IIT JEE Practice Question and Answer

Q: What is the next letter in the given seriesM N J Q G ? 1495 0

  • 1
    U
    Correct
    Wrong
  • 2
    S
    Correct
    Wrong
  • 3
    T
    Correct
    Wrong
  • 4
    H
    Correct
    Wrong
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Answer : 3. "T"
Explanation :

Answer: C) T Explanation: 1ST SERIES = M J G... It decreasing by 3 alphabets.2ND SERIES = N Q... It increasing by 3 alphabets. M N J Q G T...

Q: P can do a piece of work in 5 less days than Q. If both of them can do the same work in 1119days, in how many days will Q alone do the same work  ? 1495 0

  • 1
    24 days
    Correct
    Wrong
  • 2
    25 days
    Correct
    Wrong
  • 3
    20 days
    Correct
    Wrong
  • 4
    19 days
    Correct
    Wrong
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Answer : 2. "25 days"
Explanation :

Answer: B) 25 days Explanation: Let Q complete that work in 'L' days   => 1L + 1L-5 = 9100   => 9L2-245L+500=0   L = 25 days.

Q: Which party has announced that the party is quitting from the BJP-Led NDA Alliance at the center? 1494 0

  • 1
    Shiv Sena
    Correct
    Wrong
  • 2
    Telugu Desham Party
    Correct
    Wrong
  • 3
    Lok Janshakti Party
    Correct
    Wrong
  • 4
    Janata Dal United
    Correct
    Wrong
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Answer : 2. "Telugu Desham Party"
Explanation :

Answer: B) Telugu Desham Party Explanation: Andhra Pradesh's TDP - Telugu Desam Party, today i.e on 16th March 2018 quit the NDA government at the Centre a week after two of its ministers resigned from the Union cabinet over the issue of special status for Andhra Pradesh.

Q: A town has a population of 4000 requires 140 liters of water per head. It has a tank measuring 18m x 12m x 8m. The water of this tank will suffice for ____ days? 1494 0

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

Answer: A) 3 Explanation: Water required = 4000 x 140 = 560000 lit = 560 cu.m (1 cu.m = 1000 lit) Volume of tank = 18 x 12 x 8 = 1728 cu.m Water of this tank will suffice for = 1728/560 = 3 days.

Q: What type of lens is a magnifying glass? 1493 0

  • 1
    Diverging
    Correct
    Wrong
  • 2
    Spherical
    Correct
    Wrong
  • 3
    Converging
    Correct
    Wrong
  • 4
    Achromatic
    Correct
    Wrong
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Answer : 3. "Converging"
Explanation :

Answer: C) Converging Explanation: A magnifying glass is a convex lens that is used to produce a magnified image of an object. It is also called a hand lens in laboratory contexts.

Q: In an old Palace there are 50 stairs to go on top floor. Each is 20 cm high, 30 cm wide and 60 cm long. If all the stairs are re-plastered at the rate of Rs. 4 per 100 sq.cm. What is the expenditure ? 1493 0

  • 1
    Rs. 4680
    Correct
    Wrong
  • 2
    Rs. 7600
    Correct
    Wrong
  • 3
    Rs. 6000
    Correct
    Wrong
  • 4
    Rs. 5480
    Correct
    Wrong
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Answer : 3. "Rs. 6000"
Explanation :

Answer: C) Rs. 6000 Explanation: Total are of all stairs = 50 (20x60 + 30x60) = 50 (1200 + 1800) = 50 x 3000 = 150000 sq cm. Given rate of 100 sq cm = Rs. 4 Then for 150000 sq. cm = ? => 4 x 150000/100 = Rs. 6000

Q: A 260 m long train running at the speed of 120 km/hr crosses another train running in opposite direction at the speed of 80 km/hr in 9 sec. What is the length of the other train  ? 1493 0

  • 1
    240 mts
    Correct
    Wrong
  • 2
    270 mts
    Correct
    Wrong
  • 3
    260 mts
    Correct
    Wrong
  • 4
    250 mts
    Correct
    Wrong
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Answer : 1. "240 mts"
Explanation :

Answer: A) 240 mts Explanation: Relative speed = 120 + 80 = 200 km/hr.= 200 x 5/18 = 500/9 m/sec. Let the length of the other train be L mts.Then, (L + 260)/9 = 500/9 => L = 240 mts.

Q: A person walking 6/7 of his usual rate is 30 minutes late. What is his usual time ? 1493 0

  • 1
    2 hrs 50 min
    Correct
    Wrong
  • 2
    3 hrs 25 min
    Correct
    Wrong
  • 3
    3 hrs
    Correct
    Wrong
  • 4
    2 hrs 5 min
    Correct
    Wrong
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Answer : 3. "3 hrs"
Explanation :

Answer: C) 3 hrs Explanation: Let t be the usual time. If the usual rate is 1 unit, then the unusual rate is 6/7.Balance by the distance,1 x t = (6/7)(t + 30)7t = 6(t + 30)we get t as,t = 180 minutes = 3 hrs.

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