Question # 1

Which salt cause permanent hardness in water is:

Choose an answer

Ca(HCO₃)₂

Mg(HCO₃)₂

CaCl₂

KCl

The bond angle between H-O-H in water is:

Choose an answer

104.5^o

104.6^o

104.7^o

104.8^o

Water molecule has a structure:

Choose an answer

Ionic

Non polar

Tetrahedral

Polar

Boiling point of water is:

Choose an answer

0^oC

25^oC

80^oC

100^oC

Hookworm is a parasite that infects the:

Choose an answer

large intestine

small intestine

stomach

liver

Fertilizers are used to make up the deficiency of;

Choose an answer

oxygen and carbon

iron and magnesium

nitrogen and phosphorus

hydrogen and calcium

Which of the following salt is soluble in water.

Choose an answer

NaCl

KCl

Na₂SO₄

All of them

Acute lead poisoning causes dysfunction of.

Choose an answer

Kidney

Liver

CNS

All of them

Freezing point of water is:

Choose an answer

-4°C

0°C

-36°C

-58°C

Some organic compound are soluble in water due to the presence of .

Choose an answer

-OH

H⁺

Botha a and b

Covalent bond

Water has a maximum density at 4 ^oC

Choose an answer

12 cm^-3

2 g cm^-3

1 g cm^-3

4 gcm^-3

How many percentage to water contains oceans?

Choose an answer

67%

77%

87%

97%

More Classes

Other Links

Chemistry 10th Class English Medium Unit 15 Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer