Increasing and Decreasing Functions MCQs
Increasing and Decreasing Functions MCQs
Class: CBSE Class 12 Mathematics
Subject: Mathematics
Section: Applications of Derivatives
Topic: Increasing and Decreasing Functions
Board: CBSE Board Examinations
Subject: Mathematics
Section: Applications of Derivatives
Topic: Increasing and Decreasing Functions
Board: CBSE Board Examinations
Instructions: These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 12 Board Examination standard practice.
Q1. A function is increasing when:
Answer: A
Explanation: Positive derivative ⇒ rising function.
Explanation: Positive derivative ⇒ rising function.
Q2. A function is decreasing when:
Answer: B
Explanation: Negative slope ⇒ decreasing.
Explanation: Negative slope ⇒ decreasing.
Q3. If f'(x)=0 in interval, function is:
Answer: C
Explanation: Zero rate of change.
Explanation: Zero rate of change.
Q4. Critical point occurs when:
Answer: A
Explanation: Stationary point.
Explanation: Stationary point.
Q5. Sign chart helps to determine:
Answer: A
Explanation: Derivative sign analysis.
Explanation: Derivative sign analysis.
Q6. If f'(x)>0 then tangent slope:
Answer: A
Explanation: Upward slope.
Explanation: Upward slope.
Q7. If f'(x)<0 then graph:
Answer: B
Explanation: Downward slope.
Explanation: Downward slope.
Q8. Increasing interval determined by:
Answer: A
Explanation: First derivative test.
Explanation: First derivative test.
Q9. Decreasing interval determined by:
Answer: A
Explanation: First derivative sign.
Explanation: First derivative sign.
Q10. Horizontal tangent when:
Answer: A
Explanation: Zero slope point.
Explanation: Zero slope point.
Q11. Monotonic increasing means:
Answer: A
Explanation: Positive derivative throughout.
Explanation: Positive derivative throughout.
Q12. Monotonic decreasing means:
Answer: B
Explanation: Negative derivative throughout.
Explanation: Negative derivative throughout.
Q13. Local maxima occurs when derivative changes:
Answer: A
Explanation: Peak point.
Explanation: Peak point.
Q14. Local minima occurs when derivative changes:
Answer: B
Explanation: Valley point.
Explanation: Valley point.
Q15. First derivative test finds:
Answer: A
Explanation: Increasing/decreasing behavior.
Explanation: Increasing/decreasing behavior.
Q16. If derivative undefined, point may be:
Answer: A
Explanation: Possible extremum.
Explanation: Possible extremum.
Q17. Increasing graph slope:
Answer: A
Explanation: Upward trend.
Explanation: Upward trend.
Q18. Decreasing graph slope:
Answer: B
Explanation: Downward trend.
Explanation: Downward trend.
Q19. Stationary point means:
Answer: A
Explanation: Tangent horizontal.
Explanation: Tangent horizontal.
Q20. Increasing/decreasing study belongs to:
Answer: A
Explanation: Core derivative application.
Explanation: Core derivative application.