Chemistry & Materials

JKSSB Finance Accounts Assistant · General Science · 8 practice questions with answers and explanations: 3 Easy, 3 Medium, 2 Hard.

Sample questions

Sample Easy question 1

Non-metals, compared to metals, are generally:

  1. Good conductors of electricity
  2. Poor conductors of heat and electricity, often brittle
  3. Always malleable
  4. Always shiny/lustrous
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Answer: B. Non-metals are typically poor conductors of heat and electricity, and solid non-metals tend to be brittle rather than malleable.

Sample Medium question 2

Which of the following metals is typically stored in kerosene because of its high reactivity with air and water?

  1. Iron
  2. Sodium
  3. Copper
  4. Gold
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Answer: B. Sodium is highly reactive with air and water and is typically stored under kerosene to prevent reaction.

Sample Hard question 3

Mercury is unusual among metals mainly because it is:

  1. Liquid at room temperature
  2. Non-conductive
  3. Non-reactive with everything
  4. The most abundant metal
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Answer: A. Mercury is the only metal that is liquid at room temperature, unlike most other metals which are solid.

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