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 Multiple Choice QuestionsMultiple Choice Questions

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1.

Which among the following is present inside the nucleus of an atom?

  • Protons and Neutrons

  • Electrons and Protons

  • Neutrons and Electrons

  • Neutrons, Protons, Electrons


2.

What is baking soda?

  • Aluminium bicarbonate

  • Sodium isolate

  • Sodium bicarbonate

  • Aluminium sulphate


3.

Which among the following elements is a liquid at room temperature?

  • Phosphorus

  • Mercury

  • Sodium

  • Aluminium


4.

Which among the following is an endothermic reaction?

  • Respiration

  • Combustion

  • Sweating

  • Burning of natural gas

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5.

Which among the following has maximum density?

  • Water

  • Ice

  • Ethylene

  • Arthropoda

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6.

What happen in an oxidation reaction?

  • Protons are lost

  • Electrons are lost

  • Neutrons are lost

  • Electrons are gained

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7.

Which of the process is known as nitrification?

  • Reaction of nitrogen monoxide with oxygen to form nitric acid

  • Reaction of nitrogen dioxide with water to form nitric acid

  • Conversion of ammonia to nitrites

  • Conversion of ammonia to nitrites

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8.

Catalytic converters are generally made from

  • carbon

  • alkaline metals

  • transition metals

  • transition metals

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9.

The soft silvery metallic element which ionizes easily when heated or exposed to light and is present in atomic clocks is

  • Calcium

  • Cesium

  • Cerium

  • Cerium

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10.

The total energy of an electron inside an atom is

  • zero

  • more than zero

  • less than zero

  • less than zero

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