
physical and chemical change class 7
Authored by BHAVYA K
Chemistry
7th Grade
NGSS covered
Used 46+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a physical change?
Rusting of iron
Melting of wax
Combustion of magnesium ribbon
Burning of candle
Tags
NGSS.MS-PS1-4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A chemical change may involve
Change in color only
Change in temperature only
Evolution of gas only
Any or all of the above
Tags
NGSS.MS-PS1-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following processes is used to prevent articles from rusting?
Crystallization
Galvanization
Evaporation
Electolysis
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following changes is accompanied by sound?
Photosynthesis
Spoilage of food
Explosion of fire works
Crumpling of paper
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Choose the chemical change among the following
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hydrochloric acid is added to a beaker containing a piece of zinc. Zinc chloride is formed and hydrogen gas is released.This is an example of:
chemical reaction
physical change
crystallisation
none of these
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Name the gas which turns lime water milky.
carbon dioxide
oxygen
nitrogen
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