Free Printable Estimation of Alkalinity

1.

What is alkalinity?

a)

Ability to neutralize a base

b)

Presence of H⁺ ions

c)

Ability to neutralize an acid

d)

Presence of Ca²⁺ ions

2.

Which ion is responsible for alkalinity?

a)

. Mg²⁺

b)

Ca²⁺

c)

Cl^-

d)

OH^-

3.

What are the indicators used in the estimation of alkalinity?

a)

EBT and starch

b)

Phenolphthalein and methyl orange

c)

Phenolphthalein and EBT

d)

methyl orange and starch

4.

What is the permissible limit of total alkalinity in a drinking water as per BIS norms?

a)

600 ppm

b)

500 ppm

c)

400 ppm

d)

200 ppm

5.

What is a standard solution?

a)

Unknown weight of the solution

b)

Its strength is already known

c)

Equivalent weight of the solution

d)

Mole fraction of the solution

6.

Which of the following indicator gives pink colour in basic medium?

a)

Methyl orange

b)

Starch

c)

EBT

d)

Phenolphthalein

7.

With respect to the constituents causing alkalinity in water, which of the following situation never arises?

a)

CO₃^2- and HCO₃^– together

b)

HCO₃^– and OH^– together

c)

OH^– only

d)

OH^– and CO₃^2- together

8.

What is the disadvantage of using high alkaline water?

a)

It may lead to infections

b)

It may lead to electrolysis

c)

It may lead to caustic embrittlement

d)

It may lead to indigestion

9.

The alkalinity due to bicarbonate ion when P < 1/2 T will be

a)

T-2P

b)

2(T-P)

c)

0

d)

2P-T

10.

The alkalinity due to carbonate ion is 2P when

a)

P = T

b)

P > 1/2 T

c)

P = 1/2 T

d)

P <1/2 T

Estimation of Alkalinity

Total questions: 10

Worksheet time: 5mins

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