Welcome To My School Study
Practice 5 important Class 10 Science MCQs based on NCERT concepts. Test your knowledge of chemical reactions, autotrophic nutrition, amphoteric oxides, life processes, and plane mirrors.
Do You Know
Chapter Information
- Class: 10
- Subject: Science
- Quiz Type: Multiple Choice Questions
- Total Questions: 5
Introduction
This Class 10 Science quiz covers important concepts from Chemical Reactions and Equations, Life Processes, Acids, Bases and Salts, and Light – Reflection and Refraction. Each question includes an exam-focused description to help you understand the concept.
What You Will Learn
- Physical and chemical changes
- Requirements of autotrophic nutrition
- Amphoteric oxides
- Regulation of life processes
- Image formation by a plane mirror
Q1. Which of the following processes does not involve a chemical reaction?
A) Burning of candle wax
B) Melting of candle wax on heating
C) Digestion of food in our body
D) Process of respiration
Answer: Melting of candle wax on heating
Description for Exam:
Melting of candle wax is a physical change because the wax changes from solid to liquid without forming a new substance. Burning of wax, digestion, and respiration involve chemical changes.
explanation:
- Changes in substances are of two types: physical and chemical.
- In a physical change, no new substance is formed (only shape or state changes).
- When candle wax is heated, it changes from solid to liquid.
- The substance is still wax — nothing new is formed.
- This change can also be reversed by cooling (liquid → solid).
Conclusion:
Melting of wax is a physical change, so it does NOT involve a chemical reaction.
Q2. The image formed by a plane mirror is always:
A) Real and inverted
B) Real and erect
C) Virtual and erect
D) Virtual and inverted
Answer: Virtual and erect
Description for Exam:
A plane mirror forms an image that is virtual, erect, and laterally inverted. The image appears behind the mirror and cannot be obtained on a screen.
explanation:
- A plane mirror reflects light to form an image.
- The image appears behind the mirror, but light does not actually come from there.
- Such an image is called virtual (cannot be caught on a screen).
- The image is also upright (erect), not upside down.
- Additionally, it is the same size as the object and shows left-right reversal (lateral inversion).
Conclusion:
A plane mirror always forms a virtual and erect image.
Q3. Which of the following is an example of an amphoteric oxide?
A) $$K_2O$$
B) $$MgO$$
C) $$Na_2O$$
D) $$Al_2O_3$$
Answer: $$Al_2O_3$$
Description for Exam:
An amphoteric oxide can react with both acids and bases. Aluminium oxide ($$Al_2O_3$$) is a common example of an amphoteric oxide.
explanation:
- Oxides are classified as acidic, basic, or amphoteric.
- Amphoteric oxides can react with both acids and bases.
- Aluminium oxide (Al₂O₃) shows this special property.
- Example:
- With acid → behaves like a base
- With base → behaves like an acid
Conclusion:
Al₂O₃ is an amphoteric oxide because it reacts with both acids and bases.
Q4. The autotrophic mode of nutrition requires:
A) Sunlight
B) Carbon dioxide and water
C) All of the above
D) Chlorophyll
Answer: All of the above
Description for Exam:
Green plants prepare their own food through photosynthesis. This process requires sunlight, chlorophyll, carbon dioxide, and water. Therefore, all the given requirements are involved.
explanation:
- Autotrophic nutrition means organisms make their own food.
- Plants prepare food by the process of photosynthesis.
- For this process, they need:
- Carbon dioxide (from air)
- Water (from soil)
- Chlorophyll (green pigment in leaves)
- Sunlight (energy source)
- All these factors work together to produce food (glucose).
Conclusion:
All given options are required, so the correct answer is All of the above.
Q5. In humans, the life processes are controlled and regulated by:
A) Nervous and endocrine systems
B) Nervous and circulatory systems
C) Reproductive and endocrine systems
D) Endocrine and digestive systems
Answer: Nervous and endocrine systems
Description for Exam:
The nervous system coordinates rapid responses and controls various body activities, while the endocrine system uses hormones to regulate important functions. Together, they help control and coordinate life processes.
explanation:
- The body needs control systems to manage activities like movement, growth, and digestion.
- The nervous system works through nerves and gives quick responses (like touching a hot object).
- The Endocrine system works through hormones and gives slow but long-lasting effects (like growth, puberty).
- Both systems coordinate and regulate all life processes together.
Conclusion:
Human life processes are controlled by both nervous and endocrine systems.
Important Concepts
- Physical change: No new substance is formed.
- Photosynthesis: Plants use light energy to prepare food.
- Amphoteric oxide: Reacts with both acids and bases.
- Nervous system: Provides rapid control and coordination.
- Plane mirror: Forms a virtual and erect image.
Exam Tips
- Do not confuse melting with burning of wax.
- Remember the four important requirements of photosynthesis.
- $$Al_2O_3$$ is an important example of an amphoteric oxide.
- Plane-mirror image is virtual and erect.
Quick Revision
Melting wax → Physical change
Autotrophic nutrition → Sunlight + chlorophyll + CO₂ + water
Amphoteric oxide → $$Al_2O_3$$
Control and coordination → Nervous + endocrine systems
Plane mirror → Virtual + erect image
Common Mistakes
- Melting candle wax is not a chemical reaction.
- $$Al_2O_3$$ should not be confused with basic oxides such as $$Na_2O$$.
- A plane mirror does not produce a real image.
FAQs
Q1. Is melting candle wax a chemical change?
No. It is a physical change.
Q2. What is an amphoteric oxide?
An oxide that can react with both acids and bases.
Q3. Which systems regulate life processes in humans?
The nervous and endocrine systems.
Q4. What type of image does a plane mirror form?
A virtual and erect image.
Key Takeaway
These five questions revise important NCERT-based concepts from different Class 10 Science topics and are useful for quick exam preparation.
NCERT Reference
Related links
- Class 10 Maths Chapter 3 Pair of Linear Equations in Two Variables part-18
- Class 10 Social Science Chapter 1 The Rise of Nationalism in Europe part-5
- Class 10 Maths Chapter 3 Pair of Linear Equations in Two Variables part-17
- Class 10 Science Chapter 1 Chemical Reactions and Equations part-5
- Class 10 English Chapter 1 A Triumph of Surgery part-2
- Class 10 Science Chapter 1 Chemical Reactions and Equations part-4
- Class 10 Social Science Chapter 1 The Rise of Nationalism in Europe part-3
- Class 10 Maths Chapter 3 Pair of Linear Equations in Two Variables part-16
- Class 10 Social Science Chapter 1 The Rise of Nationalism in Europe part-2
- Class 10 Science Chapter 1 Chemical Reactions and Equations part-4
- Class 10 Maths Chapter 3 Pair of Linear Equations in Two Variables part-15
- Class 10 English Chapter 1 A Triumph of Surgery part-1
Latest Posts
- Class 9 Maths Chapter 4 Linear Equations in Two Variables
- Class 7 Maths Chapter 4 Simple Equations
- Class 8 Maths Chapter 4 Practical Geometry
- Class 10 Maths Chapter 4 Quadratic Equations
- Class 9 Science Chapter 1 Matter in Our Surroundings
Join Our Other Communities
Instagram , Youtube , Facebook
