Chemistry Test-28

Question 1
4 / -1

Which of the following organic compounds has same hybridization as its combustion product, \(\mathrm{CO}_{2}\) ?

A
Ethane

B
Ethyne

C
Ethene

D
Ethanol

Question 2
4 / -1

Mass numbers of the elements \(A, B, C\) and \(D\) are \(30,60,90\) and \(120\) respectively. The specific binding energy of them are \(5 \mathrm{MeV}\), \(8.5 \mathrm{MeV}\), \(8 \mathrm{MeV}\) and \(7 \mathrm{MeV}\) respectively. Then, in which of the following reactions energy is released?

(a) \(D \rightarrow 2B\)

(b) \(\mathrm{C} \rightarrow \mathrm{B}+\mathrm{A}\)

(c) \(\mathrm{B} \rightarrow 2 \mathrm{~A}\)

A
only in (a)

B
in (b), (c)

C
in (a), (c)

D
in (a), (b) and (c)

Question 3

4 / -1

Match the Column I and Column II and choose the correct code given below.

Column I	Column II
(A) Peroxyacetyl nitrile	(i) Waste incineration
(B) Indigo	(ii) Vat dye
(C) IR active molecules	(iii) Global warming
(D) Dioxins	(iv) Photochemical smog

A-(iv), B-(ii), C-(iii), D-(i)

A-(i), B-(ii), C-(iv), D-(iii)

A-(ii), B-(i), C-(iv), D-(iii)

A-(iv), B-(i), C-(iii), D-(ii)

Question 4
4 / -1

Number of isomeric primary amines obtained from \({C}_{4} {H}_{11} {~N}\) are:

A
\(3\)

B
\(4\)

C
\(5\)

D
\(6\)

Question 5
4 / -1

Which term describes the mass of \(6.022 \times 10^{23}\) representative particles?

A
Molar mass

B
Avogadro's number

C
Empirical formula

D
Molecular formula

Question 6
4 / -1

Generally, pure metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except \(\mathrm{Mn}\) and \(\mathrm{Mg}\) )?

A
\(\mathrm{H}_2 \mathrm{SO}_4\)

B
\(\mathrm{HCl}\)

C
\(\mathrm{HNO}_3\)

D
All of the above

Question 7
4 / -1

Which of the following statements is correct about natural rubber?

A
It is a linear polymer of isoprene.

B
It is a branched polymer of neoprene.

C
It is a branched polymer of chloroprene.

D
It is a linear polymer of 1,3-butadiene.

Question 8
4 / -1

Which of the following is a decomposition reaction?

A
\(\mathrm{Ag^{+}(aq)+C l^{-}(aq) \rightarrow A g C l(s)}\)

B
\(\mathrm{{CaCO}_{3}(s) \rightarrow \mathrm{CaO}(s)+\mathrm{CO}_{2}(g)}\)

C
\(\mathrm{{NH}_{3}(l)+\mathrm{H}_{2} \mathrm{O}(l) \rightleftharpoons \mathrm{NH}_{4}{ }^{+}(a q)+\mathrm{OH}^{-}(a q)}\)

D
\(\mathrm{HC_{2} \mathrm{H}_{3} \mathrm{O}_{2}(l)+\mathrm{OH}^{-}(aq) \rightarrow \mathrm{H}_{2} \mathrm{O}(l)+\mathrm{C}_{2} \mathrm{H}_{3} \mathrm{O}_{2}{ }^{-}(a q)}\)

Question 9
4 / -1

The state in which \(\mathrm{NaCl}\) is a bad conductor of electricity is __________ and the state in which \(\mathrm{NaCl}\) is a good conductor of electricity is __________.

A
solid, vapour

B
vapour, molten

C
molten, solid

D
solid, molten

Question 10
4 / -1

For an ideal solution of two components A and B, which of the following is true?

A
\(\Delta \mathrm{H}_{\text {mixing }}<0\) (zero)

B
\(\Delta \mathrm{H}_{\text {mixing }}>0\) (zero)

C
A - B interaction is stronger than A - A and B - B interactions

D
A - A, B - B and A - B interactions are identical

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Chemistry Test-...

Question 1

Ethane

Ethyne

Ethene

Ethanol

Question 2

only in (a)

in (b), (c)

in (a), (c)

in (a), (b) and (c)

Question 3

A-(iv), B-(ii), C-(iii), D-(i)

A-(i), B-(ii), C-(iv), D-(iii)

A-(ii), B-(i), C-(iv), D-(iii)

A-(iv), B-(i), C-(iii), D-(ii)

Question 4

\(3\)

\(4\)

\(5\)

\(6\)

Question 5

Molar mass

Avogadro's number

Empirical formula

Molecular formula

Question 6

\(\mathrm{H}_2 \mathrm{SO}_4\)

\(\mathrm{HCl}\)

\(\mathrm{HNO}_3\)

All of the above

Question 7

It is a linear polymer of isoprene.

It is a branched polymer of neoprene.

It is a branched polymer of chloroprene.

It is a linear polymer of 1,3-butadiene.

Question 8

\(\mathrm{Ag^{+}(aq)+C l^{-}(aq) \rightarrow A g C l(s)}\)

\(\mathrm{{CaCO}_{3}(s) \rightarrow \mathrm{CaO}(s)+\mathrm{CO}_{2}(g)}\)

\(\mathrm{{NH}_{3}(l)+\mathrm{H}_{2} \mathrm{O}(l) \rightleftharpoons \mathrm{NH}_{4}{ }^{+}(a q)+\mathrm{OH}^{-}(a q)}\)

\(\mathrm{HC_{2} \mathrm{H}_{3} \mathrm{O}_{2}(l)+\mathrm{OH}^{-}(aq) \rightarrow \mathrm{H}_{2} \mathrm{O}(l)+\mathrm{C}_{2} \mathrm{H}_{3} \mathrm{O}_{2}{ }^{-}(a q)}\)

Question 9

solid, vapour

vapour, molten

molten, solid

solid, molten

Question 10

\(\Delta \mathrm{H}_{\text {mixing }}<0\) (zero)

\(\Delta \mathrm{H}_{\text {mixing }}>0\) (zero)

A - B interaction is stronger than A - A and B - B interactions

A - A, B - B and A - B interactions are identical

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