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Matter

Test your knowledge of fundamental chemistry concepts including elements, compounds, mixtures, and atomic structure

5 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following statements is false?

  1. Metals like copper, silver, and gold are used to make coins.
  2. Iodine and ammonia are sublimating substances.
  3. Nitrogen is a diatomic molecule.
  4. A mixture is pure where as a compound is impure.
  5. The chemical formula of tin oxide is SnO.
Question 2 Multiple Choice (Single Answer)

Which of the following statements is false about a compound, which is combined in the fixed proportion?

  1. 4 grams of hydrogen combine with 32 grams of oxygen to give 36 grams of water.
  2. In the molecule of carbon dioxide, carbon and oxygen are present in fixed ratio of 3 : 8 by mass.
  3. In the molecule of water, hydrogen and oxygen are present in the ratio of 1 : 8.
  4. 12 grams of carbon combine with 32 grams of oxygen to give 40 grams of carbon dioxide.
  5. In the molecule of carbon monoxide (CO), the ratio of carbon and oxygen is 3 : 8.
Question 3 Multiple Choice (Single Answer)

Which of the following statements regarding an element is false?

  1. Elements combine randomly to form a compound.
  2. Elements are represented by symbols.
  3. The atoms of an element are different from atoms of other elements.
  4. The number of atoms present in a molecule of an element is known as the atomicity of the element.
  5. A compound can be split into simpler substances or elements.
Question 4 Multiple Choice (Single Answer)

What is the Latin name of sodium?

  1. Aurum
  2. Natrium
  3. Stannous
  4. Plumbum
  5. Kalium
Question 5 Multiple Choice (Single Answer)

Which of the following molecules contains the same kind of atoms?

  1. Hyposulphite of soda
  2. Laughing gas
  3. Quartz
  4. Washing soda
  5. Hydrargyrum
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