Chemistry Test

Result

Chemistry Test - 14

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Weekly Quiz Competition

Question 1
1 / -0

If the value of Avogadro number is 6.023 x 10^23 mol^–1 and the value of Boltzmann constant is 1.380 x 10^-23 JK^-1, then the number of significant digits in the calculated value of the universal gas constant is

A

5

B

4

C

3

D

6
Question 2
1 / -0

A

Option 1

B

Option 2

C

Option 3

D

All of these
Question 3
1 / -0

The major organic compound formed by the reaction of 1, 1, 1– trichloroethane with silver powder is:

A

Ethene

B

Acetylene

C

2- Butyne

D

2- Butene
Question 4
1 / -0

50 cm^3 of 0.2 N HCI is titrated against 0.1 N NaOH solution. The titration is discontinued after adding 50 cm^3 of NaOH. The remaining titration is completed by adding 0.5 N KOH. The volume of KOH required for completing the titration is ______.

A

10 cm^3

B

12 cm^3

C

10.5 cm^3

D

25 cm^3
Question 5
1 / -0

The correct statement(s) for orthoboric acid is/are

A

Acidity of its aqueous solution increases upon addition of ethylene glycol.

B

It behaves as a weak acid in water due to self ionization.

C

It has a three dimensional structure due to hydrogen bonding.

D

All of these
Question 6
1 / -0

A

Option 1

B

Option 2

C

Option 3

D

Option 4
Question 7
1 / -0

A

option A, C, D

B

Option B, C, D

C

Option B, C

D

option A, D
Question 8
1 / -0

The total number(s) of stable conformers with non-zero dipole moment for the following compound is(are)

A

5

B

4

C

3

D

6
Question 9
1 / -0

Which one is classified as a condensation polymer?

A

Dacron

B

Teflon

C

Acrylonitrile

D

Neoprene
Question 10
1 / -0

The pair(s) of reagents that yield paramagnetic species is/are

A

Cu and dilute HNO3

B

Na and excess of NH3

C

All of these

D

K and excess of O2