MCQ Test

MCQ – Class 10 (science)

Q1. What is a chemical reaction?

A. A process where new substances are formed.
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q2. What is a chemical equation?

A. Representation of chemical reaction using symbols.
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q3. What is a balanced equation?

A. Atoms are equal on both sides.
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q4. What is oxidation?

A. Gain of oxygen or loss of hydrogen.
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q5. What is reduction?

A. Loss of oxygen or gain of hydrogen.
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q6. What is corrosion?

A. Slow destruction of metals.
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q7. Example of corrosion?

A. Rusting of iron.
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q8. What is rancidity?

A. Spoilage of food due to oxidation.
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q9. Why are reactions important?

A. They are part of daily life.
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q10. What is a reactant?

A. Substance taking part in reaction.
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q11. What is oxidation?

A. Loss of electrons.
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q12. What is reduction?

A. Gain of electrons.
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q13. Chemical formula of washing soda?

A. Na₂CO₃·10H₂O
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q14. pH of acidic solution?

A. Less than 7
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q15. Unit of electric current?

A. Ampere
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q16. Ohm’s Law?

A. V = IR
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q17. Power formula?

A. P = VI
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q18. Human chromosome pairs?

A. 23 pairs
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q19. Functional unit of kidney?

A. Nephron
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A

Q20. Greenhouse gas example?

A. Carbon dioxide
B. Not related to the question
C. Partially correct statement
D. None of the above

Correct Answer: A