GATE Practice Question and Answer

Q: SI unit of equivalent conductance 5483 0

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    ohm/cm
    Correct
    Wrong
  • 2
    Siemens m2/equivalent
    Correct
    Wrong
  • 3
    Siemens/equivalent
    Correct
    Wrong
  • 4
    mho/cm
    Correct
    Wrong
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Answer : 2. "Siemens m2/equivalent"
Explanation :

Answer: B) Siemens m2/equivalent Explanation: Equivalent conductance is defined as the conductance of an electrolyte solution containing one gram equivalent of the electrolyte. It is equal to the product of specific conductance (k) of the solution and the volume (V) of the solution that contains one gram equivalent of the electrolyte.    λ = k x V   Unit of spceific conductance k is Siemens / m. Volume of the solution V is m3 Now, required equivalent conductance unit is Siemens.m2/equivalent .

Q: 56% of 225 + 20% of 150 = ? - 109   Find the value of '?' in the above equation 5477 0

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    264
    Correct
    Wrong
  • 2
    220
    Correct
    Wrong
  • 3
    241
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 1. "264"
Explanation :

Answer: A) 264 Explanation: Given 56% of 225 + 20% of 150 = ? - 109 we know that a% of b = b% of a Now, 225% of 56 + 20% of 150 = ? - 109 200% of 56 + 25% of 56 + 20% of 150 = ? - 109 112 + 14 + 30 = ? - 109 ? = 112 + 14 + 30 + 109 ? = 264

Q: When the European union formed nations began to? 5448 0

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    eliminate their home governments.
    Correct
    Wrong
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    abolish many geographic boundaries.
    Correct
    Wrong
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    create one unified education system.
    Correct
    Wrong
  • 4
    cooperate on law enforcement.
    Correct
    Wrong
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Answer : 4. "cooperate on law enforcement."
Explanation :

Answer: D) cooperate on law enforcement. Explanation: When the European union formed nations began to cooperate on law enforcement. The European Union is set up with the aim of ending the frequent and bloody wars between neighbours, which culminated in the Second World War.   As of 1950, the European Coal and Steel Community begins to unite European countries economically and politically in order to secure lasting peace. The six founding countries are Belgium, France, Germany, Italy, Luxembourg and the Netherlands. The 1950s are dominated by a cold war between east and west.   The historical roots of the European Union lie in the Second World War. Europeans are determined to prevent such killing and destruction from ever happening again.

Q: A man reaches his office 20 min late, if he walks from his home at 3 km per hour and reaches 30 min early if he walks 4 km per hour. How far is his office from his house ? 5421 0

  • 1
    20 km
    Correct
    Wrong
  • 2
    16 km
    Correct
    Wrong
  • 3
    14 km
    Correct
    Wrong
  • 4
    10 km
    Correct
    Wrong
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Answer : 4. "10 km"
Explanation :

Answer: D) 10 km Explanation: Let distance = x km.Time taken at 3 kmph : dist/speed = x/3 = 20 min late.time taken at 4 kmph : x/4 = 30 min earlierdifference between time taken : 30-(-20) = 50 mins = 50/60 hours.x/3- x/4 = 50/60x/12 = 5/6x = 10 km.

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Answer : 1. "Loss of 12.5%"
Explanation :

Answer: A) Loss of 12.5% Explanation: Let the cost price be Rs. 100Then, market price is Rs. 140Now, the first discount is of 28.57% Rs.140 =~ Rs. 40Hence, its selling price = 140 - 40 = Rs. 100Now since Rana is selling at cost price, any further discount will be equal to loss percentage. The next dicount of 12.5% will be the loss percentage to Rana.

Q: Find the missing number? 5 19 49 101 181 295 ? 5388 0

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    401
    Correct
    Wrong
  • 2
    351
    Correct
    Wrong
  • 3
    449
    Correct
    Wrong
  • 4
    501
    Correct
    Wrong
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Answer : 3. "449"
Explanation :

Answer: C) 449 Explanation: Given number series is 5  19  49  101  181  295 ? Here the series follows pattern that 5   19   49   101   181   295  ?   14   30   52    80     114   (difference)       16  22   28     34 (difference)          6     6     6  (Common difference)   Therefore, the missing number in the series is ? = 295 + 115 + 34 + 6 = 449.

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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 ? 5307 0

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    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

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