Olete.in – MCQs, Mock Tests & Government Job Prep | CBES Board Class 9 CLASS 9 FUNDAMENTALS OF CHEMISTRY MCQS

A mixture that consists of different components is called

1. homogeneous mixture
2. heterogeneous mixture
3. mixture
4. dilute solution

✅ Correct Answer: 2

Free radicals are electrically

1. positively charged
2. negatively charged
3. neutral
4. all of above

✅ Correct Answer: 3

The empirical formula for water is

1. CO2
2. HO
3. H2
4. H2O

✅ Correct Answer: 4

Hair contains keratin proteins which are also present in nails and wool is an example of

1. Biochemistry
2. Inorganic chemistry
3. Physical chemistry
4. organic chemistry

✅ Correct Answer: 1

Hair contains keratin proteins which are also present in nails and wool is an example of

1. Biochemistry
2. Inorganic chemistry
3. Physical chemistry
4. organic chemistry

✅ Correct Answer: 1

The natural force that holds together elements together is called

1. chemical bond
2. force of attraction
3. gravitational force
4. physical bond

✅ Correct Answer: 1

If 9.05 moles of ozone is formed in a storm then the mass of ozone is

1. 435g
2. 450g
3. 434.4g
4. 480g

✅ Correct Answer: 3

Ca on losing 2 electrons becomes

1. Ca-2
2. Ca-1
3. Ca+2
4. Ca-2

✅ Correct Answer: 3

Biochemistry deals with

1. physical changes in living organisms only
2. chemical changes in living organisms only
3. genetically changes in living organisms
4. physical and chemical changes in living organisms

✅ Correct Answer: 4

Biochemistry deals with

1. Ca-2
2. Ca-1
3. Ca+2
4. Ca-2

✅ Correct Answer: 4