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8th Class General Science Chapter 6 Online Test
8th Class English Medium Subjects
8th Class Urdu Medium Subjects
MCQ's Test For Chapter 6 "General Science 8th Class English Medium Chapter 6 Online Test"
Try The MCQ's Test For Chapter 6 "General Science 8th Class English Medium Chapter 6 Online Test"
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Total Questions10
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Time Allowed10
General Science 8th Class English Medium Chapter 6 Online Test
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Question # 1
Exothermic reaction ae those reactions durng which heat is.
Question # 2
The chemicla reaction during which a compound splits up into two or more simple substanes, is called.
Question # 3
How many oxygen atoms are present in onw molecule of Mg(HCO3)2
Question # 4
Heating of solid potassium chlorate produces a gas.
Question # 5
During photosynthesis in plants, carbon dioxide CO2 and water react to produce.
Question # 6
The reaction between calcium oxide and carbon dioxide to form calcium carbonate is an example of.
Question # 7
The product fo the reaction between zinc and dilute sulphuric acid are.
Question # 8
Thermal decompositionof calcium carbonate produces a gas.
Question # 9
Law of conservation of mass put forward in.
Question # 10
Fire works is an example of ........... reactions.
8th General Science English Medium Chapter 6 Test
Here you can prepare 8th General Science English Medium Online MCQ's Test. Click the button for 8th General Science English Medium Chapter 6 100% free full practice test.
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8th Class General Science (English Medium) Chapter 6 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | When methane is burnt in air, CO2 and.......... are formed. |
A. O2
B. H2O
C. Glucose
D. Energy
|
| 2 | The chemicla reaction during which a compound splits up into two or more simple substanes, is called. |
A. Additon reaction
B. Decomposition
C. Replacement reaction
D. Balanced reaction
|
| 3 | Exothermic reaction ae those reactions durng which heat is. |
A. Given out
B. Remain same
C. Absorbed
D. Used
|
| 4 | Substancs whihc take part in a chemical reaction are called. |
A. Products
B. Ractants
C. Elements
D. Compunds
|
| 5 | Heating of solid potassium chlorate produces a gas. |
A. Chlorine
B. Carbon dioxide
C. Carbon mono oxide
D. Oxygen
|
| 6 | Carbon burns in air to release energy along with the formation of. |
A. Carbon dioxide and hydrogen
B. Carbon monoxide and hydrogen
C. Carbon di oxide
D. Carbon dioixe and water
|
| 7 | During photosynthesis in plants, carbon dioxide CO2 and water react to produce. |
A. Water
B. Energy
C. Glucoe
D. CO2
|
| 8 | Symbol and formulae of the reactants are written on....... side fo arrow. |
A. Left
B. Right
C. Upward
D. Both side
|
| 9 | Thermal decompositionof calcium carbonate produces a gas. |
A. Oxygen
B. Carbon di oxide
C. Nitrogen
D. Carbon monoxide
|
| 10 | Fire works is an example of ........... reactions. |
A. Addition
B. Exothermic
C. Endothermic
D. Decomposition
|
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