IIT JEE Practice Question and Answer

Q: Study Of Cells Is Called 1284 0

  • 1
    Cellogysm
    Correct
    Wrong
  • 2
    Cell biology
    Correct
    Wrong
  • 3
    Cell Organism
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 2. "Cell biology"
Explanation :

Answer: B) Cell biology Explanation: The branch of biology that studies the different structures and functions of the cell is called Cell Biology or Cytology.    A cell is the smallest unit of life that can replicate independently, and cells are often called the "building blocks of life"    Cell Biology deals with : Life cycle  Structure and organisation of cell organelles and their physiological properties.  Metabolic processes  Interactions with their environment  Signalling pathways.

Q: A mother can do a certain job in x hours. Her daughter takes twice as long to do the job. Working together, they can do the job in 6 hours. How many hours does the mother take to do the job ? 1282 0

  • 1
    3
    Correct
    Wrong
  • 2
    6
    Correct
    Wrong
  • 3
    9
    Correct
    Wrong
  • 4
    12
    Correct
    Wrong
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Answer : 3. "9"
Explanation :

Answer: C) 9 Explanation: The mother completes the job in x hours.So, the daughter will take 2x hours to complete the same job.   In an hour, the mother will complete 1/x of the total job.In an hour, the daughter will complete 1/2x of the total job.   So, if the mother and daughter work together, in an hour they will complete 1/x + 1/2x of the job.i.e., in an hour they will complete 3/2x of the job.   The question states that they complete the entire task in 6 hours if they work together.i.e., they complete 1/6 th of the task in an hour.   Equating the two information, we get 3/2x = 1/6By solving for x, we get 2x = 18 or x = 9.   The mother takes 9 hours to complete the job.

Q: Long Sightedness means 1282 0

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    near images are blurry
    Correct
    Wrong
  • 2
    far images are blurry
    Correct
    Wrong
  • 3
    Both A & B
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 1. "near images are blurry"
Explanation :

Answer: A) near images are blurry Explanation: Long sightedness is a common vision condition in which nearby objects are blurry.   In this situation, the person with this condition of the eye where the curvature of the cornea is flat or the axial length of the eyeball is short. When light enters the eye, it does not focus directly on the retina, but focuses beyond the retina. This causes near images to appear out of focus and blurred.     Long sightedness is also called hyperopia, and sometimes presbyopia.

Q: Find the value of 1.21x0.91.1x0.11? 1281 0

  • 1
    0
    Correct
    Wrong
  • 2
    1
    Correct
    Wrong
  • 3
    3
    Correct
    Wrong
  • 4
    5
    Correct
    Wrong
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Answer : 3. "3"
Explanation :

Answer: C) 3 Explanation: Given   1.21x0.91.1x0.11   = 1.21x100x0.9x101.1x10x0.11x100   = 9   = 3.

Q: 'International Plastic Bag Free Day' is observed on which date ? 1279 0

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

Answer: A) 3 July Explanation: International Plastic Bag Free Day was observed on 3rd of July 2017. It has been dedicated to heightening awareness about plastic and disposable carrying devices. International Plastic Bag Free Day gives us an opportunity to remind ourselves, and others, that every action we take, and every bag we dispose of effects the lives of everyone in the world for generations to come.

Q: Which is in India wins Pierre L'Enfant International Planning Excellence Award 2017 ? 1279 0

  • 1
    Banglore
    Correct
    Wrong
  • 2
    Hyderabad
    Correct
    Wrong
  • 3
    Bhubaneshwar
    Correct
    Wrong
  • 4
    Delhi
    Correct
    Wrong
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Answer : 3. "Bhubaneshwar"
Explanation :

Answer: C) Bhubaneshwar Explanation: The American Planning Association (APA) has announced this year's international excellence award for the Bhubaneswar smart city project. The award called Pierre L'Enfant International Planning Excellence Award 2017 will be given on May 8 in New York city. This is the first time in the 50 years history of APA's annual award programme that an Indian city has been recognised for its planning efforts.

Q: The edge of three cubes of metal is 3 m, 4 m and 5 m. They are melted and formed into a single cube. Find the edge of the new cube  ? 1278 0

  • 1
    15 m
    Correct
    Wrong
  • 2
    4 m
    Correct
    Wrong
  • 3
    6 m
    Correct
    Wrong
  • 4
    9 m
    Correct
    Wrong
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Answer : 3. "6 m"
Explanation :

Answer: C) 6 m Explanation: The edge of the new cube is = 33+43+53 = a3 => a = 6 m.

Q: Pharaohs : Egypt 1278 0

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Answer :
Explanation :

Pharaoh is the common title of the monarchs of ancient Egypt.   The Pharaoh in ancient Egypt was the political and religious leader of the people and held the titles 'Lord of the Two Lands' and 'High Priest of Every Temple'.

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