Download App

Physical and Chemical Changes — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7SciencePhysical and Chemical Changes1 Mark
MCQ
Which is an example of a chemical change?
  • A
    The melting of ice
  • ✓
    The burning of wood
  • C
    The grindig of salt crystals powder
  • D
    The evaporation of water from a sea
✓

Answer

Correct option: B.
The burning of wood
A change in which a new substance is formed is called a chemical change.
Examples of chemical change are digestion of food, ripening of fruit, burning of wood.
The burning of wood is a chemical change because it is always accompanied by the production of heat.
Melting of ice grinding of salt crystals to powder and evaporation of water from the sea are all physical changes because no new substances are formed.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ (1 Marks)" from Physical and Chemical Changes→Physical and Chemical Changes — all question types→Science STD 7 question papers→Gujarat Board STD 7 question papers→Gujarat Board question paper generator→

Similar questions

The disease caused by anthrax is:
→
Which thermometer is used to measure our body temperature?
→
The average of adult blood pressure is:
→
Magnesium hydroxide, obtained when Magnesium oxide is dissolved in water, is:
→
Which of the following is an example of physical change?
→
Which Of The Following Statement Is Or Are Incorrect?
→
Which of the following shows symbiotic relationship $?$
→
Which part of the plant gets carbon dioxide from the air for photosynthesis?
→
What is fleece?
→
Wastewater released from home, industries, hospitals is called as:
→