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JEE CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS
1
Hard
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Analyzing
+4 | -1
Consider the following compounds.
(A) Phenol
(B) Propyne
(C) Benzene sulphonic acid
(D) Benzoic acid
(E) Cyclopentadiene
(F) Ethane
(G) Picric acid
(H) 4-Nitro Cyclohexanol
If is the total number of compounds which evolve gas with metal and is the total number of compounds which evolve gas with . Then find the value of .
(A) Phenol
(B) Propyne
(C) Benzene sulphonic acid
(D) Benzoic acid
(E) Cyclopentadiene
(F) Ethane
(G) Picric acid
(H) 4-Nitro Cyclohexanol
If is the total number of compounds which evolve gas with metal and is the total number of compounds which evolve gas with . Then find the value of .
View answer and explanation
Correct option: A
4
Option A (4) is correct because there are 7 compounds that evolve H2 gas with Na metal (A, B, C, D, E, G, H) and 3 compounds that evolve CO2 gas with NaHCO3 (C, D, G), so X-Y = 7-3 = 4.
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Reason (R): Isopropyl alcohol is used as an antiseptic for skin before giving injections. Germinated Barley (an enzyme) is a source of enzyme: The process of converting alkyl halides into alcohols involves The b.p. of alcohols are….than corresponding thiols. Which of the following can not be used to oxidise primary alcohols to aldehydes Conc. heated with excess of at to form
Reason (R): Isopropyl alcohol is used as an antiseptic for skin before giving injections. Germinated Barley (an enzyme) is a source of enzyme: The process of converting alkyl halides into alcohols involves The b.p. of alcohols are….than corresponding thiols. Which of the following can not be used to oxidise primary alcohols to aldehydes Conc. heated with excess of at to form