Q.1.
tion Q1) Identify the major products P, Q and R in the following sequence of reactions : [ NEET 2018]
-
17%
a)
-
34%
b)
-
20%
c)
-
29%
d)
Q.2.
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their .... ..[NEET 2018]
-
23%
a) more extensive association of carboxylic acid via van der Waals force of attraction
-
19%
b) formation of carboxylate ion
-
23%
c) formation of intramolecular H-bonding
-
35%
d) formation of intermolecular H-bonding
Q.3.
Than One Correct Answer Q3) On warming with iodine anad aqueous sodium hydroxide a pale yellow precipitate and sodium salt of an acid having the formula HOOC - CH2 - CH2 - COOH is formed. The structural formula of the compound could be
-
19%
a) CH3 - CO - CH2 . CH2 - CH3
-
50%
b)CH3COCH2 - CH(CH3)COOH
-
19%
c) CH3 . CO. CH2. CH2 - COOH
-
12%
d) CH3.CO.CH2.CH2.COCH3
Q.4.
Than One Correct Answer Q4) Acetyl chloride does not react with
-
21%
a) ethanol
-
21%
b) ethanal
-
50%
c) diethyl ether
-
8%
d) propanal
Q.5.
Acetyl chloride cannot be obtained by treating acetic acid with
-
10%
a) PCl5
-
5%
b) SOCl2
-
57%
c) CHCl3
-
29%
d) PCl3
Q.6.
Long chain carboxylic acids are called fatty acids because
-
10%
a) the molecule is very fatty
-
45%
b) the molecules were first found in natural fat
-
35%
c) they have fattering effect
-
10%
d) none of the above
Q.7.
tion Q7) In the cmopund given below the correct correr of acidity of the position (X), (Y) and (Z) is ... ...[ IIT 2004]
-
33%
a) Z > X > Y
-
60%
b) X > Y > Z
-
7%
c) X > Z > Y
-
0%
d) Y > X > Z
Q.8.
On treatment of citric acid with fuming H2SO4, which of the following is produced?
-
31%
a) Acetone dicarboxylic acid
-
31%
b) Citraconic anhydride
-
19%
c) Dihydroxy acetone
-
19%
d) Acetone
Explanation
Q.9.
A fruity smell is produced by the reaction of C2H5OH with
-
35%
a) CH3COCH3
-
6%
b) PCl5
-
41%
c) CH3COOH
-
18%
d) none of these
Q.10.
Which of the following orders of relative strength of acid is correct?
-
50%
a) FCH2COOH > ClCH2COOH > BrCH2COOH
-
19%
b) ClCH2COOH > BrCH2COOH > FCH2COOH
-
19%
c) BrCH2COOH > ClCH2COOH > FCH2COOH
-
12%
d) ClCH2COOH > FCH2COOH > BrCH2COOH
Q.11.
Than One Correct Answer Q11) Acetyl chloride does not react with
-
27%
a) ethanol
-
47%
b) ethanal
-
7%
c) diethyl ether
-
20%
d) propanal
Q.12.
Which of the following is the weakest acid?
-
47%
a) CH3COOH
-
33%
b) HCOOH
-
20%
c)
-
0%
d)
Q.13.
Lactic acid on heating with dil. H2SO4 gives
-
12%
a) Acrylic acid
-
35%
b) Acetic acid
-
41%
c) Propionic acid
-
12%
d) Formic acid
Explanation
Q.14.
Which of the following orders is wrong with respect to property indicated?
-
50%
a) Aniline > Cyclohexylamine > Benzamide ( Base strength)
-
25%
b) Formic acid > Acetic acid > Propionic acid ( Acid strength)
-
17%
c) Benzoic acid > Phenol > Cyclohexanol ( Acid strength )
-
8%
d) Fluoro acetic acid > Chloro acetic acid > Bromoa acetic acid ( Acid strength)
Q.15.
An organic compound is boiled with alcoholic potash. the product is cooled and acidified with HCl. A white solid separates out. The starting compound may be .... ...[ karnataka CET 2004]
-
30%
a) Ethyl acetate
-
20%
b) Ethyl formate
-
30%
c) Ethyl benzoate
-
20%
d) Methyl acetate
Q.16.
