Chemistry Test

Question 1
1 / -0

Match the hybrid bond orbitals of list I with the species of the list II and pick out the correct ?

List I List II

(A) sp³ 1. [Ni(CN)₄]²

(B) dsp² 2. Ni(CO)₄

(C) sp³d 3. BrF^-₄

(D) sp³d² 4. ClF₃

A
A - 1 : B - 2 : C - 3 : D - 4

B
A - 1 : B - 2 : C - 4 : D - 3

C
A - 2 : B - 1 : C - 3 : D - 4

D
A - 2 : B - 1 : C - 4 : D - 3

Question 2
1 / -0

Which of the above compounds are enantiomers?

A
II and III

B
III and IV

C
III and V

D
I and V

Question 3
1 / -0

Give the IUPAC name of :

A
2,2-Dimethyl-3-propyl-4-isopropylheptane

B
4-Isopropyl-5-t-butyl octane

C
4-t-Butyl-5-isopropyl octane

D
2-Methyl-3-propyl-4-isopropylheptane

Question 4
1 / -0

First and second ionization energies of Magnesium are 7.646 and 15.035 eV respectively. The amount of energy in KJ needed to convert all the atoms of Magnesium into Mg²⁺ ions present in 12 mg of Magnesium vapours is :
[ Given : 1 eV = 96.5 kJ mol^-1 ]

A
1.1

B
1.5

C
2.0

D
0.5

Question 5
1 / -0

When H₂O₂ is added to ice cold solution of acidified potassium dichromate in ether and the contents are shaken and allowed to stand :

A
A blue colour is obtained in ether due to formation of Cr₂(SO₄)₃

B
A blue colour is obtained in ether due to formation of CrO₅

C
A blue colour is obtained in ether due to formation of CrO₃

D
Chromyl chloride is formed

Question 6
1 / -0

The electrochemical cell shown below is a concentration cell.

\(\mathrm{M} \mid \mathrm{M}^{2}\left(\right.\) saturatedsolutionofasparinglysolublesalt,MX \(\left._{2}\right) \mathrm{M}^{2}\left(0.001 \mathrm{moldm}^{-3}\right) \mid \mathrm{M}\)
The emf of the cell depends on the difference in concentrations of \(\mathrm{M}^{2+}\) ions at the two electrodes. The emf of the cell at \(298 \mathrm{K}\) is \(0.059 \mathrm{V}\).
The value of \(\Delta \mathrm{G}\left(\mathrm{kJmol}^{-1}\right)\) for the given cell is \(\left(\right.\) Take \(\left.1 \mathrm{F}=96500 \mathrm{Cmol}^{-1}\right)\)

A
-5.7

B
5.7

C
11.4

D
-11.4

Question 7
1 / -0

The standard e.m.f. of a cell, involving one electron change is found to be 0.591V at 25^o C.The equilibrium constant of the reaction is-

\(F=96500 \mathrm{C} \mathrm{mol}^{-1}, \mathrm{R}=8.314 \mathrm{JK}^{-1} \mathrm{mol}^{-1}\)

A
1.0 x 10¹

B
1.0 x 10⁵

C
1.0 x 10¹⁰

D
1.0 x 10³⁰

Question 8
1 / -0

The enthalpy change of the reaction

\(\mathrm{H}_{(a q)}^{+}+\mathrm{OH}_{(a q)}^{-} \longrightarrow \mathrm{H}_{2} \mathrm{O}_{(l)}\) is \(-57.3 \mathrm{kJ} \mathrm{mol}^{-1}\). If the enthalpies of Formation of \(\mathrm{H}_{(a q)}^{+}\) and \(\mathrm{H}_{2} \mathrm{O}_{(l)}\) are zero and
\(-285.84 \mathrm{kJ} \mathrm{mol}^{-1}\) respectively, then the enthalpy of formation of \(\mathrm{OH}_{(a q)}^{-}\) is

A
-228.54 kJ mol^-1

B
-333.14 kJ mol^-1

C
228.54 kJ mol^-1

D
333.14 kJ mol^-1

Question 9
1 / -0

Identify the final product (Z) in the following sequence of reactions :

\(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COOH} \frac{1 . \mathrm{LiAH}_{4}}{2 . \mathrm{PBr}_{3}}(\mathrm{X}) \stackrel{\mathrm{KCN}}{\longrightarrow}(\mathrm{Y}) \stackrel{\mathrm{LiAlH}_{4}}{\longrightarrow}(\mathrm{Z})\)

A
\(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} \mathrm{NH}_{2}\)

B
\(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}\)

C
\(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}\)

D

Question 10
1 / -0

Amongst the halides

(1) BCl₃ (2) AlCl₃

(3) GaCl₃ (4) InCl₃

The order of decreasing Lewis acid character is

A
1 > 2 > 3 > 4

B
4 > 3 > 2 > 1

C
3 > 4 > 2 > 1

D
2 > 3 > 4 > 1

Submit Test

Chemistry Test ...

Question 1

A - 1 : B - 2 : C - 3 : D - 4

A - 1 : B - 2 : C - 4 : D - 3

A - 2 : B - 1 : C - 3 : D - 4

A - 2 : B - 1 : C - 4 : D - 3

Question 2

II and III

III and IV

III and V

I and V

Question 3

2,2-Dimethyl-3-propyl-4-isopropylheptane

4-Isopropyl-5-t-butyl octane

4-t-Butyl-5-isopropyl octane

2-Methyl-3-propyl-4-isopropylheptane

Question 4

1.1

1.5

2.0

0.5

Question 5

A blue colour is obtained in ether due to formation of Cr2(SO4)3

A blue colour is obtained in ether due to formation of CrO5

A blue colour is obtained in ether due to formation of CrO3

Chromyl chloride is formed

Question 6

-5.7

5.7

11.4

-11.4

Question 7

1.0 x 101

1.0 x 105

1.0 x 1010

1.0 x 1030

Question 8

-228.54 kJ mol-1

-333.14 kJ mol-1

228.54 kJ mol-1

333.14 kJ mol-1

Question 9

\(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} \mathrm{NH}_{2}\)

\(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}\)

\(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}\)

Question 10

1 > 2 > 3 > 4

4 > 3 > 2 > 1

3 > 4 > 2 > 1

2 > 3 > 4 > 1

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Question Analysis

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A blue colour is obtained in ether due to formation of Cr₂(SO₄)₃

A blue colour is obtained in ether due to formation of CrO₅

A blue colour is obtained in ether due to formation of CrO₃

1.0 x 10¹

1.0 x 10⁵

1.0 x 10¹⁰

1.0 x 10³⁰

-228.54 kJ mol^-1

-333.14 kJ mol^-1

228.54 kJ mol^-1

333.14 kJ mol^-1