IIT JEE Practice Question and Answer

Q: Who has been appointed by Flipkart as an in-charge of the newly acquired e-Bay India business ? 1856 0

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    Anil Goteti
    Correct
    Wrong
  • 2
    S Aparna
    Correct
    Wrong
  • 3
    Rajeev Kumar
    Correct
    Wrong
  • 4
    Kalyan Krishnamurthy
    Correct
    Wrong
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Answer : 1. "Anil Goteti"
Explanation :

Answer: A) Anil Goteti Explanation:

Q: Q = mc∆T refers to 1856 0

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    Enthalpy formula
    Correct
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  • 2
    Heat Transfer formula
    Correct
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  • 3
    Specific Heat formula
    Correct
    Wrong
  • 4
    Heat of Vaporization
    Correct
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Answer : 3. "Specific Heat formula"
Explanation :

Answer: C) Specific Heat formula Explanation: Q = mc∆T refers to Specific Heat formula.   When heat energy is added to a substance, the temperature will change by a certain amount. The relationship between heat energy and temperature is different for every material, and the specific heat is a value that describes how they relate.   Q = mc∆T   Q = heat energy (Joules, J) m = mass of a substance (kg) c = specific heat (units J/kg∙K) ∆T = change in temperature (Kelvins, K)

Q: Economic resources are also called 1855 0

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Answer :
Explanation :

Economic resources include land, labour, capital and entrepreneurship.  Entrepreneurship is also considered an economic resource because individuals are responsible for creating businesses and moving economic resources in the business environment.   These economic resources are also called as Factors of production.

Q: Light from the sun reaches us in nearly 1855 0

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    5 min
    Correct
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  • 2
    4.30 hrs
    Correct
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  • 3
    8 min
    Correct
    Wrong
  • 4
    5.30 hrs
    Correct
    Wrong
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Answer : 3. "8 min"
Explanation :

Answer: C) 8 min Explanation: The light from the sun takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface.   The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury to about 5.3 hours for Pluto.

Q: There are four prime numbers written in ascending order of magnitude. The product of the first three is 385 and of the last three is 1001. Find the fourth number ? 1855 0

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    17
    Correct
    Wrong
  • 2
    19
    Correct
    Wrong
  • 3
    13
    Correct
    Wrong
  • 4
    11
    Correct
    Wrong
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Answer : 3. "13"
Explanation :

Answer: C) 13 Explanation: (385/1001) = 5/13 First Number is 5 => Fourth number is 13

Q: IUPAC full form 1855 0

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    Indian Union of Pure and Applied Chemistry
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    International Union of Postal and Application Corporation
    Correct
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  • 3
    International Union of Pure and Applied Chemistry
    Correct
    Wrong
  • 4
    International University of Poland And Combodia
    Correct
    Wrong
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Answer : 3. "International Union of Pure and Applied Chemistry"
Explanation :

Answer: C) International Union of Pure and Applied Chemistry Explanation: IUPAC stands for International Union of Pure and Applied Chemistry.   A chemical nomenclature is a set of rules to generate systematic names for chemical compounds. The nomenclature used most frequently worldwide is the one created and developed by the International Union of Pure and Applied Chemistry (IUPAC).

Q: A passenger train is moving at a speed of 120 km/hr. If the length of the train is 101 meters, how long will it take to cross a railway platform 154 meters long ? 1854 0

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    6.24 sec
    Correct
    Wrong
  • 2
    6.58 sec
    Correct
    Wrong
  • 3
    7.325 sec
    Correct
    Wrong
  • 4
    7.65 sec
    Correct
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Answer : 4. "7.65 sec"
Explanation :

Answer: D) 7.65 sec Explanation: Here total distance = 154 + 101 = 255 mtsGiven speed = 120 kmph = 120x5/18 m/secHence, Time = d/s = 255x18/120x5 = 7.65 sec

Q: The probability that a number selected at random from the first 100 natural numbers is a composite number is  ? 1853 0

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    3/2
    Correct
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  • 2
    2/3
    Correct
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  • 3
    1/2
    Correct
    Wrong
  • 4
    34/7
    Correct
    Wrong
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Answer : 1. "3/2"
Explanation :

Answer: A) 3/2 Explanation: The number of exhaustive events = 100 C₁ = 100. We have 25 primes from 1 to 100. Number of favourable cases are 75. Required probability = 75/50 = 3/2.

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