Driver Everyday Science MCQs Police Department Sindh Police Department STS SIBA Past Papers

A reaction in which heat energy is absorbed to the system is called:

  • Exothermic Reaction
  • Endothermic Reaction
  • Elimination Reaction
  • Thermite Reaction
  • b
  • A reaction in which heat energy is released is called Exothermic Reaction.
    The removal or leaving of atom or group of atoms of molecule is called Elimination Reaction.

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Driver Everyday Science MCQs Police Department Sindh Police Department STS SIBA Past Papers

Which one among the following surfaces gives diffused reflection?

  • Polished Metal Surface
  • Calm Surface of Lake
  • Mirror
  • Roadway
  • d
  • Diffused Reflection is also called Irregular Reflection.
    Reflection from Roadway, Desert Sand and Disturbed Water are called Diffused Reflection. In Short, Reflection from rough or harsh surface is called Diffused Reflection.
    Reflection from a smooth surface like a Mirror, Glass or Polished Surface is called Regular Reflection.

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Driver Mathematics MCQs Police Department Sindh Police Department STS SIBA Past Papers

A Selena had 204 stamps in her collection. She bought 47 more stamps. If she gave 38 stamps to her brother, how many stamps does Selena have now?

  • 119
  • 195
  • 213
  • 299
  • c
  • Initially Collection of Salena=204
    Purchase=47
    Total Stam Collection=204+47=251
    She gave stamps to her brother=38
    Remaining Stamps=251-38=213

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