IIT JEE Practice Question and Answer

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Answer :
Explanation :

Day               Play Monday        No playTuesday           PWednesday       SThursday          RFriday              QSaturday          T Answers : From the above table : 1) On Friday play Q was organised. 2) On Monday Noplay  was organised. 3)  On Thursday Play R was organised.

Q: An order was placed for the supply of a carpet whose breadth was 6 m and length was 1.44 times the breadth. What be the cost of a carpet whose length and breadth are 40% more and 25% more respectively than the first carpet. Given that the ratio of carpet is Rs. 45 per sq. m ? 5479 0

  • 1
    Rs. 4082.40
    Correct
    Wrong
  • 2
    Rs. 1024.21
    Correct
    Wrong
  • 3
    Rs. 2810.6
    Correct
    Wrong
  • 4
    Rs. 3214
    Correct
    Wrong
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Answer : 1. "Rs. 4082.40"
Explanation :

Answer: A) Rs. 4082.40 Explanation: Length of the first carpet = (1.44)(6) = 8.64 cm Area of the second carpet = 8.64(1 + 40/100) 6 (1 + 25/100) = 51.84(1.4)(5/4) sq m = (12.96)(7) sq m Cost of the second carpet = (45)(12.96 x 7) = 315 (13 - 0.04) = 4095 - 12.6 = Rs. 4082.40

Q: World Wide Web is being standard by 5458 1

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    W3C
    Correct
    Wrong
  • 2
    World Wide Web Standard
    Correct
    Wrong
  • 3
    Worldwide corporation
    Correct
    Wrong
  • 4
    World Wide Consortium
    Correct
    Wrong
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Answer : 1. "W3C"
Explanation :

Answer: A) W3C Explanation: World Wide Web is being standard by W3C.   The World Wide Web Consortium (W3C) is an international community where Member organizations, a full-time staff, and the public work together to develop Web standards. Led by Web inventor and Director Tim Berners-Lee and CEO Jeffrey Jaffe, W3C's mission is to lead the Web to its full potential.

Q: Reading of a barometer going down is an indication of 5457 0

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    Storm
    Correct
    Wrong
  • 2
    Rainfall
    Correct
    Wrong
  • 3
    Snow
    Correct
    Wrong
  • 4
    Intense heat
    Correct
    Wrong
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Answer : 2. "Rainfall"
Explanation :

Answer: B) Rainfall Explanation: Barometer is instrument which is used to measure to pressure. A slow downfall of reading suggests a low pressure area is passing in a nearby region, it may rains. If the reading is going down very fast then its an indication of storm (within 5-6 hours).

Q: The largest measuring cylinder that can accurately fill 3 tanks of capacity 98, 182 and 266 litres each, is of capacity ? 5449 0

  • 1
    7 lts
    Correct
    Wrong
  • 2
    14 lts
    Correct
    Wrong
  • 3
    98 lts
    Correct
    Wrong
  • 4
    42 lts
    Correct
    Wrong
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Answer : 2. "14 lts"
Explanation :

Answer: B) 14 lts Explanation: To know the the measuring cylinder that can fill all the given capacities , they must be divisible by the required number. 98,182,266 all are divisible by 14 So  14 litres  is the largest cylinder that can fill all the given cylinders.                                        (or) The other method is take HCF of all given capacities i.e 98, 182 and 266.

Q: Cup : Lip :: Bird : ? 5438 0

  • 1
    Grass
    Correct
    Wrong
  • 2
    Forest
    Correct
    Wrong
  • 3
    Beak
    Correct
    Wrong
  • 4
    Bush
    Correct
    Wrong
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Answer : 1. "Grass"
Explanation :

Answer: A) Grass Explanation: Cup is used to drink something with the help of lips. Similarly, birds collect grass with the help of beak to make her nest.   Hence, Cup : Lip :: Bird : Grass.

Q: The incomes of two persons A and B are in the ratio 3:4. If each saves Rs.100 per month, the ratio of their expenditures is 1:2. Find their incomes  ? 5434 0

  • 1
    200, 400
    Correct
    Wrong
  • 2
    100, 300
    Correct
    Wrong
  • 3
    100, 200
    Correct
    Wrong
  • 4
    150, 200
    Correct
    Wrong
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Answer : 4. "150, 200"
Explanation :

Answer: D) 150, 200 Explanation: The incomes of A and B be 3P and 4P. Expenditures = Income - Savings (3P - 100) and (4P - 100) The ratio of their expenditure = 1:2 (3P - 100):(4P - 100) = 1:2 2P = 100 => P = 50 Their incomes = 150, 200

Q: Odometer is to Mileage as Compass is to 5433 0

  • 1
    Direction
    Correct
    Wrong
  • 2
    Niddle
    Correct
    Wrong
  • 3
    Speed
    Correct
    Wrong
  • 4
    Altitude
    Correct
    Wrong
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Answer : 1. "Direction"
Explanation :

Answer: A) Direction Explanation: An odometer is an instrument which is used to measure Mileage of a vehicle. In the same way, Compass is an instrument used to know the direction.   Hence, Odometer : Mileage :: Compass :: Direction.

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