Chemistry Test

Result

Chemistry Test - 23

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Weekly Quiz Competition

Question 1
1 / -0

A

Option 1

B

Option 3

C

Option 2

D

Option 4
Question 2
1 / -0

Calculate the wavelength (in nanometer) associated with a proton moving at 1.0 x 10^3 ms^−1 (Mass of proton = 1.67 x10^- 27 kg and h = 6.63 x 10^-34 Js ) :

A

0.40 nm

B

14.0 nm

C

2.5 nm

D

0.032 nm
Question 3
1 / -0

Larger number of oxidation states are exhibited by the actinoids than those by the lanthanoids, the main reason being

A

lesser energy difference between 5f and 6d than between 4f and 5d orbitals

B

more energy difference between 5f and 6d than between 4f and 5d orbitals

C

more reactive nature of the actinoids than the lanthanoids

D

4f orbitals more diffused than the 5f orbitals
Question 4
1 / -0

A

Option 3

B

Option 2

C

Option 1

D

Option 4
Question 5
1 / -0

A

Option 1

B

Option 3

C

Option 2

D

Option 4
Question 6
1 / -0

Oxidising power of chlorine in aqueous solution can be determined by the parameters indicated above :

A

+120 kJmol^−1

B

−610 kJmol^−1

C

−850 kJmol^−1

D

+152 kJmol^−1
Question 7
1 / -0

A

Option 2

B

Option 3

C

Option 4

D

Option 1
Question 8
1 / -0

At 80 deg C, the vapour pressure of pure liquid ‘A’ is 520 mm Hg and that of pure liquid ‘B’ is 1000 mm Hg. If a mixture solution of ‘A’ and ‘B’ boils at 80 deg C and 1 atm pressure, the amount of ‘A’ in the mixture is (1 atm = 760 mm Hg)

A

50 mol percent

B

34 mol percent

C

48 mol percent

D

52 mol percent
Question 9
1 / -0

The absolute configuration of

A

R, R

B

S, R

C

R, S

D

S, S
Question 10
1 / -0

A

1 : 1

B

1 : 3

C

1 : 36

D

1 : 9