Chemistry Test 102

Result

Chemistry Test 102

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Weekly Quiz Competition

Question 1
4 / -1

Hydrogenation of the above compound in the presence of poisoned palladium catalyst gives

A
An optically active compound

B
An optically inactive compound

C
A racemic mixture

D
A diastereomeric mixture

Solution

Addition on triple bond takes place by the addition of hydrogen

Will have a plane of symmetry and hence opticatically inactive. So option (2) is correct.
Question 2
4 / -1

The sum of "number of filled orbitals" and "number of vacant orbitals" upto valence shell of Fe is

A
15

B
25

C
30

D
35
Question 3
4 / -1

Resistance of an aqueous solution containing 2 moles NH₄Cl and completely filled in between two electrodes which are 20 cm apart was found to be 100 ohm. The molar conductivity of NH₄Cl (in ohm^–1 cm² mol^–1) is

A
2.0

B
1.25

C
2.50

D
3.80

Solution
Question 4
4 / -1

The oxidation of toluene with hot KMnO₄ gives -

A
Benzoic acid

B
Benzaldehyde

C
Benzene

D
Benzyl alcohol

Solution
Question 5
4 / -1

Which of the following set contains specie that have interaction energy proportional to 1 / r³ ?

(r → internuclear distance)

(4) KCl_(aq.) + NaCl_(aq.)

A
(1)

B
(2)

C
(3)

D
(4)
Question 6
4 / -1

What is the apparent molecular mass (in gm/mol) of a weak acid, HA (molar mass = 30.0 gm/mol) in an aqueous solution, which shows elevation in boiling point by 0.0156ºC?

[Given: pK_a (HA) = 2.0, K_b (H₂O) = 0.52 K kg mol^–1]

A
17.8

B
28.3

C
20.0

D
23.6

Solution
Question 7
4 / -1

N-Ethyl pthalimide on hydrolysis gives-

A
Methyl alcohol

B
Ethyl amine

C
Dimethyl amine

D
Diethyl amine

Solution
Question 8
4 / -1

Directions For Questions

Consider the following reactions of 1A metals.

M + (x+y)NH₃ → [M(NH₃)_x]⁺ + [e(NH₃)_y]^–

...view full instructions

Which of the following statement is INCORRECT?

A
The blue color of the solution is due to the ammoniated electron which absorbs energy in infrared region of light

B
In concentrated solution, the blue color changes to bronze color

C
If concentration increases, the solution turns diamagnetic from paramagnetic

D
The deep blue solution is conducting in nature
Question 9
4 / -1

The compressibility factor of a Vanderwaal gas is 0.5 at 27ºC and 24 atm. The value of Vanderwaal constant 'a' (in atm-L²/mol²) is

(b = 0.10 L/mol, R = 0.08 L-atm/K-mol)

A
2.4

B
4.0

C
3.6

D
9.0

Solution
Question 10
4 / -1

'B', 'A' and 'B' respectively are :

A
(1)

B
(2)

C
(3)

D
(4)

Solution

In H₂O (polar solvent) dibromophenol derivative and in CS₂ (non-polar) solvent momeobromo phenol derivative is obtained.