Chemistry Test 181

Result

Chemistry Test 181

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Weekly Quiz Competition

Question 1
4 / -1

has correct IUPAC named as :

A
3-Carbamoylbenzene-1-carbonitrile

B
3-Cyanobenzene-1-carboxamide

C
3-Cyanobenzamide

D
3-Aminocarbonylcyanobenzene

Solution
Question 2
4 / -1

The homologue of Ethyl propanoate is :

A
Propyl ethanoate

B
Methyl butanoate

C
Ethyl butanoate

D
Isopropyl ethanoate

Solution
Question 3
4 / -1

Geometrical isomerism is not shown by

A

B

C

D

Solution

Conditions for geometrical isomerism is not fulfilled in C.
Question 4
4 / -1

Identify the option of correct isomeric relation.

A
A

B
B

C
C

D
D

Solution

I & II have change in position of π-bond.

II & III have different geometrical orientations.

I & III also have change in position of π-bond.
Question 5
4 / -1

The value of m and n are respectively :

A
2 & 1

B
2 & 2

C
1 & 2

D
1 & 1

Solution
Question 6
4 / -1

A

B

C

D

Solution
Question 7
4 / -1

reacts with carbonyls (Aldehyde/ketones) to give yellow ppt.

A mixture of benzaldehyde and formaldehyde is heated with 2,4 DNP. How many fractions of organic products will obtained after fractional distillation of product mixture.

A
2

B
1

C
3

D
4

Solution

Benzaldehyde is unsymmetrical, gives 2 product but formaldehyde is symmetrical ,gives only one product.
Question 8
4 / -1

Compare the physical properties (μ, b.p, m.p, &stability) in the geometrical isomers CH₃ - CH = CH - CNChoose from the following options:

A
A

B
B

C
C

D
D

Solution

In trans isomer there is linear addition of bond dipoles hence μ isgreater and its B.P will be more. Packing in trans is better hence m.p is more.
Question 9
4 / -1

An organic compound X(C₅H₁₀) on ozonolysis gives Y & Z. The product mixture Y and Z on reaction with NH₂ – OH gives four oximes. The structure of X is

A

B

C

D

Solution
Question 10
4 / -1

Which is least acidic.

A

B

C

D

Solution

-I group increases acidic strength and I effects depend upon distance.