IIT JEE Practice Question and Answer

Q: Select a suitable figure from the four alternatives that would complete the figure matrix.             (1)   (2)   (3)   (4) 1511 0

  • 1
    1
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    3
    Correct
    Wrong
  • 4
    2
    Correct
    Wrong
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Answer : 4. "2"
Explanation :

Answer: D) 2 Explanation: One line is increasing in each subsequent figue.

Q: The interstate commerce act of 1887 required 1511 0

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Answer :
Explanation :

The Interstate Commerce Act of 1887 is a United States federal law that was designed to regulate the railroad industry, particularly its monopolistic practices.   The reason that the Interstate Commerce Act required that rates be published was to avoid secret rebates and similar deals. Until then, big shippers would demand rebates from railroads, which would in effect reduce their shipping costs without letting competitors know. This is anti-competitive. Hence, the Act required that railroad rates be "reasonable and just," but did not empower the government to fix specific rates.

Q: What Is The Study Of Cells Called 1511 0

  • 1
    Cellogysm
    Correct
    Wrong
  • 2
    Cytology
    Correct
    Wrong
  • 3
    Cell Biology
    Correct
    Wrong
  • 4
    Both B & C
    Correct
    Wrong
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Answer : 4. "Both B & C"
Explanation :

Answer: D) Both B & C Explanation: The branch of biology that studies the different structures and functions of the cell is called Cell Biology or Cytology.  Cell biology (formerly called Cytology), is a Greek word: kytos, "vessel" is a branch of biology that studies the different structures and functions of the cell and focuses mainly on the idea of the cell as the basic unit of life. The cell (from Latin cella, meaning "small room") is the basic Structural, Functional (and)  Biological unit of all known living organisms.  A cell is the smallest unit of life that can replicate independently, and cells are often called the "building blocks of life".

Q: Poor people have it. Rich people need it. If you eat it you die.   What is it? 1511 0

  • 1
    Money
    Correct
    Wrong
  • 2
    Brain
    Correct
    Wrong
  • 3
    Luxury items
    Correct
    Wrong
  • 4
    Nothing
    Correct
    Wrong
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Answer : 4. "Nothing"
Explanation :

Answer: D) Nothing Explanation: Poor people have Nothing Rich people need Nothing If you eat Nothing you die.   Hence, it is Nothing.

Q: If a girl cycles at 10 kmph, then she arrives at a certain place at 1 p.m. If she cycles at 15 kmph, she will arrive at the same place at 11 a.m. At what speed must she cycle to get there at noon? 1511 0

  • 1
    14 kmph
    Correct
    Wrong
  • 2
    13 kmph
    Correct
    Wrong
  • 3
    12 kmph
    Correct
    Wrong
  • 4
    11 kmph
    Correct
    Wrong
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Answer : 3. "12 kmph"
Explanation :

Answer: C) 12 kmph Explanation: The distance is constant in this case. Let the time taken for travel with a speed of 10 kmph be 't'. Now the speed of 15 kmph is 3/2 times the speed of 10 kmph. Therefore, time taken with the speed of 15 kmph will be 2t/3 (speed is inversely proportional to time) Extra time taken = t - 2t/3 = t/3 => 1pm - 11am = 2hrs => t/3 = 2h => t = 6 hrs. Now, Distance = speed x time = 10 x 6 = 60 kms Time he takes to reach at noon = 6 - 1 = 5 hrs Now, Speed = 60/5 = 12 kmph.

Q: How many Nucleotides make up a Codon? 1510 0

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    3
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    5
    Correct
    Wrong
  • 4
    6
    Correct
    Wrong
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Answer : 1. "3"
Explanation :

Answer: A) 3 Explanation: 3 Nucleotides make up a Codon.  The nucleotide triplet that encodes an amino acid is called a codon. Each group of three nucleotides encodes one amino acid.

Q: Which one phosphorylates ADP to make ATP? 1510 0

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Answer :
Explanation :

ATP synthase Phosphorylates ADP to make ATP.

Q: A shopkeeper who deals in books sold a book at 16% loss. Had she charged an additional Rs.60 while selling it , her profit would have been 14%. Find the cost price, in rupees, of the book ? 1509 0

  • 1
    Rs. 185
    Correct
    Wrong
  • 2
    Rs. 154
    Correct
    Wrong
  • 3
    Rs. 200
    Correct
    Wrong
  • 4
    Rs. 177
    Correct
    Wrong
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Answer : 3. "Rs. 200"
Explanation :

Answer: C) Rs. 200 Explanation: Let the C.P be 'x'Then, the selling price S.P = x - 16x/100= 84x/100 = 21x/25Now, if the S.P is 60 more, then the profit is 14% => 21x/25 + 60 = x + 14x/100=> 114x/100 - 21x/25 = 60=> (57 - 42)x/50 = 60=> 15x/50 = 60x = 3000/15 = 200 Therefore, the Cost price C.P = x = Rs. 200

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