Chemistry Test

Result

Chemistry Test - 26

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Weekly Quiz Competition

Question 1
1 / -0

For a first order reaction, (A) → products, the concentration of A changes from 0.1 M to 0.025 M in 40 minutes. The rate of reaction when the concentration of A is 0.01 M is :

A

1.73 x 10^–4 M/min

B

3.47 x 10^–4 M/min

C

3.47 x 10^–5 M/min

D

1.73 x 10^–5 M/min
Question 2
1 / -0

A

Option 1

B

Option 3

C

Option 2

D

Option 4
Question 3
1 / -0

Aspirin is known as :

A

Acetyl salicylate

B

Acetyl salicylic acid

C

Phenyl salicylate

D

Methyl salicylic acid
Question 4
1 / -0

For the estimation of nitrogen, 1.4 g of organic compound was digested by Kjeldahl method and the evolved ammonia was absorbed in 60 mL of M/10 sulphuric acid. The unreacted acid required 20 ml of M/10 sodium hydroxide for complete neutralization. The percentage of nitrogen in the compound is:

A

6%

B

5%

C

10%

D

3%
Question 5
1 / -0

Which one is classified as a condensation polymer?

A

Dacron

B

Teflon

C

Acrylonitrile

D

Neoprene
Question 6
1 / -0

The compressibility factor for a real gas at high pressure is :

A

1 - pb/RT

B

1 + pb/RT

C

1

D

1 + RT/pb
Question 7
1 / -0

A

Option 3

B

Option 2

C

Option 1

D

None of these
Question 8
1 / -0

A

Option 1

B

Option 2

C

Option 3

D

None of these
Question 9
1 / -0

A

Van Arkel

B

Poling

C

cupellation

D

zone refining
Question 10
1 / -0

The increasing order of the ionic radii of the given isoelectronic species is :

A

Ca^2+ , K^+ , Cl^– , S^2–

B

K^+ , S^2– , Ca^2+ , Cl^–

C

S^2– , Cl^– , Ca^2+ , K^+

D

Cl^– , Ca^2+ , K^+ , S^2–