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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
Thermal decompositionof calcium carbonate produces a gas.
Question # 2
Law of conservation of mass put forward in.
Question # 3
The chemicla reaction during which a compound splits up into two or more simple substanes, is called.
Question # 4
Carbon burns in air to release energy along with the formation of.
Question # 5
The equation in which the number of atoms of each element on both sides are not equal is called.
Question # 6
Heating of solid potassium chlorate produces a gas.
Question # 7
The product fo the reaction between zinc and dilute sulphuric acid are.
Question # 8
When methane is burnt in air, CO2 and.......... are formed.
Question # 9
Symbol and formulae of the reactants are written on....... side fo arrow.
Question # 10
How many oxygen atoms are present in onw molecule of Mg(HCO3)2
8th General Science English Medium Chapter 6 Test
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| Sr.# | Question | Answer |
|---|---|---|
| 1 | When methane is burnt in air, CO2 and.......... are formed. |
A. O2
B. H2O
C. Glucose
D. Energy
|
| 2 | Exothermic reaction ae those reactions durng which heat is. |
A. Given out
B. Remain same
C. Absorbed
D. Used
|
| 3 | How many oxygen atoms are present in onw molecule of Mg(HCO3)2 |
A. 2
B. 4
C. 6
D. 8
|
| 4 | Substancs whihc take part in a chemical reaction are called. |
A. Products
B. Ractants
C. Elements
D. Compunds
|
| 5 | During photosynthesis in plants, carbon dioxide CO2 and water react to produce. |
A. Water
B. Energy
C. Glucoe
D. CO2
|
| 6 | Law of conservation of mass put forward in. |
A. 1783
B. 1784
C. 1785
D. 1786
|
| 7 | During a chemical reaction, total mass of the product is equal to the total mass of reactants, this is a statements of. |
A. Law of conservation of momentum
B. Law of conservation of energy
C. Law of conseration of mass
D. Law of conseration of acceleration
|
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