IIT JEE Practice Question and Answer

Q: 4 45 of 259.99 = ? % of 1247.9 1573 0

  • 1
    96
    Correct
    Wrong
  • 2
    100
    Correct
    Wrong
  • 3
    78
    Correct
    Wrong
  • 4
    88
    Correct
    Wrong
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Answer : 2. "100"
Explanation :

Answer: B) 100 Explanation: Given  4 45 of 259.99 = ? % of 1247.9 24/5 x 260 = ? x 1248/100 ? = 1248 x 100/1248 ? = 100.

Q: A Bus travels first half distance between two places with a speed of 40 kmph and the rest half distance with a speed of 60 kmph. The average speed of the Bus is ? 1572 0

  • 1
    48 kmph
    Correct
    Wrong
  • 2
    50 kmph
    Correct
    Wrong
  • 3
    46 kmph
    Correct
    Wrong
  • 4
    42 kmph
    Correct
    Wrong
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Answer : 1. "48 kmph"
Explanation :

Answer: A) 48 kmph Explanation: we know that speed = distance traveled/time takenlet the total distance traveled by the car is 2x km.then time taken by it to cover first half is x/60 hour.and for second half is x/40 hour.Then average speed= total distance travelled / total time taken.   i.e. 2xx60+x40   => 2x5x120   = 48 kmph.

Q: Which State is the "most corrupt state" According to the National Crime Records Bureau (NCRB)? 1572 0

  • 1
    B)? A)
    Correct
    Wrong
  • 2
    ? A) Manipur B) Maharashtra
    Correct
    Wrong
  • 3
    Himachal Pradesh
    Correct
    Wrong
  • 4
    Uttarakhand
    Correct
    Wrong
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Answer : 2. "? A) Manipur B) Maharashtra"
Explanation :

Answer: B) Maharashtra Explanation:

Q: The Simon commission visited India in the year? 1571 0

  • 1
    1933
    Correct
    Wrong
  • 2
    1939
    Correct
    Wrong
  • 3
    1921
    Correct
    Wrong
  • 4
    1927
    Correct
    Wrong
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Answer : 4. "1927"
Explanation :

Answer: D) 1927 Explanation: The British government appointed a commission under the chairmanship of Sir John Simon to report on India's constitutional progress for introducing constitutional reforms as had been promised in 1927.

Q: Who claimed Brazil for Portugal? 1571 0

  • 1
    Vasco da Gama
    Correct
    Wrong
  • 2
    Ferdinand Magellan
    Correct
    Wrong
  • 3
    Pedro Cabral
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 3. "Pedro Cabral"
Explanation :

Answer: C) Pedro Cabral Explanation: In April 1500, Brazil was claimed by Portugal on the arrival of the Portuguese fleet commanded by Pedro Alvares Cabral.

Q: What is the meaning of the four colour dots in the news paper? 1571 0

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Answer :
Explanation :

If you read newspaper daily, then you may be aware of the four coloured dots on the corner of the newspaper.    The four dots CMYK — blue (Cyan), pink (Magenta), Yellow and black (Kalio) are registration marks used during printing to help ensure the print is aligned properly. Any colour can be obtained by adding the correct proportion of these four colours.   CMYK is used as a base for the colours used in printing newspapers, and these four colours are often printed on the paper in either a heart, dot, or square shape.   To print an image, the plates of all these colours are laid out on a page separately and lined up in the same spot while printing. If those four dots are blur or you find the colours overlapping on the image it means the printing is not good. To print an accurate and perfect image, the colors and shape must be arranged precisely and must be claear sharp in order to get the best output.   That's why CMYK is also called registration mark. As physically checking all the pages of the paper is not possible for a printer who prints number of news papers daily, he just checks these dots.

Q: What is the distance around a circle called 1571 0

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Answer :
Explanation :

The distance around a circle is called as Circumference. And that in the case of square or rectangle it is called as Perimeter.

Q: Which of these is a receptor molecule? 1571 0

  • 1
    A
    Correct
    Wrong
  • 2
    B
    Correct
    Wrong
  • 3
    C
    Correct
    Wrong
  • 4
    E
    Correct
    Wrong
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Answer : 2. "B"
Explanation :

Answer: B) B Explanation: The receptor molecules, which receive signals from outside the cell, passing the signal to the inside.   In order for a nerve cell, or any cell, to perceive its environment, it needs a sensory apparatus. And for an individual cell, most of that sensation is derived at the cell surface. So, it expresses on its cell surface proteins that span across the membrane. In the outside world, these proteins can act to receive signals, catching molecules on the outside and then as the molecule passes to the inside of the cell, they can send signals like alarm signals that can tell the cell that a particular molecule is outside.   Hence, here B is the receptor cell.

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