IIT JEE Practice Question and Answer

Q: which of the following statements are correct 1631 0

  • 1
    Sir Richard Arkwright - Father of industrial revolution
    Correct
    Wrong
  • 2
    Michael Faraday - Discovered Benzene and invented Bunsen Burner
    Correct
    Wrong
  • 3
    Thomas Alva Edison - phonograph and motion picture camera
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: Inventors and their Inventions ::   Sir Richard Arkwright - Father of industrial revolution.   Michael Faraday - Discovered Benzene and invented Bunsen Burner.   Thomas Alva Edison - Invented Phonograph and motion picture camera.

Q: In following number series only one number is wrong. Find out that wrong or odd number in the series? 6, 78, 858, 7722, 54055, 270270 1631 0

  • 1
    270270
    Correct
    Wrong
  • 2
    54055
    Correct
    Wrong
  • 3
    7722
    Correct
    Wrong
  • 4
    858
    Correct
    Wrong
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Answer : 2. "54055"
Explanation :

Answer: B) 54055 Explanation: Here the given series follows a pattern that, multiplying the number with odd numbers in decreasing order starting with 13. That is,   6 × 13 = 78   65 × 11 = 858   858 × 9 = 7722   7722 × 7 = 54054   54054 × 5 = 270270   Hence, the wrong number is 54055

Q: If L exceeds K by 30%, then K is less than L by ? 1629 0

  • 1
    14 2/5 %
    Correct
    Wrong
  • 2
    23 1/3 %
    Correct
    Wrong
  • 3
    20 %
    Correct
    Wrong
  • 4
    16 %
    Correct
    Wrong
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Answer : 2. "23 1/3 %"
Explanation :

Answer: B) 23 1/3 % Explanation: K = 100 L = 130130------ 30100------- ? => 23 1/13 %

Q: What country did we fight during the Revolutionary War? 1629 0

  • 1
    Pakistan
    Correct
    Wrong
  • 2
    United States of America
    Correct
    Wrong
  • 3
    England
    Correct
    Wrong
  • 4
    Germany
    Correct
    Wrong
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Answer : 3. "England"
Explanation :

Answer: C) England Explanation: We fought against England in the Revolutionary War for Independence from the British rule.

Q: A myocardial infarction is a heart attack. 1629 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, the given statement that a myocardial infarction is a heart attack.

Q: R enter into a partnership in the ratio 2 : 3 : 5 . After 2 months, P increases his share 20% and Q by 10%. If the total profit at the end of one year is Rs 1,90,500, what amount will 'R' receive at the end of year as share in profit ? 1628 0

  • 1
    Rs. 90500
    Correct
    Wrong
  • 2
    Rs. 87500
    Correct
    Wrong
  • 3
    Rs. 88900
    Correct
    Wrong
  • 4
    Rs. 90000
    Correct
    Wrong
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Answer : 4. "Rs. 90000"
Explanation :

Answer: D) Rs. 90000 Explanation: Ratio of investments for 1 year => (P : Q : R) = (2x2 + 2.4x10) : (3x2 + 3.3x10) : (5x12) => (P : Q : R) = 28 : 39 : 60 Now R share = 190500 x 60/127 = Rs. 90000.

Q: Who has been appointed by Flipkart as an in-charge of the newly acquired e-Bay India business ? 1628 0

  • 1
    Anil Goteti
    Correct
    Wrong
  • 2
    S Aparna
    Correct
    Wrong
  • 3
    Rajeev Kumar
    Correct
    Wrong
  • 4
    Kalyan Krishnamurthy
    Correct
    Wrong
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Answer : 1. "Anil Goteti"
Explanation :

Answer: A) Anil Goteti Explanation:

Q: Metals are good conductors of electricity because 1628 0

  • 1
    The atoms are lightly packed
    Correct
    Wrong
  • 2
    They contain free electrons
    Correct
    Wrong
  • 3
    They have high melting point
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 2. "They contain free electrons"
Explanation :

Answer: B) They contain free electrons Explanation: Metal particles are held together by strong metallic bonds, which is why they have high melting and boiling points. The free electrons in metals can move through the metal, allowing metals to conduct electricity. Because the electrons in the atom's higher energy levels can separate from the atoms easily, they can be pulled out with very little energy. Because the molecular structure of the metal is such that 'free electrons' are free to move, thus being categorized as electrically conductive.   For example, copper is used for electrical wiring because it is a good conductor of electricity.

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