Chemistry Test

Question 1
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The above reaction is named as:

A
Gattermann's Reaction

B
Sandmeyer's Reaction

C
Wurtz's Reaction

D
Frankland's Reaction

Question 2
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Chlorine atom in \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{Cl}\) is attached to:

A
\(\mathrm{sp}^{3}\) carbon

B
\(\mathrm{sp}^{2}\) carbon

C
\(\mathrm{sp} \) carbon

D
None of the above

Question 3
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Trigonal bipyramidal geometry is shown by:

A
\(\left[ XeF _{8}\right]^{2-}\)

B
\(XeO _{3} F _{2}\)

C
\(FXeOSO _{2} F\)

D
None of these

Question 4
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Assume carbon burns according to following equation:

\(2 \mathrm{C}_{(\mathrm{s})}+\mathrm{O}_{2(\mathrm{~g})} \rightarrow 2 \mathrm{CO}(\mathrm{g})\)

When \(12 \mathrm{~g}\) carbon is burnt in \(48 \mathrm{~g}\) of oxygen, the volume of carbon monoxide produced is \(\qquad\) \(\times 10^{-1} \mathrm{~L}\) at STP [nearest integer]

[Given : Assume CO as ideal gas, Mass of \(\mathrm{C}\) is \(12 \mathrm{gmol}^{-1}\), Mass of \(\mathrm{O}\) is \(16 \mathrm{gmol}^{-1}\) and molar volume of an ideal gas at STP is \(22.7 \mathrm{Lmol}^{-1}\) ]

A
227

B
228

C
229

D
230

Question 5
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The freezing point of a diluted milk sample is found to be \(-0.2^{\circ} \mathrm{C}\), while it should have been \(-0.5^{\circ} \mathrm{C}\) for pure milk. How much water has been added to pure milk to make the diluted sample?

A
1 cup of water to 2 cups of pure milk

B
3 cups of water to 2 cups of pure milk

C
1 cup of water to 3 cups of pure milk

D
2 cups of water to 3 cups of pure milk

Question 6
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The osmotic pressure of a dilute solution of an ionic compound \(X Y\) in water is four times that of a solution of \(0.01 \mathrm{MBaCl}_2\) in water. Assuming complete dissociation of the given ionic compounds in water, the concentration of \(\mathrm{XY}\) (in \(\mathrm{mol} \mathrm{L}^{-1}\) ) in solution is:

A
\(4 \times 10^{-2}\)

B
\(6 \times 10^{-2}\)

C
\(\times 10^{-4}\)

D
\(16 \times 10^{-4}\)

Question 7
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Identify the compounds which are reduced and oxidised in the following reaction.

\(3 \mathrm{~N}_{2} \mathrm{H}_{4}+2 \mathrm{BrO}_{3}^{-} \rightarrow 3 \mathrm{~N}_{2}+2 \mathrm{Br}^{-}+6 \mathrm{H}_{2} \mathrm{O}\)

A
\(\mathrm{N}_{2} \mathrm{H}_{4}\) is oxidised and \(\mathrm{BrO}_{3}^{-}\)is reduced.

B
\(\mathrm{BrO}_{3}^{-}\)is oxidised and \(\mathrm{N}_{2} \mathrm{H}_{4}\) is reduced.

C
\(\mathrm{BrO}_{3}^{-}\)is both reduced and oxidised.

D
This is not a redox reaction

Question 8
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\(12 {~g}\) of urea is present in 1 litre of solution and \(68.4 {~g}\) of sucrose is separately dissolved in 1 litre of another sample of solution. The lowering of vapour pressure of first solution is:

A
Equal to that of second solution

B
Greater than that of second solution

C
Less than that of second solution

D
Double that of seconds solution

Question 9
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Calculate energy of one mole of photons of radiation whose frequency is \(5 \times 10^{14}\) \(\mathrm{Hz}\).

A
\(199.51 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

B
\(201.51 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

C
\(193.51 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

D
\(199.51 \mathrm{~J} \mathrm{~mol}\)

Question 10
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How many sigma bonds are present in \(\mathrm{CHCl}_{3}\) ?

A
1

B
2

C
3

D
4

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Chemistry Test ...

Question 1

Gattermann's Reaction

Sandmeyer's Reaction

Wurtz's Reaction

Frankland's Reaction

Question 2

\(\mathrm{sp}^{3}\) carbon

\(\mathrm{sp}^{2}\) carbon

\(\mathrm{sp} \) carbon

None of the above

Question 3

\(\left[ XeF _{8}\right]^{2-}\)

\(XeO _{3} F _{2}\)

\(FXeOSO _{2} F\)

None of these

Question 4

227

228

229

230

Question 5

1 cup of water to 2 cups of pure milk

3 cups of water to 2 cups of pure milk

1 cup of water to 3 cups of pure milk

2 cups of water to 3 cups of pure milk

Question 6

\(4 \times 10^{-2}\)

\(6 \times 10^{-2}\)

\(\times 10^{-4}\)

\(16 \times 10^{-4}\)

Question 7

\(\mathrm{N}_{2} \mathrm{H}_{4}\) is oxidised and \(\mathrm{BrO}_{3}^{-}\)is reduced.

\(\mathrm{BrO}_{3}^{-}\)is oxidised and \(\mathrm{N}_{2} \mathrm{H}_{4}\) is reduced.

\(\mathrm{BrO}_{3}^{-}\)is both reduced and oxidised.

This is not a redox reaction

Question 8

Equal to that of second solution

Greater than that of second solution

Less than that of second solution

Double that of seconds solution

Question 9

\(199.51 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

\(201.51 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

\(193.51 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

\(199.51 \mathrm{~J} \mathrm{~mol}\)

Question 10

1

2

3

4

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