6th Chapter

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.

8th Class Science Chapter 6 MCQ Test With Answer for Science chapter 6

8th Class Science Chapter 6 MCQ Test With Answer for Science chapter 6

Sr. # Questions Answers Choice
1 Heating of solid potassium chlorate produces a gas.
  • A. Chlorine
  • B. Carbon dioxide
  • C. Carbon mono oxide
  • D. Oxygen
2 The reaction between calcium oxide and carbon dioxide to form calcium carbonate is an example of.
  • A. Decomposition reaction
  • B. Addition reaction
  • C. Acid-Base reaction
  • D. Neutralizaion reaction
3 Thermal decompositionof calcium carbonate produces a gas.
  • A. Oxygen
  • B. Carbon di oxide
  • C. Nitrogen
  • D. Carbon monoxide
4 The equation in which the number of atoms of each element on both sides are not equal is called.
  • A. Quadratic equation
  • B. Unbalanced equation
  • C. Balanced equation
  • D. Standard equation
5 Law fo conservation of mass was put forward by
  • A. Newton
  • B. Plank's
  • C. Lavoisier
  • D. Einstein
6 How many oxygen atoms are present in onw molecule of Mg(HCO3)2
  • A. 2
  • B. 4
  • C. 6
  • D. 8
7 Fire works is an example of ........... reactions.
  • A. Addition
  • B. Exothermic
  • C. Endothermic
  • D. Decomposition
8 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
9 Substancs whihc take part in a chemical reaction are called.
  • A. Products
  • B. Ractants
  • C. Elements
  • D. Compunds
10 When methane is burnt in air, CO2 and.......... are formed.
  • A. O2
  • B. H2O
  • C. Glucose
  • D. Energy

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    21 May 2024

    good

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    14 Oct 2019

    informative

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    20 Dec 2017

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