Chemistry Test

Result

Chemistry Test - 2

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Weekly Quiz Competition

Question 1
3 / -1

The method used for producing semiconductor grade metals of high purity is

A
Poling

B
Electrolysis

C
Zone refining

D
Vapour phase refining
Question 2
3 / -1

100 ml of a water sample contains 0.81 g of calcium bicarbonate and 0.73 g of magnesium bicarbonate. The hardness of this water sample expresses in terms of equivalents of is CaCO₃: (Molar mass of calcium bicarbonate is and magnesium bicarbonate is)

A
5,000 ppm

B
100 ppm

C
10,000 ppm

D
1,000 ppm
Question 3
3 / -1

The correct order of hydration enthalpies of alkali metal ions is:

A

B

C

D
None of these
Question 4
3 / -1

A
A - 4; B - 3; C - 2; D – 1

B
A - 1; B - 4; C - 3; D – 2

C
A - 2; B - 3; C - 4; D - 1

D
A - 2; B - 1; C - 4; D - 3
Question 5
3 / -1

The following ion shows colour not due to d-d transition

A

B

C

D
All
Question 6
3 / -1

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

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

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

D
A-(III), B-(II), C-(IV), D-(I)
Question 7
3 / -1

In the detection of nitrogen of an organic compound by Lassaigne’s test, prussianble color is obtained. This is due to the formation of which of the following complexes?

A

B

C

D
Question 8
3 / -1

Decreasing order of –I effect of the triad [– NO₂, -CH₃, – CN] is

A
-CH₃>- NO₂>-CN

B
-CH₃>-CN>- NO₂

C
-CN > - NO₂ >-CH₃

D
-NO₂ > - CN > -CH₃
Question 9
3 / -1

Choose the correct option:

A

B

C

D
Question 10
3 / -1

The increasing order of boiling points of the following compounds is:

A
I<IV<III<II

B
IV<I<II<III

C
I<III<IV<II

D
III<I<II<IV