IIT JEE Practice Question and Answer

Q: One-third of the boys and one-half of the girls of a college participated in a sport. If the number of participating students is 300, out of which 100 are boys. What is the total number of students in the college ? 1151 0

  • 1
    550
    Correct
    Wrong
  • 2
    575
    Correct
    Wrong
  • 3
    625
    Correct
    Wrong
  • 4
    700
    Correct
    Wrong
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Answer : 4. "700"
Explanation :

Answer: D) 700 Explanation: Let number of boys = B Number of girls = G From the given data, 1B/3 + 1G/2 = 300 But given B/3 = 100 => B = 300 G/2 = 300 - 100 G = 200 x 2 => G = 400 Therefore, total number of students in the college = B + G = 700.

Q: 4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it ? 1150 0

  • 1
    40 days
    Correct
    Wrong
  • 2
    36 days
    Correct
    Wrong
  • 3
    32 days
    Correct
    Wrong
  • 4
    34 days
    Correct
    Wrong
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Answer : 1. "40 days"
Explanation :

Answer: A) 40 days Explanation: Let 1 man's 1 day work = x and 1 woman's 1 day work = y.Then, 4x + 6y = 1/8 and 3x + 7y = 1/10Solving these two equations, we get:x = 11/400 and y = 1/40010 woman's 1 day work = (1/400 x 10) = 1/40. Hence, 10 women will complete the work in 40 days.

Q: Israel’s Rafael Defense Systems ltd has formed a joint venture with ________ to produce anti-tank guided missiles for the Indian armed forces. 1147 0

  • 1
    Goa Shipyard
    Correct
    Wrong
  • 2
    Hindustan Aeronautics Limited
    Correct
    Wrong
  • 3
    Kalyani Group
    Correct
    Wrong
  • 4
    Hindustan Aeronautics Limited
    Correct
    Wrong
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Answer : 3. "Kalyani Group"
Explanation :

Answer: C) Kalyani Group Explanation:

Q: In a slip test, K got the 15th rank and he was 44th from the bottom of the list of passed students. 4 students did not take up the slip test and 3 students were failed. What is the total strenght of the class ? 1147 0

  • 1
    63
    Correct
    Wrong
  • 2
    62
    Correct
    Wrong
  • 3
    64
    Correct
    Wrong
  • 4
    65
    Correct
    Wrong
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Answer : 4. "65"
Explanation :

Answer: D) 65 Explanation: Total strength of the class is given by 15 + 44 + 4 + 3 - 1 = 65

Q: Which is in India wins Pierre L'Enfant International Planning Excellence Award 2017 ? 1146 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  ? 1146 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: 'International Plastic Bag Free Day' is observed on which date ? 1145 0

  • 1
    3 July
    Correct
    Wrong
  • 2
    4 July
    Correct
    Wrong
  • 3
    6 July
    Correct
    Wrong
  • 4
    5 July
    Correct
    Wrong
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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: You will always find me in the past. I can be created in the present, But the future can never taint me. What am I? 1145 0

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Answer :
Explanation :

I am History.   Yes, history refers to all the past, but we can create history in the presentand it cannot be polluted in the future.

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