IIT JEE Practice Question and Answer

Q: The Indian Subcontinent was partitioned into 1601 0

  • 1
    India and Tibet
    Correct
    Wrong
  • 2
    Pakistan and Bangladesh
    Correct
    Wrong
  • 3
    India and Bangladesh
    Correct
    Wrong
  • 4
    India and Pakistan
    Correct
    Wrong
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Answer : 4. "India and Pakistan"
Explanation :

Answer: D) India and Pakistan Explanation: The partition of the Indian subcontinent into India and Pakistan after World War-II along the ''Radcliffe line'' following the Indian Independence Act of 1947 was based on religion conflicts.   Pakistan was a Muslim-majority country, while India's population consisted mostly of Hindus. Originally, Pakistan was divided into two regions, East Pakistan and West Pakistan. However, East Pakistan won its independence in 1971, and is now called Bangladesh.

Q: The average age of Vishal and Raghavendra is 24 years. If a new person Veerender is also included, the average age is increased by 1.5 years. What is the age of Veerender? 1600 0

  • 1
    28.5 yrs
    Correct
    Wrong
  • 2
    29.5 yrs
    Correct
    Wrong
  • 3
    30.5 yrs
    Correct
    Wrong
  • 4
    27 yrs
    Correct
    Wrong
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Answer : 1. "28.5 yrs"
Explanation :

Answer: A) 28.5 yrs Explanation: According to the given data, (V + R)/2 = 24 Now, after joining of Veerender, V + R + D)/3 = 25.5 Hence, Veerender Age = 3(25.5) - 2(24) = 76.5 - 48 = 28.5 years.

Q: A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks overboard. The level of water in the pool will 1600 0

  • 1
    increase
    Correct
    Wrong
  • 2
    decrease
    Correct
    Wrong
  • 3
    remains the same
    Correct
    Wrong
  • 4
    first decrease and then increase
    Correct
    Wrong
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Answer : 2. "decrease"
Explanation :

Answer: B) decrease Explanation: Let M and m grams be the mass of boat + rock in it. By law of floatation(M+m) grams of water will be displaced. This has a volume of (M+m)cc. That means the level of water in pool has risen up by (M+m)cc with the boat + rock when it is floating. If the rocks in the boat are thrown not into the pool but outside, the weight left is only M grams the weight of the boat. This will have displaced M cc of water only i.e less water than in the case of loaded boat. But if the rocks are put in the water in the pool and not outside, then the water in the pool will rise not only by M cc on account of empty boat but also by a volume of the stone put into it. This volume will be mdwhere m is the mass of rock and d density of rock. Now md is  < m. Thus the total rise will be M+mdwhich is < M + m.

Q: A polygon has 44 diagonals, then the number of its sides are ? 1599 0

  • 1
    13
    Correct
    Wrong
  • 2
    9
    Correct
    Wrong
  • 3
    11
    Correct
    Wrong
  • 4
    7
    Correct
    Wrong
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Answer : 3. "11"
Explanation :

Answer: C) 11 Explanation: Let the number of sides be n.  The number of diagonals is given by nC2 - n   Therefore, nC2 - n = 44, n>0  nC2 - n = 44 n2 - 3n - 88 = 0  n2 -11n + 8n - 88 = 0   n(n - 11) + 8(n - 11) = 0  n = -8 or n = 11.   As n>0, n will not be -8. Therefore, n=11.

Q: If the production possibilities curve was a straight line, this would imply that 1598 0

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    Economic resources are perfectly substitutable, in the production of the two products
    Correct
    Wrong
  • 2
    Equal quantities of both products are produced at each possible point on the curve
    Correct
    Wrong
  • 3
    The two products will sell at the same market price
    Correct
    Wrong
  • 4
    The two products are equally important to consumers
    Correct
    Wrong
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Answer : 3. "The two products will sell at the same market price"
Explanation :

Answer: C) The two products will sell at the same market price Explanation: A production–possibility frontier (PPF) or production possibility curve (PPC) is the possible tradeoff of producing combinations of goods with constant technology and resources per unit time.

Q: What does ELA stand for in education 1597 0

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Answer :
Explanation :

ELA - English Language Arts.

Q: Which of the following is not a monosaccharide? 1596 0

  • 1
    Fructose
    Correct
    Wrong
  • 2
    Glucose
    Correct
    Wrong
  • 3
    Galactose
    Correct
    Wrong
  • 4
    Sucrose
    Correct
    Wrong
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Answer : 4. "Sucrose"
Explanation :

Answer: D) Sucrose Explanation: Sucrose is not a monosaccharide.   Monosaccharides are simple carbohydrates molecules that cannot be broken down into smaller molecules of other carbohydrates.   Glucose, galactose and fructose are examples of Monosaccharides.

Q: I make things short but I am pretty long myself. WHAT AM I? 1596 0

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Answer :
Explanation :

I am ABBREVIATION. Yes, i make things short and asks the full form of that thing.   Ex : FCI - Food Corporation of India IAS - Indian Administrative Service.

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