Class 12th chemistry notes
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Q5/10: Reimer-Tiemann reaction of phenol yields which major product?
Anonymous Quiz
19%
Salicylic acid
31%
Benzaldehyde
37%
Salicylaldehyde
10%
Benzoic acid
Q6/10: What is the product when phenol is treated with excess bromine water?
Anonymous Quiz
15%
o-Bromophenol
13%
p-Bromophenol
10%
m-Bromophenol
60%
2,4,6-Tribromophenol
Q7/10: Williamson ether synthesis involves which reaction mechanism?
Anonymous Quiz
31%
SN1
52%
SN2
14%
E1
3%
E2
Q9/10: Assertion (A): Ethers have lower boiling points than isomeric alcohols. Reason (R): Ethers cannot form intermolecular hydrogen bonds.
Anonymous Quiz
40%
Both A and R are true, R explains A
39%
Both A and R are true, R does not explain A
10%
A is true, R is false
8%
A is false, R is true
Q10/10: The catalyst used in the Rosenmund reduction is:
Anonymous Quiz
49%
Pd/BaSO4
28%
Zn-Hg/HCl
17%
LiAlH4
3%
NaBH4
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Q1/10: Which of the following does NOT undergo aldol condensation?
Anonymous Quiz
22%
Acetaldehyde
19%
Propanone
47%
Formaldehyde
7%
Propanal
Q2/10: Cannizzaro reaction is given by:
Anonymous Quiz
45%
Formaldehyde
26%
Acetaldehyde
16%
Acetone
13%
Butanal
Q3/10: Clemmensen reduction of a ketone is carried out in the presence of:
Anonymous Quiz
11%
H2/Pd
64%
Zn-Hg with concentrated HCl
17%
NH2NH2 with KOH
8%
LiAlH4
Q4/10: The IUPAC name of acetone is:
Anonymous Quiz
27%
Ethanal
14%
Propanal
44%
Propanone
13%
Butanone
❤1
Q5/10: Which of the following has the highest boiling point?
Anonymous Quiz
32%
Propan-1-ol
14%
Propanal
11%
Propanone
41%
Propanoic acid
Q6/10: Hell-Volhard-Zelinsky (HVZ) reaction is used to synthesize:
Anonymous Quiz
45%
Alpha-halo carboxylic acids
32%
Beta-halo carboxylic acids
14%
Acid chlorides
7%
Primary amines
Q8/10: Esterification of a carboxylic acid with an alcohol is:
Anonymous Quiz
13%
Irreversible and fast
44%
Reversible and slow
19%
Irreversible and slow
24%
Reversible and fast
Q9/10: Dehydration of ethanol with concentrated H2SO4 at 443 K yields:
Anonymous Quiz
5%
Ethyne
27%
Ethanal
43%
Ethene
23%
Ethoxyethane
Q10/10: Cumene hydroperoxide upon hydrolysis with dilute acid gives:
Anonymous Quiz
35%
Phenol and Acetone
28%
Phenol and Acetaldehyde
24%
Benzoic acid and Acetone
13%
Benzene and Acetic acid
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