Chemistry Test

Question 1
1 / -0

The product obtained when methylamine \(\left(\mathrm{CH}_{3} \mathrm{NH}_{2}\right)\) is treated with nitrous acid is:

A
\(\mathrm{CH}_{3} \mathrm{OH}\)

B
\(\mathrm{CH}_{3}-\mathrm{O}-\mathrm{N}=\mathrm{O}\)

C
\(\mathrm{CH}_{3} \mathrm{OCH}_{3}\)

D
Both (B) and (C)

Question 2
1 / -0

The most non-metallic element among the following is:

A
\(1 s^{2}, 2 s^{2}, 2 p^{4}\)

B
\(1 s^{2}, 2 s^{2}, 2 p^{2}\)

C
\(1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2}, 2 \mathrm{p}^{3}\)

D
\(1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2}, 2 \mathrm{p}^{5}\)

Question 3
1 / -0

Ethyl alcohol is industrially prepared from ethylene by:

A
Permanganate oxidation

B
Catalytic reduction

C
Absorbing in H₂SO₄ followed by hydrolysis

D
All the three

Question 4
1 / -0

The production of dihydrogen obtained from coal gasification can be increased by reacting carbon monoxide of syngas mixture with steam in presence of a catalyst iron-chromium. What is this process called?

A
Hydrogen reaction

B
Water-gas shift reaction

C
Coal-gas shift reaction

D
Syn gasification

Question 5
1 / -0

An evacuated glass vessel weighs \(40.0 \mathrm{~g}\) when empty, \(135.0 \mathrm{~g}\) when filled with a liquid of density \(0.95 \mathrm{~g} \mathrm{~mL}-1\) and \(40.5 \mathrm{~g}\) when filled with an ideal gas at \(0.82 \mathrm{~atm}\) at \(250 \mathrm{~K}\). The molar mass of the gas in \(\mathrm{gmol}^{-1}\) is :

(Given : \(\mathrm{R}=0.082 \mathrm{~L} \mathrm{~atm} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\) )

A
35

B
50

C
75

D
125

Question 6
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A compound contains three elements \(\mathrm{A}, \mathrm{B}\) and \(\mathrm{C}\), if the oxidation of \(A=+2, B=+5\) and \(\mathrm{C}=-2,\) the possible formula of the compound is:

A

\(\mathrm{A}_{3}\left(\mathrm{~B}_{4} \mathrm{C}\right)_{2}\)

B

\(\mathrm{A}_{3}\left(\mathrm{BC}_{4}\right)_{2}\)

C

\(\mathrm{A}_{2}\left(\mathrm{BC}_{3}\right)_{2}\)

D

\(\mathrm{ABC}_{2}\)

Question 7
1 / -0

Calculate the heat of formation of diborane \(\left[\mathrm{B}_{2} \mathrm{H}_{6}(\mathrm{~g})\right]\) at \(298 \mathrm{~K}\) if the heat of combustion of it is \(-1941 \mathrm{~kJ} / \mathrm{mol}\) and heats of formation of \(\mathrm{B}_{2} \mathrm{O}_{3(\mathrm{~s})}\) and \(\mathrm{H}_{2} \mathrm{O}_{(\mathrm{g})}\) are \(-2368 \mathrm{~kJ} / \mathrm{mol}\) and \(-241.8 \mathrm{~kJ} /\) mol respectively.

A

\(-11.992 \mathrm{~kJ} / \mathrm{mol}\)

B

\(-1152.4 \mathrm{~kJ} / \mathrm{mol}\)

C

\(10.992 \mathrm{~kJ} / \mathrm{mol}\)

D

\(-10.992 \mathrm{~kJ} / \mathrm{mol}\)

Question 8
1 / -0

A rigid nitrogen tank stored inside a laboratory has a pressure of \(30 \mathrm{~atm}\) at \(06: 00 \mathrm{am}\) when the temperature is \(27^{\circ} \mathrm{C}\). At \(03: 00 \mathrm{pm}\), when the temperature is \(45^{\circ}\), the pressure in the tank will be ________ atm. [nearest integer]

A
35

B
33

C
30

D
32

Question 9
1 / -0

Match items of Row I with those of Row II.

Row I :

Row II :

(i) \(\alpha\)-D-(-) Fructofuranose.

(ii) \(\beta\)-D-(-) Fructofuranose

(iii) \(\alpha\)-D-(-) Glucopyranose.

