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General Science MCQ

General Science MCQ Practice

Practice General Science questions with instant scoring, correct answer highlighting, detailed solutions and first-click AI explanation caching for missing explanations.

📚 Questions: 553 🧭 Page: 19 / 56 🎯 10 per page
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Q. 3606
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Penicillin was invented by:
  • A Christian Bernard
  • B Alexander Fleming
  • C Mc Collum
  • D William Harvey
Correct Option: B  [ Alexander Fleming ]
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Q. 3604
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In 1643, an Italian named Evangelista Torricelli invented:
  • A Thermometer
  • B Barometer
  • C Ritcher Scale
  • D Bar Codes
Correct Option: B  [ Barometer ]
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Q. 3421
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Generally, non-metals do not conduct electricity. Which of the following conducts electricity?
  • A Diamond
  • B Graphite
  • C Sulfur
  • D Fullerene
Correct Option: B  [ Graphite ]
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Q. 3418
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Most plants absorb nitrogen in the form of:
  • A proteins
  • B nitrates and nitrites
  • C urea
  • D nitrates, nitrites and urea
Correct Option: D  [ nitrates, nitrites and urea ]
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Q. 3413
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Oxygen liberated during photosynthesis comes from:
  • A water
  • B carbon dioxide
  • C glucose
  • D Both carbon dioxide and glucose.
Correct Option: A  [ water ]
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Q. 3410
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Which quantity remains constant in parallel connection of resistance?
  • A Electric current flow rate
  • B Potential difference
  • C Amount of electricity
  • D Both the potential difference and amount of electricity
Correct Option: B  [ Potential difference ]
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Q. 3408
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Under critical temperature, on compressing gases turn to liquid, because:
  • A molecules are of finite size.
  • B molecules have random motion.
  • C molecules have inter-molecular forces.
  • D molecules are spherical.
Correct Option: C  [ molecules have inter-molecular forces. ]
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Q. 3407
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Number of spinal nerves in human are:
  • A 11 pairs
  • B 27 pairs
  • C 32 pairs
  • D 31 pairs
Correct Option: D  [ 31 pairs ]
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Q. 3157
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Which pigment gives pale yellow color to urine?
  • A Erithromycin
  • B Amoxylin
  • C Urochronie
  • D Unicom
Correct Option: C  [ Urochronie ]
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Q. 3152
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Which is the respiratory organ of fish?
  • A Ears
  • B Gills
  • C Skin
  • D Lungs
Correct Option: B  [ Gills ]
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