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OTI365 - Engineering Entrance - MPC
JEE Main Chemistry - Synthetic and Natural Polymers Practice Questions

JEE Main Chemistry - Synthetic and Natural Polymers

Exam Duration: 60 Mins Total Questions : 30

1 )

For which of the following compounds the Lassaigne's test of nitrogen will fail?

(a)
H₂NCONH.NH₂ HCL
(b)
H₂N.NH₂.2HCL
(c)
NH₂CONH₂
(d)
None

2 )

Which alkyl halide has maximum density?

(a)
C₃H₇I
(b)
C₂H₅I
(c)
CH₃I
(d)
CH₃Br

3 )

On treating phenol with PC1₅ the main product is

(a)
chlorobenzene
(b)
triphenyl phosphate
(c)
hexachlorobenzane
(d)
BHC

4 )

Arrange the following compounds in order of increasing dipole moment : Toluene (1); m-dichlorobenzene (II); o-dichlorobenzene (III); and p-dichlorobenzene (IV).

(a)
I < IV< II< III
(b)
IV< I < II < III
(c)
IV < I < III < II
(d)
IV< II < I < III

5 )

Which of these following reagents will convert glycerol to acrolein?

(a)
P₂O₅
(b)
conc.H₂SO₄
(c)
KHSO₄
(d)
All the three

6 )

Which of the following compounds does not react with metalic sodium?

(a)
CH₃CH(OH)Ch₃
(b)
CH₃-O-CH₃
(c)
CH₃COOH
(d)
C₂H₅OH

7 )

Which of the following will react with water?

(a)
CHCL₃
(b)
CCL₃CHO
(c)
CCL₄
(d)
CLCH₂-CH₂-Cl

8 )

The acid which does not from from anhydride when treated with P₄O₁₀ is

(a)
formic acid
(b)
acetic acid
(c)
propanoic acid
(d)
benzoic acid

9 )

Mercuric chloride reduced to mrecurous chloride by

(a)
formic acid
(b)
ammonia
(c)
acetic acid
(d)
benzaldehyde

10 )

The product formed on heating sucrose with conc.HNO₃ is

(a)
citric acid
(b)
lactic acid
(c)
sucrose nitrate
(d)
oxalic acid

11 )

Alkyl isocyanides contain \(\sigma \) and \(\pi \) bounds

(a)
\(9\sigma \quad and\quad 3\pi \)
(b)
\(9\sigma \quad and\quad 9\pi \quad \)
(c)
\(3\sigma \quad and\quad 4\pi \)
(d)
\(5\sigma \quad and\quad 7\pi \)

12 )

When glycerol is heated with KHSO₄ or ZnCl₂ or H₂SO₄ the product formed is

(a)
formaldehyde
(b)
acetaldehyde
(c)
acrolein
(d)
None of these

13 )

Glycerol when heated with oxalic acid at 383 K gives

(a)
formic acid
(b)
acetic acid
(c)
alyl alcohal
(d)
None of these

14 )

Anisole can be prepared byheating

(a)
C₆H₅Br and CH_3ONa
(b)
C₆H₅ONa and CH₃Br
(c)
C₆H₅ONa and C₂H₅Br
(d)
None of these

15 )

When ethyl alcohol reacts with diazomethane(CH₂N₂)in presence of HBF₄, th eproduct formed would be

(a)
Methyl ethyl ether and N₂
(b)
Diethyl ethre and N₂
(c)
methyl alcohol and methyl amine
(d)
None of the above

16 )

2,4 dinitrophenyl hydrazine is called

(a)
Tollens reagent
(b)
Bayer's regent
(c)
Brady's reagent
(d)
Fehling's solution

17 )

methyl magnesium bromide reacts with cyanogen chloride to give

(a)
Acetonitrile
(b)
ethane nitrile
(c)
methyl cyanide
(d)
All of the above

18 )

methyl isocyanide on acid hydrolysis gives

(a)
acetic acid + NH₃
(b)
methyle amine and formic acid
(c)
acetic acid and formic acid
(d)
None is correct

19 )

m-dinitroaniline when reduced with ammonium sulphide gives

(a)
m-diaminobenzene
(b)
m-nitroaniline
(c)
aniline
(d)
None of these

20 )

Among the given compounds, the most suscribable to nucleophilic attack at the carbonyl group is

(a)
MeCOCL
(b)
MeCHO
(c)
MeCOOMe
(d)
MeCOOCOMe

21 )

Ethyne + X \(\underset { \longrightarrow }{ { Ba }^{ 2+ } } \)prop-2 ene -nitrile. Here X is

(a)
bromine
(b)
barium cyanide
(c)
hydrogen bromide
(d)
hydrogen cyanide

22 )

RCH₂CCl₂ R \(\overset { Reagent }{ \longrightarrow } \) RC \(\equiv \) CR .The reagent used is

(a)
Na
(b)
HCl / H₂O
(c)
KOH in C₂H₅OH
(d)
Zn / alcohol

23 )

C₂H₅Br \(\overset { AgCN }{ \longrightarrow } \quad X\quad \overset { Reduction }{ \underset { Zn/Hg-HCl }{ \longrightarrow } } \quad Y\) , Y is

(a)
n-propylamine
(b)
ethylamine
(c)
isopropylamine
(d)
ethylmethylamine

24 )

Which is not true for C=O bond and C=C bond?

(a)
Both are made up of one \( \delta \) bond and one \(\pi \)-bond
(b)
Both are planar in nature
(c)
Both use SP² hybrid of the C atom for their formation
(d)
Carbonyl compounds undergo electrophilic addition reaction whereas compounds containing ethylenic double bonds undergo nucleophilic addition reaction