IIT JEE Practice Question and Answer

Q: Father of Indian Engineering - 1523 0

  • 1
    James Hickey
    Correct
    Wrong
  • 2
    Dr. M.S. Swaminathan
    Correct
    Wrong
  • 3
    Nandalal Bose
    Correct
    Wrong
  • 4
    M.Visweswariah
    Correct
    Wrong
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Answer : 4. "M.Visweswariah"
Explanation :

Answer: D) M.Visweswariah Explanation: M.Visweswariah is known as the Father of Indian Engineering.   Father of Indian Printing - James Hickey Father of Indian Green Revolution - Dr. M.S. Swaminathan Father of Indian Painting - Nandalal Bose.

Q: A motorboat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the motorboat and speed of the water current respectively? 1523 0

  • 1
    3:7
    Correct
    Wrong
  • 2
    7:9
    Correct
    Wrong
  • 3
    5:4
    Correct
    Wrong
  • 4
    8:3
    Correct
    Wrong
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Answer : 4. "8:3"
Explanation :

Answer: D) 8:3 Explanation: Let the man's rate upstream be x kmph and that downstream be y kmph. Then, distance covered upstream in 8 hrs 48 min = Distance covered downstream in 4 hrs. x x 8 4 = (y x 4) 5 44 x =4y 5  y = 11 x. 5  Required ratio = y + x : y - x 2 2    = 16x x 1 : 6x x 1 5 2 5 2    = 8 : 3 5 5    = 8 : 3.

Q: Negative plus a positive equals 1522 0

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    negative
    Correct
    Wrong
  • 2
    positive
    Correct
    Wrong
  • 3
    zero
    Correct
    Wrong
  • 4
    Can't be determined
    Correct
    Wrong
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Answer : 4. "Can't be determined"
Explanation :

Answer: D) Can't be determined Explanation: We know that a negative value plus a positive value always count backward and the sign depends on the bigger value sign. When you are adding a negative number to a positive number, then the value counts backward and takes the sign of the biggest number.   For example:: Adding -5 and +2 -5 + 2 = -3 (big number is 5 and its sign is '-')   Adding -3 and  +5 +5 + (-3) = 5 - 3 = +2(big number is 5 and it has sign '+').

Q: Now my value becomes ? 1522 0

  • 1
    5
    Correct
    Wrong
  • 2
    10
    Correct
    Wrong
  • 3
    15
    Correct
    Wrong
  • 4
    12
    Correct
    Wrong
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Answer : 2. "10"
Explanation :

Answer: B) 10 Explanation: In the first figure, number of triangles are 5. In the second, the figure becomes double then the number of triangles also doubles. i.e, 10.

Q: Plant cells perform photosynthesis, which occurs in the 1522 0

  • 1
    Nucleus
    Correct
    Wrong
  • 2
    Mitochondria
    Correct
    Wrong
  • 3
    Cytoplasm
    Correct
    Wrong
  • 4
    Chloroplasts
    Correct
    Wrong
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Answer : 4. "Chloroplasts"
Explanation :

Answer: D) Chloroplasts Explanation: Photosynthesis takes place inside plant cells in small things called chloroplasts. Chloroplasts contain a green substance called chlorophyll and this absorbs the light energy needed to make photosynthesis happen.

Q: Saving accounts usually offer ___ interest rates than checking accounts. 1522 0

  • 1
    Higher
    Correct
    Wrong
  • 2
    Lower
    Correct
    Wrong
  • 3
    Equal
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 1. "Higher"
Explanation :

Answer: A) Higher Explanation: A savings account is the most basic type of account at a bank or credit union, allowing you to deposit money, keep the funds safe, and withdraw funds as needed. Savings accounts typically pay interest on your deposits, which helps you grow your money, but rates are relatively low on these low-risk accounts. A checking account is a deposit account held at a financial institution that allows withdrawals and deposits. Also called demand accounts or transactional accounts, checking accounts are very liquid and can be accessed using checks, automated teller machines and electronic debits, among other methods.   Hence, Saving accounts usually offer higher interest rates than checking accounts.

Q: What has a neck but no head and wears a cap? 1522 0

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Answer :
Explanation :

A bottle has a neck but no head and wears a cap.

Q: Pollination is best defined as 1520 0

  • 1
    growth of pollen tube in ovule
    Correct
    Wrong
  • 2
    visiting flowers by insects
    Correct
    Wrong
  • 3
    germination of pollen grains
    Correct
    Wrong
  • 4
    transfer of pollen from anther to stigma
    Correct
    Wrong
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Answer : 4. "transfer of pollen from anther to stigma"
Explanation :

Answer: D) transfer of pollen from anther to stigma Explanation: Pollination is when pollen grains from an anther, the male portion of a flower, are transferred to a female part of the flower, known as the stigma. In order for pollination to be successful, the pollen grains transferred must be from a flower of the same species.   After the pollen grains land on the stigma, they create a pollen tube through the length of the style or stalk connecting the stigma and ovary. Once the pollen tube is complete, the pollen grain will send sperm cells from the grain down to the ovary. When the sperm cells reach the ovary and the egg cells, fertilization will occur, which will result in the formation of the seed. The seed will then be released from the parent plant and will be able to grow into a plant and continue the reproductive cycle using the method of pollination.

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