IIT JEE Practice Question and Answer

Q: Who has the best overall health? 2416 0

  • 1
    a person who exercises regularly and is not overweight
    Correct
    Wrong
  • 2
    a person who is not ill and is physically active
    Correct
    Wrong
  • 3
    a person who lives longer than his or her grandparents
    Correct
    Wrong
  • 4
    a person who balances social, physical, and mental health
    Correct
    Wrong
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Answer : 4. "a person who balances social, physical, and mental health"
Explanation :

Answer: D) a person who balances social, physical, and mental health Explanation: A person who balances all the three healths such as Physical, mental and Social healths has the best overall health.

Q: Which structural formula represents a dipole? 2415 0

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

Answer: D) 1 Explanation: What is Dipole :   when two atoms in a molecule have substantially different electronegativity: One atom attracts electrons more than another, becoming more negative, while the other atom becomes more positive.

Q: Which of the following animals have teeth in their stomach? 2410 0

  • 1
    Frogs
    Correct
    Wrong
  • 2
    Crabs
    Correct
    Wrong
  • 3
    Snakes
    Correct
    Wrong
  • 4
    Cockroach
    Correct
    Wrong
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Answer : 2. "Crabs"
Explanation :

Answer: B) Crabs Explanation:

Q: What group sets hunting regulations in most states? 2407 0

  • 1
    Forest management agency
    Correct
    Wrong
  • 2
    Head hunting firms agency
    Correct
    Wrong
  • 3
    Hunting outfitters agency
    Correct
    Wrong
  • 4
    A wildlife management agency
    Correct
    Wrong
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Answer : 4. "A wildlife management agency"
Explanation :

Answer: D) A wildlife management agency Explanation: A wildlife management agency sets hunting regulations in most states.     These agencies will have regular meetings where the public can voice their concerns and make suggestions. Hunters wishing to propose changes to the regulations should participate in these meetings or join a hunting organization that interacts with the agency.

Q: The product of two positive numbers is p. If each of the numbers is increased by 2, the new product is how much greater than twice the sum of the two original numbers ? 2407 0

  • 1
    p times
    Correct
    Wrong
  • 2
    2p times
    Correct
    Wrong
  • 3
    (p + 4) times
    Correct
    Wrong
  • 4
    (2p + 3) times
    Correct
    Wrong
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Answer : 3. "(p + 4) times"
Explanation :

Answer: C) (p + 4) times Explanation: Let the two no's be a and b;Given product of the no's is p = ab;If the each nos is increased by 2 then the new product will be (a+2)(b+2) = ab + 2a + 2b + 4= ab + 2(a+b) + 4= p + 2(a+b) + 4Hence the new product is (p+4) times greater than twice the sum of the two original numbers.

Q: Statements : All keys are locks. All locks are bangles. All bangles are cars. Conclusion : a. Some cars are locks.                    b. Some bangles are keys.                    c. Some cars are keys. 2406 0

  • 1
    Only a follows
    Correct
    Wrong
  • 2
    Only c follows
    Correct
    Wrong
  • 3
    Only a & b follows
    Correct
    Wrong
  • 4
    a, b & c follows
    Correct
    Wrong
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Answer : 4. "a, b & c follows"
Explanation :

Answer: D) a, b & c follows Explanation: All locks are bangles + All bangles are cars = A + A = A= All locks are cars => Some cars are locks.Hence conclusion (a) follows.All keys are locks + All locks are bangles = A + A = A= All keys are bangles => some bangles are keys.Hence conclusion (b) follows.All keys are bangles + All bangles are cars = A + A = A= All keys are cars => Some cars are keys.Hence conclusion (C) follows. Thus all a, b and c follows.

Q: Which of the following is the lightest metal? 2403 0

  • 1
    Lithium
    Correct
    Wrong
  • 2
    Silver
    Correct
    Wrong
  • 3
    Mercury
    Correct
    Wrong
  • 4
    Lead
    Correct
    Wrong
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Answer : 1. "Lithium"
Explanation :

Answer: A) Lithium Explanation: Lithium is the lightest metal and the lightest solid element. It is a soft, silvery-white alkali metal. Under standard conditions. Like all alkali metals, lithium is highly reactive and flammable and is stored in mineral oil.

Q: What does the color black on a map illustrate? 2402 0

  • 1
    contours
    Correct
    Wrong
  • 2
    water bodies
    Correct
    Wrong
  • 3
    woodland areas
    Correct
    Wrong
  • 4
    borders
    Correct
    Wrong
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Answer : 4. "borders"
Explanation :

Answer: D) borders Explanation: There are different colors that are used for different signs on the maps. The typical color standard for topographic maps depicts contours in brown, bodies of water in blue, boundaries in black, and grids and roads in red. Topographic maps may use different colors to represent area features.   Black represents man-made objects or cultural features like roads, bridges, borders, etc...

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