Physical and chemical changes
Authored by ANWESHA JAIN 6058
Chemistry
7th - 8th Grade
Used 412+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
It is not dangerous to look at burning magnesium for too long.
True
False
2.
MULTIPLE SELECT QUESTION
15 mins • 1 pt
What is the other name for blue vitriol?
Copper sulphate
Magnesium hydroxide
Sulphuric acid
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What do carbon dioxide and lime water produce when they react with each other?
CaCO3
MgO
CacO3
CaCO3+water
4.
FILL IN THE BLANK QUESTION
15 mins • 1 pt
Chemical name for magnesium hydroxide is :
(a)
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Choose the incorrect statement
Ships suffer a lot of damage though they are painted
Stretching of rubber band is a chemical change
Formation of biogas is a chemical change
Burning of candle is both physical and Chemical change
Both b and d
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which of the following is not a physical property of a substance ?
Shape
Color
Density
Flammability
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is galvanisation?
Painting with oil
Process of depositing a layer of zinc on iron
Process of depositing a layer of iron on zinc
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