Consider the acidity of the carboxylic acids .... .. [ AIEEE 2004] I. PhCOOH II. o-NO2C6H4COOH III. p-NO2C6H4COOH IV) m-NO2C6H4COOH
-
22%
a) I > II > III > IV
-
44%
b) II > III > IV > I
-
22%
c) II > IV > I > III
-
11%
d) II > IV > III > I
Q.17.
ion Q17) The correct order of reactivity of PhMgBr with ... ... [ IIT 2004]
-
10%
a) I > II > III
-
20%
b) III > II > I
-
50%
c) II > III > I
-
20%
d) I > III > II
Q.18.
Reactivity of acids in esterification follows the order
-
9%
a) CH3COOH > HCOOH > R3CCOOH > R2CHCOOH > RCH2COOH
-
27%
b) HCOOH > CH3COOH > RCH2COOH > R2CHCOOH > R3CCOOH
-
55%
c) R3CCOOH > R2CHCOOH > RCH2COOH > CH3COOH > HCOOH
-
9%
d) none of the avove
Q.19.
CH3CO2C2H5 on reaction with sodium ethoxide in ethanol gives X, which on heating in the presence of acid gives 'Y' Compound Y is
-
0%
a) CH3COCH3
-
50%
b) CH3COCH2COOH
-
38%
c)
-
12%
d)
Explanation
Q.20.
Select the pKa value of the strongest acid from the following ... [KCET 2004]
-
45%
a) 1.0
-
27%
b) 2.0
-
18%
c) 3.0
-
9%
d) 4.5
Q.21.
tion : Acetate ion is more basic than methoxide ion Reason : Acetate ion is resonance stabilised
-
25%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
-
50%
b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
-
12%
c) Assertion is true but, Reason is false
-
12%
d) Assertion is false but, Reason is true
Q.22.
Indicate the organic structure for product expected when 2-methyl propene is heated with acetyl chloride in presence of anhydrous ZnCl2
-
20%
a)
-
30%
b)
-
20%
c)
-
30%
d)
Q.23.
ion More Than One Correct Answer Q23) The compound will show
-
22%
a) tautomerism
-
22%
b) optical isomerism
-
44%
c) geometrical isomerism
-
11%
d) none of these
Q.24.
ion Q24) The product of the following reaction is
-
0%
a) Ethyl ethanoate
-
0%
b) Formic acid
-
30%
c) CO and H2O
-
70%
d)Ethanoic anhydride
Explanation
Q.25.
In the anion HCOO- the two carbon oxygen bonds are found to be of equal legth. What is the reason for it? ... ... [ AIEEE 2004]
-
56%
a) The anion HCOO- has two equivalent resonating structures
-
0%
b) The anion is obtained by removal of proton from the acid molecule
-
11%
c) Electronic orbitals of carbon atom are hybridised
-
33%
d) The C=O bond is weaker than the C-O bond
Explanation
Q.26.
ion Q26) The reaction is known as
-
22%
a) Koch reaction
-
11%
b) Wurtz reaction
-
44%
c) Kolbe's reaction
-
22%
d) Clemmensen's reduction
Q.27.
ion Q27) The decreasing order of nucleophilicity among the nucleophilies is c) CH3O- d) CH-
-
71%
a) d, c, a, b
-
14%
b) a, b, c, d
-
0%
c) d, c, b, a
-
14%
d) c,b, a, d
Q.28.
Acetic acid is manufactured by the fermentation of
-
44%
a) Ethanal
-
11%
b) Methanol
-
11%
c) Methanal
-
33%
d) Ethanol
Q.29.
For hydrolysis of the following functional groups, the decreasing order of reactivity is
-
33%
a) RCOOR > RCONH2 > RCOCl
-
0%
b) RCOOR > RCOCl > RCONH2
-
44%
c) RCOCl > RCONH2 > RCOOR
-
22%
d) RCOCl > RCOOR > RCONH2
Q.30.
tion :Trichloro acetic acid is stronger than acetic acid Reason : Electron withdrawing substituents decrease the acidic nature
-
0%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
-
12%
b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
-
62%
c) Assertion is true but, Reason is false
-
25%
d) Assertion is false but, Reason is true