of H⊖ ion from AlH3 to (C=O) of RCOOO⊖
- (RCH=O) is further reduced to RCH2O⊖ which on acidification gives RCH2OH
- First step in the above reaction is
RCOOH+LiAlH4→RCOOO⊖Li⊕+H2+AlH3 - The intermediate product (RCH=O) is formed
Q. Photochemical iodination of alkane is carried out in the presence of :
- HI
- I2
- HIO3
- None of the above
