“Top 20 Most Repeated Class 10 Board Exam MCQs with Answers | 2025 Exam Preparation”

 “Top 20 Most Repeated Class 10 Board Exam MCQs with Answers | 2025 Exam Preparation”

Preparing for Class 10 board exams? Boost your exam preparation with this ultimate collection of 20 most repeated MCQs with answers and explanations. These questions are carefully selected from past board papers and are highly important for subjects like Science, Mathematics, Social Science, and General Knowledge. Practicing these MCQs will help students strengthen their concepts, improve accuracy, and score higher marks in exams. At MCQJourney.com, we provide exam-focused MCQs, GK updates, and current affairs to make learning easy and effective. This post is designed to be SEO-friendly, keyword-optimized, and student-centric, ensuring maximum visibility for learners searching for Class 10 board exam MCQs, repeated questions, and exam preparation tips. Whether you are revising last-minute or building a strong foundation, these MCQs with detailed explanations will guide you toward success. Stay ahead in your preparation with MCQ Journey – your trusted education blog for exams, GK, and current affairs.

🔑 20 Most Repeated MCQs for Class 10 Board Exams

1. Which gas is released during photosynthesis?

• (A) Oxygen

• (B) Carbon dioxide

• (C) Nitrogen

• (D) Hydrogen ✅ Answer: (A) Oxygen

• 2. The SI unit of electric current is:

• (A) Volt

• (B) Ampere

• (C) Ohm

• (D) Watt ✅ Answer: (B) Ampere
  

3. Who is known as the Father of the Indian Constitution?

• (A) Mahatma Gandhi

• (B) B.R. Ambedkar

• (C) Jawaharlal Nehru

• (D) Rajendra Prasad ✅ Answer: (B) B.R. Ambedkar
  

4. Which planet is known as the Red Planet?

• (A) Venus

• (B) Mars

• (C) Jupiter

• (D) Saturn ✅ Answer: (B) Mars
  

5. The chemical formula of quicklime is:

• (A) CaCO₃

• (B) CaO

• (C) Ca(OH)₂

• (D) MgO ✅ Answer: (B) CaO
  

6. Which is the largest organ in the human body?

• (A) Heart

• (B) Liver

• (C) Skin

• (D) Lungs ✅ Answer: (C) Skin
  

7. The value of π (pi) up to two decimal places is:

• (A) 3.12

• (B) 3.14

• (C) 3.15

• (D) 3.16 ✅ Answer: (B) 3.14
  

8. Who discovered the cell?

• (A) Robert Hooke

• (B) Charles Darwin

• (C) Isaac Newton

• (D) Louis Pasteur ✅ Answer: (A) Robert Hooke
  

9. Which is the hardest natural substance?

• (A) Iron

• (B) Diamond

• (C) Gold

• (D) Platinum ✅ Answer: (B) Diamond
  

10. The capital of Japan is:

• (A) Beijing

• (B) Tokyo

• (C) Seoul

• (D) Bangkok ✅ Answer: (B) Tokyo
  

11. Which law explains the relationship between current, voltage, and resistance?

• (A) Newton’s Law

• (B) Ohm’s Law

• (C) Boyle’s Law

• (D) Hooke’s Law ✅ Answer: (B) Ohm’s Law
  

12. The smallest unit of matter is:

• (A) Atom

• (B) Molecule

• (C) Proton

• (D) Neutron ✅ Answer: (A) Atom
  

13. Which Mughal emperor built the Taj Mahal?

• (A) Akbar

• (B) Shah Jahan

• (C) Aurangzeb

• (D) Babur ✅ Answer: (B) Shah Jahan
  

14. The process of conversion of water vapor into liquid is called:

• (A) Evaporation

• (B) Condensation

• (C) Sublimation

• (D) Precipitation ✅ Answer: (B) Condensation
  

15. Which blood group is called the universal donor?

• (A) A

• (B) B

• (C) AB

• (D) O ✅ Answer: (D) O
  

16. The currency of the USA is:

• (A) Pound

• (B) Dollar

• (C) Yen

• (D) Euro ✅ Answer: (B) Dollar
  

17. The speed of light in vacuum is approximately:

• (A) 3 × 10⁸ m/s

• (B) 3 × 10⁶ m/s

• (C) 3 × 10⁵ m/s

• (D) 3 × 10⁴ m/s ✅ Answer: (A) 3 × 10⁸ m/s
  

18. The national animal of India is:

• (A) Lion

• (B) Tiger

• (C) Elephant

• (D) Peacock ✅ Answer: (B) Tiger
  

19. Which organ purifies blood in the human body?

• (A) Heart

• (B) Kidney

• (C) Liver

• (D) Lungs ✅ Answer: (B) Kidney
  

20. The first Prime Minister of India was:

• (A) Mahatma Gandhi

• (B) Jawaharlal Nehru

• (C) Sardar Patel

• (D) Rajendra Prasad ✅ Answer: (B) Jawaharlal Nehru

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