Matter in Our Surroundings (9 Science)
Matter is everything around us that has mass and volume. Understanding the properties of matter helps us comprehend the physical world.
TL;DR: Matter is everything around us that has mass and volume. Understanding the properties of matter helps us comprehend the physical world.
Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated
Matter is everything around us that has mass and volume. Understanding the properties of matter helps us comprehend the physical world.
Matter in Our Surroundings MCQs with Answers & Explanations
Q1. What are the three states of matter?
- Solid, liquid, gas ✓ (correct)
- Solid, liquid, plasma
- Hot, cold, warm
- Visible, invisible, transparent
Q2. Which state of matter has a definite shape and definite volume?
- Gas
- Liquid
- Solid ✓ (correct)
- Plasma
Q3. What is the process of conversion of solid to liquid called?
- Evaporation
- Melting ✓ (correct)
- Sublimation
- Condensation
Q4. What is the process of conversion of liquid to gas called?
- Melting
- Freezing
- Evaporation ✓ (correct)
- Deposition
Q5. What is boiling?
- Evaporation at surface only
- Rapid evaporation throughout the liquid at fixed temperature ✓ (correct)
- Freezing of liquid
- Melting of solid
Q6. What is sublimation?
- Liquid to gas
- Solid to liquid
- Solid to gas directly ✓ (correct)
- Gas to liquid
Q7. What is the freezing point of water?
- 0 degrees Celsius ✓ (correct)
- 100 degrees Celsius
- -10 degrees Celsius
- 4 degrees Celsius
Q8. What is the boiling point of water?
- 0 degrees Celsius
- 50 degrees Celsius
- 100 degrees Celsius ✓ (correct)
- 200 degrees Celsius
Q9. What is density?
- Weight of object
- Volume of object
- Mass per unit volume ✓ (correct)
- Area of object
Q10. Why does ice float on water?
- Ice is lighter
- Ice has lower density than water ✓ (correct)
- Water pushes ice up
- Ice takes less space
Frequently Asked Questions
What is the difference between evaporation and boiling?
Evaporation occurs at any temperature at the surface of liquid, while boiling is rapid evaporation throughout the liquid at a specific boiling point temperature.
Why does matter change its state?
Matter changes state due to changes in temperature and pressure. When temperature increases, particles gain kinetic energy and can overcome intermolecular forces, leading to state change.
More 9 Science MCQs
- Light Reflection and Refraction
- Electricity
- Acids Bases and Salts
- Life Processes
- Carbon and its Compounds
- Metals and Non-metals
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