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Preparation of carboxylic acid by ( carbonation of Grignard reagent, Hydrolysis of Nitriles, oxidation of alcohols and aldehydes , oxidative cleavage of Alkene,
Question#1
Which of the acids cannot be prepared by Grignard reagent [MH CET 2004]
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Solution:
Formic acid can not be prepared by Grignard’s reagent. Higher acids are prepared by the reaction of CO2 on Grignard’s reagent
Question#2
How will you convert butan-2-one to propanoic acid [IIT-JEE (Screening) 2005]
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Solution:
\( CH_3-CO-CH_3 + I_2 + NaOH \rightarrow C_2H_5-ONa + CHI_3 + H_2O \)
Question#3
R CH 2CH 2OH can be converted into . RCH 2CH 2COOH The correct sequence of the reagents is [AIIMS 1997]
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Solution:
\( R-CH_2CH_2OH + PBr_3 \rightarrow R CH_2CH_2 Br \xrightarrow{KCN} RCH_2CH_2CN \xrightarrow{H3O+} RCH_2CH_2COOH \)
Question#4
X is heated with soda lime and gives ethane. X is [AFMC 2005]
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Solution:
Question#5
The end product B in the sequence of reactions
\( R-X \xrightarrow{CN-} A \xrightarrow{NaOH} B \) is [CPMT 1985]
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Solution:
Related MCQ's Catrgories
Categories
1. Introduction To Fundamental
2. Atomic Strcuture
6. Chemical Equilibrium
7. Reaction kinetics
8. Thermochemistry
9. Electrochemistry
11. s and p block Elements
14. Chemistry Of Hydrocarbons
15. Benzene
16. Alcohol and phenols
18. Aldehyde and ketones
19. Carboxylic acid
20. Macromolecules