IIT JEE Practice Question and Answer

Q: The ratio of the angles of a triangle is 3 : 4 : 5. The three angles of a quadrilateral is equal to three angles of this triangle. What is the sum of the largest angle and second smallest angle of the quadrilateral ? 1350 0

  • 1
    225 deg
    Correct
    Wrong
  • 2
    210 deg
    Correct
    Wrong
  • 3
    205 deg
    Correct
    Wrong
  • 4
    245 deg
    Correct
    Wrong
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Answer : 1. "225 deg"
Explanation :

Answer: A) 225 deg Explanation: Angle of triangle = 180 × 3/12 = 45 deg Other angles of the triangle are = 60 deg, 75 deg Angle of quadrilateral = 360 - (45 + 60 + 75) = 180 deg Therefore, the four angles of the quadrilateral are 45, 60, 75 & 180 degrees. Hence, the sum of largest and smallest angle of the quadrilateral are 180 + 45 = 225 deg.

Q: What kind of apple isn't an apple? 1350 0

  • 1
    Pineapple
    Correct
    Wrong
  • 2
    Akero apple
    Correct
    Wrong
  • 3
    Adanac apple
    Correct
    Wrong
  • 4
    Aceymac apple
    Correct
    Wrong
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Answer : 1. "Pineapple"
Explanation :

Answer: A) Pineapple Explanation: Except pineapple remaining all three are types of apples. Pineapple is what kind of apple isn't an apple.

Q: Hormones are chemicals secreted and regulated by the endocrine system. 1350 0

  • 1
    TRUE
    Correct
    Wrong
  • 2
    FALSE Answer & Explanation Answer:
    Correct
    Wrong
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Answer : 1. "TRUE"
Explanation :

Answer: A) TRUE Explanation: True. Hormones are chemicals secreted and regulated by the endocrine system.

Q: What number missed in the given Number Series ? 1349 0

  • 1
    15
    Correct
    Wrong
  • 2
    13
    Correct
    Wrong
  • 3
    21
    Correct
    Wrong
  • 4
    16
    Correct
    Wrong
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Answer : 1. "15"
Explanation :

Answer: A) 15 Explanation: Two series alternate here, with every third number following a different pattern.In the main series, 4 is added to each number to arrive the next.In alternate series, 5 is subtracted from each number t arrive the next number.Here in the main series 3 + 4 = 77 + 4 = 1111 + 4 = 1515 + 4 = 19 In alternate series 24 - 5 = 1919 - 5 = 14...

Q: Most Explosive Type of Volcano is 1349 0

  • 1
    The Cinder Cone
    Correct
    Wrong
  • 2
    Rhyolite caldera complexes
    Correct
    Wrong
  • 3
    Shield Volcanoes
    Correct
    Wrong
  • 4
    The Basault Volcanoes
    Correct
    Wrong
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Answer : 2. "Rhyolite caldera complexes"
Explanation :

Answer: B) Rhyolite caldera complexes Explanation:

Q: What is the difference between Thermal Energy and Heat Energy? 1349 0

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Answer :
Explanation :

Energy tranfer takes place either by means of Heat or Work only in Thermodynamics. Heat :: Heat Energy is defined as Energy that can be transferred due to temperature change. Whereas Thermal Energy :: Thermal Energy is the Internal Energy stored in the system maintained at a certain Temperature.

Q: What natural factors contribute to global climate? 1349 0

  • 1
    Forest Fires
    Correct
    Wrong
  • 2
    Solar Activity
    Correct
    Wrong
  • 3
    Melting Permafrost
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: Global warming is the increase in the earth’s average temperature due to release of several greenhouse gases to the atmosphere by humans. Global warming is affecting many parts of the world.   Natural Causes include : 1. Solar Activity 2. Melting Permafrost 3. Forest Fires    Human made causes include : 1. Deforestation 2. Overpopulation 3. Landfills 4. Mining 5. Fertilizer Use

Q: Which of the following is present in a prokaryotic cell? 1348 0

  • 1
    Ribosomes
    Correct
    Wrong
  • 2
    Chloroplast
    Correct
    Wrong
  • 3
    Mitochondria
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 1. "Ribosomes"
Explanation :

Answer: A) Ribosomes Explanation: Ribosomes are present in prokaryotic cells. These are organelles which consist of two subunits. They are present in both Eukaryotic and Prokaryotic cells. They are made up of RNA and proteins and present in the cytoplasm and on the membranes and are involved in protein synthesis.

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