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Everyday Science Most Important MCQs Six

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One gram of carbohydrates give energy of the amount?
  • A. 2 K Calories
  • B. 4.1 K Calories
  • C. 6.3 K Calories
  • D. 8.0 K Calories
The alloy of aluminium used for making magnet is __________?
  • A. Duralumin
  • B. Y-Alloy
  • C. Alnico
  • D. Aluminium bronze
Which one of the following gases is readily soluble in water at room temperature?
  • A. Chlorine
  • B. Nitrogen
  • C. Ammonia
  • D. Carbon dioxide
Air contains maximum amount of __________?
  • A. oxygen
  • B. nitrogen
  • C. hydrogen
  • D. carbon dioxide
At what temperature does silver melt?
  • A. 275 °C
  • B. 327 °C
  • C. 961.8 °C
  • D. 100 °C
Which lenses are used by people having short-sightedness?
  • A. Convex
  • B. Concave
  • C. Concavo-convex
  • D. Plain
Which natural element has the highest melting point?
  • A. Iron
  • B. Tungsten
  • C. Copper
  • D. Silver
On which disease did Robert Koch work?
  • A. Tuberculosis
  • B. Cholera
  • C. Malaria
  • D. Diabetes
Very small time intervals are accurately measured by the __________?
  • A. Pabsars
  • B. White dwarfs
  • C. Atomic Clocks
  • D. None of these
The Reason for a Swimming Pool to appear Less Deep than the actual depth is __________?
  • A. Refraction
  • B. Light scattering
  • C. Reflection
  • D. Interference
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