IIT JEE Practice Question and Answer

Q: Pollination by wind is called 2277 0

  • 1
    Hydrophily
    Correct
    Wrong
  • 2
    Entomophily
    Correct
    Wrong
  • 3
    Anemophily
    Correct
    Wrong
  • 4
    Zoophily
    Correct
    Wrong
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Answer : 3. "Anemophily"
Explanation :

Answer: C) Anemophily Explanation: Pollination by wind is called Anemophily or Wind pollination. The process of the transfer of pollen from one individual plant to another, whereby the pollen is carried by air currents is called Anemophily.   Almost all gymnosperms (Non-flowering plants) are anemophilous, as are many plants in the order Poales, including grasses, sedges and rushes.

Q: Which of the following statements describes the glycemic index of foods? 2276 0

  • 1
    the extent to which a given food raises blood glucose and insulin levels
    Correct
    Wrong
  • 2
    the amount of insulin required to metabolize 100 grams of glucose
    Correct
    Wrong
  • 3
    an individual’s glucose/insulin ratio in a fasted state
    Correct
    Wrong
  • 4
    the glucose content of a given food
    Correct
    Wrong
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Answer : 1. "the extent to which a given food raises blood glucose and insulin levels"
Explanation :

Answer: A) the extent to which a given food raises blood glucose and insulin levels Explanation: The glycemic index or glycaemic index is a number associated with the carbohydrates in a particular type of food that indicates the effect of these carbohydrates on a person's blood glucose (also called blood sugar) level. A value of 100 represents the standard, an equivalent amount of pure glucose.   The GI represents the rise in a person's blood sugar level two hours after consumption of the food.

Q: Which statement best describes the electronegativity of an element? 2276 0

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    Electronegativity of an atom is it's ability to produce energy while losing an electron.
    Correct
    Wrong
  • 2
    Electronegativity of an atom is it's ability to attract electrons during bond formation.
    Correct
    Wrong
  • 3
    Electronegativity of an atom is it's ability to lose electrons during cation formation.
    Correct
    Wrong
  • 4
    Electronegativity of an atom is it's ability to share electrons during a covalent bond formation.
    Correct
    Wrong
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Answer : 2. "Electronegativity of an atom is it's ability to attract electrons during bond formation."
Explanation :

Answer: B) Electronegativity of an atom is it's ability to attract electrons during bond formation. Explanation: Electronegativity, is a chemical property that describes the tendency of an atom to attract a shared pair of electrons (or electron density) towards itself.

Q: What are three characteristics of the agricultural revolution? 2271 0

  • 1
    Farmers learned to control water through wells and canals
    Correct
    Wrong
  • 2
    New tools made it possible for more crops to be grown
    Correct
    Wrong
  • 3
    Crop rotation was invented, making it harder on soil
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation:

Q: K and L starts walking towards each other at 4 pm at speed of 3 km/hr and 4 km/hr respectively. They were initially 17.5 km apart. At what time do they meet ? 2270 0

  • 1
    6:00 am
    Correct
    Wrong
  • 2
    6:30 pm
    Correct
    Wrong
  • 3
    5:45 am
    Correct
    Wrong
  • 4
    5:52 pm
    Correct
    Wrong
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Answer : 2. "6:30 pm"
Explanation :

Answer: B) 6:30 pm Explanation: Suppose they meet after 'h' hours Then 3h + 4h = 17.5 7h = 17.5 h = 2.5 hours So they meet at => 4 + 2.5 = 6:30 pm

Q: Which city is known as "Queen of Arabian Sea"  ? 2269 0

  • 1
    Vizag
    Correct
    Wrong
  • 2
    Kakinada
    Correct
    Wrong
  • 3
    Mumbai
    Correct
    Wrong
  • 4
    Kochi
    Correct
    Wrong
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Answer : 4. "Kochi"
Explanation :

Answer: D) Kochi Explanation:

Q: Statement: The Chairman stressed the need for making education system more flexible and regretted that the curriculum has not been revised in keeping with the pace of the changes taking place.Course of action:a. Curriculum should be reviewed and revised periodically.b. System of education should be made more flexible. 2266 0

  • 1
    Only a follows
    Correct
    Wrong
  • 2
    Only b follows
    Correct
    Wrong
  • 3
    Both a & b follows
    Correct
    Wrong
  • 4
    Neither a nor b follows
    Correct
    Wrong
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Answer : 3. "Both a & b follows"
Explanation :

Answer: C) Both a & b follows Explanation: Clearly, the situation demands making the education system more flexible and changing it periodically according to the needs of the time. So, both the courses follow.

Q: A relationship can be damaged by 2265 0

  • 1
    no trust
    Correct
    Wrong
  • 2
    not meeting expectations
    Correct
    Wrong
  • 3
    people not spending time with one another
    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: Any of the above given options can be a reason for the damage of the relationship of a couple or a two families or two friends etc... Without trust relationship cannot be maintained, people not spending time with one another or without meeting the expectations of the opponents can also damage the relationship.

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