Chemistry Test

Question 1
1 / -0

Silver is uniformly electro-deposited on a metallic vessel of surface area of $900 {cm}^{2}$ by passing a current of $0.5$ ampere for 2 hours. Calculate the thickness of silver deposited.(Given : the density of silver is $10.5 g / {cm}^{3}$ and atomic mass of $Ag = 180 amu, F = 96, 500 C {mol}^{- 1}$ )

A
$4.26 \times 10^{- 4} cm$

B
$2.46 \times 10^{- 4} cm$

C
$3.29 \times 10^{- 4} cm$

D
$1.69 \times 10^{- 4} cm$

Question 2
1 / -0

In which of the following does sulphur has the lowest oxidation state?

A
$H_{2} {SO}_{4}$

B
${SO}_{2}$

C
$H_{2} {SO}_{3}$

D
$H_{2} S$

Question 3
1 / -0

The substance that __________ the activity of catalysts is poisoner.

A
Increases

B
Decreases

C
Maintains

D
None

Question 4
1 / -0

The name of the compound $[C o {(N H_{3})}_{5} N O_{2}] C l_{2}$ will be:

A
Pentaamminonitrocobalt(II) chloride

B
Pentaamminenitro chloride cobaltate(III)

C
Pentaamminenitrocobalt(III) chloride

D
Penta nitroso amine chloro cobaltate(III)

Question 5
1 / -0

The correct order of basicity of the following compounds is:

A
1<2<3<4

B
1<2<4<3

C
2<1<3<4

D
4<3<2<1

Question 6
1 / -0

Specific conductance of $0.1 M NaCl$ solution is $1.01 \times 10^{- 2} {ohm}^{- 1} {cm}^{- 1}$ . Its molar conductance in ${ohm}^{- 1} {cm}^{2} {mol}^{- 1}$ is:

A
$1.01 \times 10^{- 2} {ohm}^{- 1} {cm}^{2} {mol}^{- 1}$

B

$1.01 \times 10^{3} {ohm}^{- 1} {cm}^{2} {mol}^{- 1}$

C

$1.01 \times 10^{2} {ohm}^{- 1} {cm}^{2} {mol}^{- 1}$

D

$1.01 \times 10^{- 3} {ohm}^{- 1} {cm}^{2} {mol}^{- 1}$

Question 7
1 / -0

Which of the following properties represents a non-ideal solution?

A
The interaction between the components is similar to that in the pure components.

B
There is no enthalpy change on mixing.

C
There is no volume change on mixing.

D
Their components show positive and negative deviations from Raoult's law.

Question 8
1 / -0

What is the conversion of acetaldehyde into ethyl acetate in the presence of aluminium ethoxide called?

A
Aldol condensation

B
Cope reaction

C
Tishchenko reaction

D
Benzoin condensation

Question 9
1 / -0

The reaction: $n - BuBr + KCN \frac{C_{2} H_{5} OH - H_{2} O}{\to} n - BuCN$ is an example of:

A
Decarboxylation reaction

B
Elimination reaction

C
Condensation reaction

D
Nucleophile substitution

Question 10
1 / -0

Hydrogenation of benzoyl chloride in the presence of Pd on BaSO₄ gives:

A
Benzyl alcohol

B
Benzaldehyde

C
Benzoic acid

D
Phenol

Question 11
1 / -0

Ethylene dibromide $(C_{2} H_{4} {Br}_{2})$ and 1,2 - dibromopropane $(C_{3} H_{6} {Br}_{2})$ forms a series of ideal solution over the whole range of composition. At $85^{\circ} C$ , the vapour pressure of these pure liquids are are $183 mmHg$ and $127 mm Hg$ respectively.
$10 gm$ of ethylene dibromide is dissolved in $80 gm$ of 1,2 - dibromo - propane. Calculate the partial pressures of each components and the total pressure of the solution at $85^{\circ} C$ .
Calculate the composition of vapour in equilibrium with the above and express as mole fraction of ethylene dibromide.

A
0.839

B
0.739

C
0.639

D
0.539

Question 12
1 / -0

The rate of chemical reaction depends on the nature of reactants because:

A
The number of bonds broken in the reactant molecules and the number of bonds formed in product molecules changes

B
Some of the reactants are solids at the room temperature

C
Some of the reactants are coloured

D
Some of rectants are liquid at room temperature

Question 13
1 / -0

Which of the following is not a function of lipids?

A
Energy storage

B
Cell signaling

C
Hormones

D
Enzymes

Question 14
1 / -0

A rain in 50% completed om shown and 75% in 4 hours. Find the order of reaction:

A
First order

B
Second order

C
Third order

D
Fourth order

Submit Test

Chemistry Test ...

Question 1

4.26×10−4 cm

2.46×10−4 cm

3.29×10−4 cm

1.69×10−4 cm

Question 2

H2SO4

SO2

H2SO3

H2S

Question 3

Increases

Decreases

Maintains

None

Question 4

Pentaamminonitrocobalt(II) chloride

Pentaamminenitro chloride cobaltate(III)

Pentaamminenitrocobalt(III) chloride

Penta nitroso amine chloro cobaltate(III)

Question 5

1<2<3<4

1<2<4<3

2<1<3<4

4<3<2<1

Question 6

1.01×10−2ohm−1 cm2 mol−1

1.01×103ohm−1 cm2 mol−1

1.01×102ohm−1 cm2 mol−1

1.01×10−3ohm−1 cm2 mol−1

Question 7

The interaction between the components is similar to that in the pure components.

There is no enthalpy change on mixing.

There is no volume change on mixing.

Their components show positive and negative deviations from Raoult's law.

Question 8

Aldol condensation

Cope reaction

Tishchenko reaction

Benzoin condensation

Question 9

Decarboxylation reaction

Elimination reaction

Condensation reaction

Nucleophile substitution

Question 10

Benzyl alcohol

Benzaldehyde

Benzoic acid

Phenol

Question 11

0.839

0.739

0.639

0.539

Question 12

The number of bonds broken in the reactant molecules and the number of bonds formed in product molecules changes

Some of the reactants are solids at the room temperature

Some of the reactants are coloured

Some of rectants are liquid at room temperature

Question 13

Energy storage

Cell signaling

Hormones

Enzymes

Question 14

First order

Second order

Third order

Fourth order

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Question Analysis

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$4.26 \times 10^{- 4} cm$

$2.46 \times 10^{- 4} cm$

$3.29 \times 10^{- 4} cm$

$1.69 \times 10^{- 4} cm$

$H_{2} {SO}_{4}$

${SO}_{2}$

$H_{2} {SO}_{3}$

$H_{2} S$

$1.01 \times 10^{- 2} {ohm}^{- 1} {cm}^{2} {mol}^{- 1}$

$1.01 \times 10^{3} {ohm}^{- 1} {cm}^{2} {mol}^{- 1}$

$1.01 \times 10^{2} {ohm}^{- 1} {cm}^{2} {mol}^{- 1}$

$1.01 \times 10^{- 3} {ohm}^{- 1} {cm}^{2} {mol}^{- 1}$