IIT JEE Practice Question and Answer

Q: CK169JROS2419TXKM??PV 2251 0

  • 1
    14,21
    Correct
    Wrong
  • 2
    21,14
    Correct
    Wrong
  • 3
    56,84
    Correct
    Wrong
  • 4
    84,56
    Correct
    Wrong
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Answer : 2. "21,14"
Explanation :

Answer: B) 21,14 Explanation: Putting A=1, B=2, C=3,..., M=13,....,X=24,Y=25, Z=26, we have :        JR = J + R2 + 2 = 10 + 18 2 + 2 = 16       CK = C + K2 + 2 =  3 + 112 + 2 = 9       TX = T + X2+ 2 = 20 + 242 + 2 = 24       OS = O + S2 + 2 = 15 + 192 + 2 = 19        So, the missing numbers are :       21 and 14       Hence, the answer is (b).

Q: 2.5, 3.5, 9, 40, ? Find the next number in the above-given series? 2251 0

  • 1
    316
    Correct
    Wrong
  • 2
    328
    Correct
    Wrong
  • 3
    323
    Correct
    Wrong
  • 4
    340
    Correct
    Wrong
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Answer : 2. "328"
Explanation :

Answer: B) 328 Explanation: 2.5 × 1 + 1 = 3.5 3.5 × 2 + 2 = 9 9 × 4 + 4 = 40 40 × 8 + 8 = 328

Q: The largest 4 digit number exactly divisible by 88 is ? 2251 0

  • 1
    9944
    Correct
    Wrong
  • 2
    9768
    Correct
    Wrong
  • 3
    8888
    Correct
    Wrong
  • 4
    9988
    Correct
    Wrong
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Answer : 1. "9944"
Explanation :

Answer: A) 9944 Explanation: The largest 4 digit number is = 9999After dividing 9999 with 88, we get 55 as remainderso largest 4 digit number divisible by 88 = 9999-55 = 9944.

Q: Grand Central Terminal Park Avenue is the world's 2250 0

  • 1
    smallest railway station
    Correct
    Wrong
  • 2
    largest railway station
    Correct
    Wrong
  • 3
    longest railway station
    Correct
    Wrong
  • 4
    None of above
    Correct
    Wrong
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Answer : 2. "largest railway station"
Explanation :

Answer: B) largest railway station Explanation: Grand Central Terminal also referred to as Grand Central Station or Grand Central is the world’s largest railway station in terms of platforms in New York City with 44 platforms covering 48 acres.

Q: Light : Blind 2250 0

  • 1
    Tongue : Sound
    Correct
    Wrong
  • 2
    Voice : Vibration
    Correct
    Wrong
  • 3
    Language : Deaf
    Correct
    Wrong
  • 4
    Speech : Dumb
    Correct
    Wrong
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Answer : 4. "Speech : Dumb"
Explanation :

Answer: D) Speech : Dumb Explanation: Here the two pair of words related in such a way that, a blind can't see the light. Similarly, a dumb cannot speech.   Hence, Light : Blind :: Speech : Dumb.

Q: In what ratio must wheat at Rs. 3.20/kg be mixed with wheat at Rs. 2.90/kg so that the mixture be worth Rs. 3/kg? 2248 0

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

Answer: C) 2:1 Explanation: Given rate of wheat at cheap = Rs. 2.90/kg Rate of wheat at cost = Rs. 3.20/kg Mixture rate = Rs. 3/kg Ratio of mixture =            2.90                              3.20                               3 (3.20 - 3 = 0.20)            (3 - 2.90 = 0.10)   0.20 : 0.10 = 2:1   Hence, wheat at Rs. 3.20/kg be mixed with wheat at Rs. 2.90/kg in the ratio of 2:1, so that the mixture be worth Rs. 3/kg.

Q: What does 'M' stand for in chemistry? 2248 0

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Answer :
Explanation :

'M' is used as a unit of molarity and stands for mole per litre i.e, number of moles of solute per liter of solution.

Q: A shopkeeper sells one-third of his goods at a profit of 10%, another one-third at a profit of 20%, and the rest at a loss of 6%.What is his overall profit percentage ? 2247 0

  • 1
    6%
    Correct
    Wrong
  • 2
    8%
    Correct
    Wrong
  • 3
    10%
    Correct
    Wrong
  • 4
    12%
    Correct
    Wrong
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Answer : 2. "8%"
Explanation :

Answer: B) 8% Explanation: Let the shopkeeper buy 300g for Rs.300. Now he sells 100g for Rs.110, another 100g for Rs120, and the rest 100g for Rs94.    Therefore, the total amount he receives = Rs.110 + Rs.120 + Rs.94 = 324.    Therefore, the shopkeeper spends Rs.300 and gets back Rs.324.   Therefore, his profit percentage = 24300x100 % = 8%

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