(iv) \(\beta\)-D-(-) Glucopyranose

Correct match is

A
\(\mathrm{P} \rightarrow\) iv, \(\mathrm{Q} \rightarrow\) iii, \(\mathrm{R} \rightarrow\) i, \(\mathrm{S} \rightarrow\) ii

B
\(\mathrm{P} \rightarrow\) i, \(\mathrm{Q} \rightarrow\) ii, \(\mathrm{R} \rightarrow\) iii, \(\mathrm{S} \rightarrow\) iv

C
\(\mathrm{P} \rightarrow\) iii, \(\mathrm{Q} \rightarrow\) iv , \(\mathrm{R} \rightarrow\) ii, \(\mathrm{S} \rightarrow\) i

D
\(\mathrm{P} \rightarrow\) iii, Q \(\rightarrow\) iv, R \(\rightarrow\) i, \(S \rightarrow\) ii

Question 10
1 / -0

Two liquids \(\mathrm{A}\) and \(\mathrm{B}\) are mixed at temperature \(\mathrm{T}\) in a certain ratio to form an ideal solution. It is found that the partial pressure of \(\mathrm{A}\), i.e. \(\mathrm{P_{A}}\) is equal to \(\mathrm{P_{B}}\), the pressure of \(\mathrm{B}\) for liquid mixture. What is the total pressure of the liquid mixture in terms of \(\mathrm{P_{A}^{0}}\) and \(\mathrm{P_{B}^{0}}\)?

A
\(\mathrm{\frac{P_{A}^{0} P_{B}^{0}}{P_{A}^{0}+P_{B}^{0}}}\)

B
\(\frac{2 \mathrm{P}_{\mathrm{A}}^{0} \mathrm{P}_{\mathrm{B}}^{0}}{\mathrm{P}_{\mathrm{A}}^{0}+\mathrm{P}_{\mathrm{B}}^{0}}\)

C
\(\frac{2 \mathrm{P}_{\mathrm{A}}^{0}}{\mathrm{P}_{\mathrm{A}}^{0}+\mathrm{P}_{\mathrm{B}}^{0}}\)

D
\(\mathrm{\frac{2 P_{B}^{0}}{P_{A}^{0}+P_{B}^{0}}}\)

Submit Test

Chemistry Test ...

Question 1

\(\mathrm{CH}_{3} \mathrm{OH}\)

\(\mathrm{CH}_{3}-\mathrm{O}-\mathrm{N}=\mathrm{O}\)

\(\mathrm{CH}_{3} \mathrm{OCH}_{3}\)

Both (B) and (C)

Question 2

\(1 s^{2}, 2 s^{2}, 2 p^{4}\)

\(1 s^{2}, 2 s^{2}, 2 p^{2}\)

\(1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2}, 2 \mathrm{p}^{3}\)

\(1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2}, 2 \mathrm{p}^{5}\)

Question 3

Permanganate oxidation

Catalytic reduction

Absorbing in H2SO4 followed by hydrolysis

All the three

Question 4

Hydrogen reaction

Water-gas shift reaction

Coal-gas shift reaction

Syn gasification

Question 5

35

50

75

125

Question 6

\(\mathrm{A}_{3}\left(\mathrm{~B}_{4} \mathrm{C}\right)_{2}\)

\(\mathrm{A}_{3}\left(\mathrm{BC}_{4}\right)_{2}\)

\(\mathrm{A}_{2}\left(\mathrm{BC}_{3}\right)_{2}\)

\(\mathrm{ABC}_{2}\)

Question 7

\(-11.992 \mathrm{~kJ} / \mathrm{mol}\)

\(-1152.4 \mathrm{~kJ} / \mathrm{mol}\)

\(10.992 \mathrm{~kJ} / \mathrm{mol}\)

\(-10.992 \mathrm{~kJ} / \mathrm{mol}\)

Question 8

35

33

30

32

Question 9

\(\mathrm{P} \rightarrow\) iv, \(\mathrm{Q} \rightarrow\) iii, \(\mathrm{R} \rightarrow\) i, \(\mathrm{S} \rightarrow\) ii

\(\mathrm{P} \rightarrow\) i, \(\mathrm{Q} \rightarrow\) ii, \(\mathrm{R} \rightarrow\) iii, \(\mathrm{S} \rightarrow\) iv

\(\mathrm{P} \rightarrow\) iii, \(\mathrm{Q} \rightarrow\) iv , \(\mathrm{R} \rightarrow\) ii, \(\mathrm{S} \rightarrow\) i

\(\mathrm{P} \rightarrow\) iii, Q \(\rightarrow\) iv, R \(\rightarrow\) i, \(S \rightarrow\) ii

Question 10

\(\mathrm{\frac{P_{A}^{0} P_{B}^{0}}{P_{A}^{0}+P_{B}^{0}}}\)

\(\frac{2 \mathrm{P}_{\mathrm{A}}^{0} \mathrm{P}_{\mathrm{B}}^{0}}{\mathrm{P}_{\mathrm{A}}^{0}+\mathrm{P}_{\mathrm{B}}^{0}}\)

\(\frac{2 \mathrm{P}_{\mathrm{A}}^{0}}{\mathrm{P}_{\mathrm{A}}^{0}+\mathrm{P}_{\mathrm{B}}^{0}}\)

\(\mathrm{\frac{2 P_{B}^{0}}{P_{A}^{0}+P_{B}^{0}}}\)

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Question Analysis

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Absorbing in H₂SO₄ followed by hydrolysis