Chemical Substances & Processes

Quiz
•
Science
•
7th Grade
•
Medium
Standards-aligned
Aarti Chopra
Used 419+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The chemical formula of Calcium Chloride is-
CaCl2
Ca2Cl
CaCl
None
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following is not a pure substance?
Iron
Rain water
Air
Oxygen gas
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The symbol of carbonate ion is -
CO3
CO3-2
CO2-3
CO32+
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
When iron rod is dipped in copper sulphate solution the following observations can be observed-
The change of colour of solution from red to blue and brown coating on iron nail
The change of colour of solution from green to blue and grey coating on iron nail.
The change of colour of solution from blue to green and brown coating on iron nail
The change of colour of solution from blue to green and black coating on iron nail
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following is not a chemical change?
Photosynthesis
Digestion of food
Respiration in plants and animals
Breaking of glass
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The products of Neutralisation reaction are-
Acid, water
Base, salt
Base, water
Salt, water
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Fe (s) + CuSO4 -> FeSO4 + Cu.
This is _______________ reaction.
Addition reaction
Displacement reaction
Decomposition reaction
Neutralization reaction
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