IIT JEE Practice Question and Answer

Q: The State which tops in the production of rubber is 2211 2

  • 1
    Tamil Nadu
    Correct
    Wrong
  • 2
    Karnataka
    Correct
    Wrong
  • 3
    Kerala
    Correct
    Wrong
  • 4
    Orissa
    Correct
    Wrong
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Answer : 3. "Kerala"
Explanation :

Answer: C) Kerala Explanation: A uniformly high temperature of 800F and the annual rainfall of 80 inches or more, required by rubber is available in Kerala.

Q: Which of the following are true of meditation in buddhism? 2211 0

  • 1
    Right concertation is reached through meditation
    Correct
    Wrong
  • 2
    It can involve concetration on your breathing
    Correct
    Wrong
  • 3
    It can mean visualizing certain things
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 4. "All of the above"
Explanation :

Answer: D) All of the above Explanation:

Q: The third proportional to 9 and 12 is ? 2209 0

  • 1
    14
    Correct
    Wrong
  • 2
    16
    Correct
    Wrong
  • 3
    18
    Correct
    Wrong
  • 4
    20
    Correct
    Wrong
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Answer : 2. "16"
Explanation :

Answer: B) 16 Explanation: Let the third proportion to 9 & 12 be 'x'. => 9:12 = 12 :p => p = 12x12/9 = 16.

Q: Missing Letter Challenge 2209 0

  • 1
    I
    Correct
    Wrong
  • 2
    M
    Correct
    Wrong
  • 3
    P
    Correct
    Wrong
  • 4
    L
    Correct
    Wrong
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Answer : 4. "L"
Explanation :

Answer: D) L Explanation: Here the letters follow the rule (AxZ)+(A+Z) The number corresponding to the letters are used in the rule A=1, Z=26 => 26x1 + 1 + 26 = 26+27 = 53 =  053 (LxP)+(L+P) = (12 x16) + 12 + 16 = 192+28 = 220 Similarly (11x12) + 11 + 12 => 132 + 23 = 155

Q: Which of the following is generally true about the stratosphere? 2209 0

  • 1
    It is very dry
    Correct
    Wrong
  • 2
    It is very moist
    Correct
    Wrong
  • 3
    The dryness level varies with the season
    Correct
    Wrong
  • 4
    The dryness level varies with the moon cycle
    Correct
    Wrong
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Answer : 1. "It is very dry"
Explanation :

Answer: A) It is very dry Explanation: The stratosphere layer of the atmosphere is very dry.

Q: What are the three parts of the Nucleotide? Answer Nucleotides are the building blocks of the DNA and RNA used as genetic material. Nucleotides also are used for cell signaling and to transport energy throughout cells. Both deoxyribonucleic acid (DN 2208 0

  • 1
    Q: What are the three parts of the Nucleotide? Answer Nucleotides are the building blocks of the DNA and RNA used as genetic material. Nucleotides also are used for cell signaling and to transport energy throughout cells. Both deoxyribonucleic acid (DNA)
    Correct
    Wrong
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Answer :
Explanation :

Nucleotides are the building blocks of the DNA and RNA used as genetic material. Nucleotides also are used for cell signaling and to transport energy throughout cells. Both deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are made up of nucleotides which consist of three parts:: 1. Nitrogenous Base2. Pentose Sugar3. Phosphate Group.

Q: Select a suitable figure from the four alternatives that would complete the figure matrix. 2207 0

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

Answer: A) 2 Explanation: In each row, the second figure is obtained from the first figure by adding two mutually perpendicular line segments at the centre and the third figure is obtained from the first figure by adding four circles outside the main figure.

Q: Which of these is unique to flowering plants? 2207 0

  • 1
    double fertilization
    Correct
    Wrong
  • 2
    an embryo surrounded by nutritive tissue
    Correct
    Wrong
  • 3
    haploid gametophytes
    Correct
    Wrong
  • 4
    pollen production
    Correct
    Wrong
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Answer : 1. "double fertilization"
Explanation :

Answer: A) double fertilization Explanation: In flowering plants one sperm nucleus fertilizes the egg and the other sperm nucleus fuses with two other nuclei found within the ovule, thus forming triploid endosperm.   Hence, double fertilization is unique to flowering plants.

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