IIT JEE Practice Question and Answer

Q: I am always infront of you, but you will never see me. Who am I? 1411 0

  • 1
    Mirror
    Correct
    Wrong
  • 2
    Shadow
    Correct
    Wrong
  • 3
    Future
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 3. "Future"
Explanation :

Answer: C) Future Explanation: Yes, future is always infront of us, but no one can see it.

Q: Which pair of atoms has the highest electronegativity difference?   (Calcium's electronegativity is 1.0 Fluorine's electronegativity is 4.0 Hydrogen's electronegativity is 2.2 Sodium's electronegativity is 0.93) 3451 0

  • 1
    F-F
    Correct
    Wrong
  • 2
    Ca-F
    Correct
    Wrong
  • 3
    H-F
    Correct
    Wrong
  • 4
    Na-F
    Correct
    Wrong
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Answer : 4. "Na-F"
Explanation :

Answer: D) Na-F Explanation: F-F = 4 - 4 = 0 Ca-F = 4 - 1 = 3.0 H-F = 4 - 2.2 = 1.8 Na-F = 4 - 0.93 = 3.07   Hence, the highest electronegativity difference is in Na-F.

Q: What time will it be in 45 minutes? Now, if the time is 4:48 pm. 1516 0

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Answer :
Explanation :

As now, the time 4 : 48 pm after 45 min it will be 4:48 + 45 min = (4 hrs : 48 + 12 min) pm + 33 min = 5 hrs : 33 min pm. Hence, it is 5:33 pm.

Q: The highway transportation system is coordinated by 1949 0

  • 1
    Department of Transportation
    Correct
    Wrong
  • 2
    Your local police department
    Correct
    Wrong
  • 3
    The Department of Education
    Correct
    Wrong
  • 4
    The Internal Revenue Service
    Correct
    Wrong
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Answer : 1. "Department of Transportation"
Explanation :

Answer: A) Department of Transportation Explanation:

Q: Who wrote the social contract? 2093 0

  • 1
    Jean-Jacques Rousseau
    Correct
    Wrong
  • 2
    Immanuel Kant
    Correct
    Wrong
  • 3
    John Locke
    Correct
    Wrong
  • 4
    Voltaire
    Correct
    Wrong
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Answer : 1. "Jean-Jacques Rousseau"
Explanation :

Answer: A) Jean-Jacques Rousseau Explanation: Jean-Jacques Rousseau (1712–1778), in his influential 1762 treatise The Social Contract, outlined a different version of social contract theory, as the foundations of political rights based on unlimited popular sovereignty.

Q: 80% of 900 + 162 x 4 x ? = 113 - 99 3223 0

  • 1
    0.5
    Correct
    Wrong
  • 2
    1
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    0
    Correct
    Wrong
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Answer : 1. "0.5"
Explanation :

Answer: A) 0.5 Explanation: 80x900/100 + 256 x 4 x ? = 1331 - 99 720 + 1024 x ? = 1232 ? = 1232 - 720/1024 ? = 512/1024 = 0.5 ? = 0.5

Q: How many times can you subtract 10 from 100? 7077 0

  • 1
    9 times
    Correct
    Wrong
  • 2
    10 times
    Correct
    Wrong
  • 3
    1 time
    Correct
    Wrong
  • 4
    0 times
    Correct
    Wrong
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Answer : 3. "1 time"
Explanation :

Answer: C) 1 time Explanation: How many times can you subtract 10 from 100, for this if we go through logically, it is only 1 time. For the first time if we subtract 10 from 100, then there will no 100 to subtract from.   Hence, it is only 1 time we can subtract 10 from 100.

Q: To what kingdom do common bacteria belong 2042 0

  • 1
    Archaea
    Correct
    Wrong
  • 2
    Protista
    Correct
    Wrong
  • 3
    Eubacteria
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 3. "Eubacteria"
Explanation :

Answer: C) Eubacteria Explanation: There are two kingdoms of bacteria. They are 1. Eubacteria  and  2. Archaea   The members of these two kingdoms appear similar in shape and appearance, even under the extreme magnification of the electron microscope . However, they are very different from each other in a number of molecular and biochemical aspects. It is these differences that have resulted in the microorganisms being grouped into separate kingdoms.   For example, eubacteria contain the rigid, stress-bearing network known as the peptidoglycan . The only exceptions are the bacteria from the genera Mycoplasma and Chlamydia. Archaebacteria do not contain peptidoglycan. Instead, they contain a different structure that is called pseudomurein.   The common bacteria belongs to Eubacteria kingdom.

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