Chemistry & Materials

JKSSB Panchayat Account Assistant · 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. Always shiny and lustrous, with a smooth metallic appearance
  2. Good conductors of heat and electricity, and generally malleable
  3. Always malleable and ductile, so they can be beaten into thin sheets
  4. Poor conductors of heat and electricity, often brittle
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Answer: D. 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. Gold
  2. Iron
  3. Copper
  4. Sodium
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Answer: D. 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. The most abundant metal
  2. Non-conductive
  3. Liquid at room temperature
  4. Non-reactive with everything
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Answer: C. Mercury is the only metal that is liquid at room temperature, unlike most other metals which are solid.

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