Chemistry Test

Question 1
1 / -0

Which of the following will have the lowest boiling point?

A
2-MethylButane

B
2-MethylPropane

C
2,2-Dimethylpropane

D
n-Pentane

Question 2

1 / -0

Match List - I with Match List - II.

List I	List II
(A)Glucose + HI	(I)Gluconic acid
(B)Glucose + Br₂ water	(II)Glucose pentacetate
(C)Glucose + acetic anhydride	(III)Saccharic acid
(D)Glucose +HNO₃	(IV)Hexane

Choose the correct answer from the options given below:

(A)-(IV), (B)-(I), (C)-(II), (D)-(III)

(A)-(IV), (B)-(III), (C)-(II), (D)-(I)

(A)-(III), (B)-(I), (C)-(IV), (D)-(II)

(A)-(I), (B)-(III), (C)-(IV), (D)-(II)

Question 3
1 / -0

\(\mathrm{RNH}_{2}+\mathrm{CHCl}_{3}+\mathrm{KOH} \stackrel{\Delta}{\rightarrow} ?\)

The product of above reaction is:

A
\({RCl}\)

B
\(\mathrm{ROH}\)

C
\(RCN\)

D
\(RNC\)

Question 4
1 / -0

The number of primary, secondary, tertiary and quaternery carbon atoms in neopentane are respectively:

A
\(4, 1, 0, 0\)

B
\(4,3, 2,1\)

C
\(4, 0, 0, 1\)

D
\(4,0,1,1\)

Question 5
1 / -0

Which is the only alcohol that can be prepared by the indirect hydration of alkene?

A
Ethyl alcohol

B
Propyl alcohol

C
Isobutyl alcohol

D
Methyl alcohol

Question 6
1 / -0

In which of the following reactions, \(H _{2} O _{2}\) behaves as a reducing agent?

A
\(Na _{2} SO _{3}( aq )+ H _{2} O _{2}( aq ) \rightarrow Na _{2} SO _{4}( aq )+ H _{2} O ( l )\)

B
\(P bO _{2}( s )+ H _{2} O _{2}( aq ) \rightarrow P bO ( s )+ H _{2} O ( l )+ O _{2}( g )\)

C
\(2 KI ( aq )+ H _{2} O _{2}( aq ) \rightarrow 2 KOH ( aq )+ I _{2}( s )\)

D
\(KNO _{2}( aq )+ H _{2} O _{2}( aq ) \rightarrow KNO _{3}( aq )+ H _{2} O ( l )\)

Question 7
1 / -0

Resistance of a conductivity cell (cell constant \(129 \mathrm{~m}^{-1}\) ) filled with \(74.5 \mathrm{ppm}\) solution of \(\mathrm{KCl}\) is \(100 \Omega\) (labelled as solution 1). When the same cell is filled with \(\mathrm{KCl}\) solution of \(149 \mathrm{ppm}\), the resistance is \(50 \Omega\) (labelled as solution 2). The ratio of molar conductivity of solution 1 and solution 2 is i.e. \(\frac{\wedge_1}{\wedge_2}=x \times 10^{-3}\).

The value of \(x\) is _______________. (Nearest integer)

Given, molar mass of \(\mathrm{KCl}\) is \(74.5 \mathrm{gmol}^{-1}\).

A
5000

B
8000

C
1000

D
1200

Question 8
1 / -0

Hydrocarbons having single bonds are known as:

A
Saturated hydrocarbon

B
Unsaturated hydrocarbon

C
Alkyne

D
None of above

Question 9
1 / -0

Calculate the amount of benzoic acid \(\left({C}_{6} {H}_{5} {COOH}\right)\) required for preparing 250 \({mL}\) of \(0.15 {M}\) solution in methanol.

A
4.680 g

B
4.790 g

C
4.875 g

D
4.575 g

Question 10
1 / -0

Which of the following is not a rule for calculating oxidation number?

A
For ions, oxidation number is equal to the charge on the ion.

B
The oxidation number of oxygen is \(-2\) in all of its compound.

C
The oxidation number of fluorine is \(-1\) in all of its compounds.

D
Oxidation number of hydrogen is \(+1\) except in binary hydrides of alkali metals and alkaline earth metals where it is \(-1\).

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Chemistry Test ...

Question 1

2-MethylButane

2-MethylPropane

2,2-Dimethylpropane

n-Pentane

Question 2

(A)-(IV), (B)-(I), (C)-(II), (D)-(III)

(A)-(IV), (B)-(III), (C)-(II), (D)-(I)

(A)-(III), (B)-(I), (C)-(IV), (D)-(II)

(A)-(I), (B)-(III), (C)-(IV), (D)-(II)

Question 3

\({RCl}\)

\(\mathrm{ROH}\)

\(RCN\)

\(RNC\)

Question 4

\(4, 1, 0, 0\)

\(4,3, 2,1\)

\(4, 0, 0, 1\)

\(4,0,1,1\)

Question 5

Ethyl alcohol

Propyl alcohol

Isobutyl alcohol

Methyl alcohol

Question 6

\(Na _{2} SO _{3}( aq )+ H _{2} O _{2}( aq ) \rightarrow Na _{2} SO _{4}( aq )+ H _{2} O ( l )\)

\(P bO _{2}( s )+ H _{2} O _{2}( aq ) \rightarrow P bO ( s )+ H _{2} O ( l )+ O _{2}( g )\)

\(2 KI ( aq )+ H _{2} O _{2}( aq ) \rightarrow 2 KOH ( aq )+ I _{2}( s )\)

\(KNO _{2}( aq )+ H _{2} O _{2}( aq ) \rightarrow KNO _{3}( aq )+ H _{2} O ( l )\)

Question 7

5000

8000

1000

1200

Question 8

Saturated hydrocarbon

Unsaturated hydrocarbon

Alkyne

None of above

Question 9

4.680 g

4.790 g

4.875 g

4.575 g

Question 10

For ions, oxidation number is equal to the charge on the ion.

The oxidation number of oxygen is \(-2\) in all of its compound.

The oxidation number of fluorine is \(-1\) in all of its compounds.

Oxidation number of hydrogen is \(+1\) except in binary hydrides of alkali metals and alkaline earth metals where it is \(-1\).

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