CBSE Class 10 Chemistry Exam Oriented MCQs
CBSE Class 10 Chemistry – Exam Oriented MCQs
Class: 10 | Subject: Science (Chemistry)
Section: Exam Oriented
Topic: CBSE Class 10 Chemistry Exam Oriented MCQs
Based on Latest CBSE Board Examination Pattern
Section: Exam Oriented
Topic: CBSE Class 10 Chemistry Exam Oriented MCQs
Based on Latest CBSE Board Examination Pattern
These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 10 Science Board Examinations.
1. The pH of a neutral solution at 25°C is:
Answer: B
pH 7 indicates neutrality where concentration of H⁺ and OH⁻ ions are equal.
pH 7 indicates neutrality where concentration of H⁺ and OH⁻ ions are equal.
2. Which gas is released when zinc reacts with dilute HCl?
Answer: B
Metal + Acid → Salt + Hydrogen gas. Zinc forms ZnCl₂ and releases H₂.
Metal + Acid → Salt + Hydrogen gas. Zinc forms ZnCl₂ and releases H₂.
3. Oxidation is:
Answer: B
Oxidation involves loss of electrons or addition of oxygen/removal of hydrogen.
Oxidation involves loss of electrons or addition of oxygen/removal of hydrogen.
4. Baking soda formula is:
Answer: B
Sodium hydrogen carbonate is used in baking powder and antacids.
Sodium hydrogen carbonate is used in baking powder and antacids.
5. Ethanol belongs to which homologous series?
Answer: B
Ethanol contains –OH functional group, characteristic of alcohols.
Ethanol contains –OH functional group, characteristic of alcohols.
6. Rusting requires:
Answer: C
Iron reacts with oxygen in presence of moisture forming hydrated iron oxide.
Iron reacts with oxygen in presence of moisture forming hydrated iron oxide.
7. Functional group of carboxylic acids:
Answer: C
Carboxyl group determines acidic properties.
Carboxyl group determines acidic properties.
8. Hard water does not lather with soap due to:
Answer: B
These ions form insoluble precipitates with soap.
These ions form insoluble precipitates with soap.
9. LPG mainly contains:
Answer: B
These hydrocarbons are easily liquefied fuels.
These hydrocarbons are easily liquefied fuels.
10. Universal indicator shows:
Answer: A
It gives different colors for full pH scale.
It gives different colors for full pH scale.
11. Alloy of copper & tin:
Bronze – harder and corrosion resistant.
12. Strongest reducing agent:
Carbon – removes oxygen from metal oxides.
13. Graphite conducts electricity because:
It has free delocalized electrons.
14. Diamond is hard due to:
3D covalent bonding network.
15. Soap is prepared by:
Saponification of fats.
16. Acid + Base →
Salt + Water (Neutralization).
17. Metal extracted by electrolysis:
Aluminium – highly reactive.
18. pH less than 7:
Acidic solution.
19. Vinegar contains:
Acetic acid.
20. Esterification forms:
Ester + Water (acid + alcohol).