Organic Chemistry Test

Result

Organic Chemistry Test - 40

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Weekly Quiz Competition

Question 1
4 / -1

The ammonia evolved from the treatment of 0.30 g of an organic compound for the estimation of nitrogen was passed in 100 mL of 0.1 M sulphuric acid. The excess of acid required 20 mL of 0.5 M sodium hydroxide solution for complete neutralisation. The organic compound is

A
acetamide

B
benzamide

C
urea

D
thiourea

Solution
Question 2
4 / -1

Quantitative measurement of nitrogen in an organic compound is done by the method

A
Berthelot method

B
Beilstein's method

C
Lassaigne's test

D
Kjeldahl's method
Question 3
4 / -1

Under identical conditions, the S_N 1 reaction will occur most efficiently with

A
tert-butyl chloride

B
1-chlorobutane

C
2-methyl-1-chloropropane

D
2-chlorobutane
Question 4
4 / -1

The total number of possible alkenes by dehydrobromination of 3-bromo-3-cyclopentylhexane using alcoholic KOH is

A
1

B
3

C
5

D
7

Solution
Question 5
4 / -1

In electrophilic aromatic substitution reaction, the nitro roup is meta-directing because it

A
decreases electron density at ortho and para-positions

B
decreases electron density at meta-position

C
increases electron density at meta-position

D
increases electron density at ortho andpara-positions
Question 6
4 / -1

The electrophile involved in the sulphonation of benzene is

A

B

C
H₃ O⁺

D
SO₃

Solution
Question 7
4 / -1

The reaction of sodium ethoxide with iodoethane to form diethyl ether is termed as

A
electrophilic substitution

B
nucleophilic substitution

C
electrophilic addition

D
radical substitution

Solution
Question 8
4 / -1

Arrange the following compounds in order of their decreasing reactivity towards an electrophile,E_⊕
I. Chlorobenzene
II. 2, 4-dinitrochlorobenzene
III. p-nitrochlorobenzene

A
III > II > I

B
II > III > I

C
I > III > II

D
I > II > III
Question 9
4 / -1

The least active electrophile is

A

B

C

D

Solution
Question 10
4 / -1

During nitration of benzene, the attacking electrophile is

A

B

C

D
HNO₃

Solution