General Science Questions With Answers

61. What unit is used to measure supersonic speed?

  • A) Knots
  • B) Mach
  • C) Kilometers per hour
  • D) Meters per second
Answer: Mach

62. Which of the following is an artificial ecosystem?

  • A) Wetland
  • B) Grassland
  • C) Coral reef
  • D) Crop field
Answer: Crop field

63. Which acid is commonly stored in batteries?

  • A) Sulphuric acid
  • B) Phosphoric acid
  • C) Formic acid
  • D) Boric acid
Answer: Sulphuric acid

64. What is the most abundant element by mass in the human body?

  • A) Oxygen
  • B) Nitrogen
  • C) Phosphorus
  • D) Sodium
Answer: Oxygen

65. Which object is not part of the solar system?

  • A) Moons
  • B) Dwarf planets
  • C) Meteoroids
  • D) Nebulae
Answer: Nebulae

66. In a healthy adult, what is the approximate percentage of white blood cells in total blood volume?

  • A) 1%
  • B) 5%
  • C) 10%
  • D) 15%
Answer: 1%

67. Which chemical is added to washing powder to keep it dry?

  • A) Sodium silicate
  • B) Sodium carbonate
  • C) Sodium sulphate
  • D) Sodium bicarbonate
Answer: Sodium silicate

68. Blue-baby syndrome is caused by an excess of which substance?

  • A) Nitrate
  • B) Sulfur
  • C) Calcium
  • D) Magnesium
Answer: Nitrate

69. Which was the first planet discovered using a telescope?

  • A) Neptune
  • B) Uranus
  • C) Venus
  • D) Mercury
Answer: Uranus

70. Which layer of the sun is characterized by sunspots?

  • A) Core
  • B) Convective Zone
  • C) Photosphere
  • D) Chromosphere
Answer: Photosphere
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