GATE Practice Question and Answer

Q: A disaccharide is formed by the chemical bonding of 1812 0

  • 1
    two monosaccharides
    Correct
    Wrong
  • 2
    two polysaccharides
    Correct
    Wrong
  • 3
    one monosaccharide and one polysaccharide
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 1. "two monosaccharides"
Explanation :

Answer: A) two monosaccharides Explanation: Disaccharides are formed when two monosaccharides join together by the dehydration synthesis reaction resulting in a glycosidic bond between the two monosaccharide molecules. The reaction produces water as a side product.

Q: 74.99% of 1299 + 8.98% of 1899 = ? 1812 0

  • 1
    1378
    Correct
    Wrong
  • 2
    1301
    Correct
    Wrong
  • 3
    1212
    Correct
    Wrong
  • 4
    1197
    Correct
    Wrong
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Answer : 3. "1212"
Explanation :

Answer: C) 1212 Explanation: 74.99% of 1299 + 8.98% of 1899 = ?  ? = 75 x 1400100 + 9 x 1800100 ? = 1050 + 162? = 1212.

Q: Second & fourth Saturdays and every Sunday is a holiday. How many working days will be there in a month of 31 days beginning on a Friday ? 1811 0

  • 1
    24
    Correct
    Wrong
  • 2
    23
    Correct
    Wrong
  • 3
    22
    Correct
    Wrong
  • 4
    25
    Correct
    Wrong
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Answer : 1. "24"
Explanation :

Answer: A) 24 Explanation: Given that the month begins on a Friday and has 31 days   Sundays = 3rd, 10th, 17th, 24th, 31st=> Total Sundays = 5   Every second & fourth Saturday is holiday. 2nd & 4th Saturday in every month = 2   Total days in the month = 31   Total working days = 31 - (5 + 2) = 24 days.

Q: Calender Puzzle 1811 0

  • 1
    A
    Correct
    Wrong
  • 2
    B
    Correct
    Wrong
  • 3
    C
    Correct
    Wrong
  • 4
    D
    Correct
    Wrong
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Answer : 4. "D"
Explanation :

Answer: D) D Explanation: We can't determine the last day of the next month which has 31 days because we don't know the days in present month which may be 30 or 31. And the next month may be March which contains 31 days  which implies that the present month may be February which contains 28 or 29 days.

Q: Bacteria divide by 1810 0

  • 1
    Binary Fission
    Correct
    Wrong
  • 2
    Spirilla
    Correct
    Wrong
  • 3
    RNA
    Correct
    Wrong
  • 4
    Fusion
    Correct
    Wrong
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Answer : 1. "Binary Fission"
Explanation :

Answer: A) Binary Fission Explanation: Bacteria divided and reproduce by Binary fission. In this process, the bacterium, which is a single cell, divides into two identical daughter cells. Binary fission begins when the DNA of the bacterium divides into two replicates.

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Answer : 1. "131 calls"
Explanation :

Answer: A) 131 calls Explanation: 1st supporter recieve 440 calls 2nd supporter recieve 360 calls 3rd supporter recieve 300 calls So total calls = 1100 calls ; Calls this month= 1500 So remaining calls to be distributed is 400 So Now Ratio 1st:2nd:3rd ==> 440:360:300=> 22:18:15 Now No. of More Calls 2nd supporter will get => [18/(22+18+15)] x 400=> (18/55) x 400 => 131 CallsSo 131 more Calls than last month.

Q: Rolling friction is caused by ____ from the following? 1808 0

  • 1
    Non-elastic effects
    Correct
    Wrong
  • 2
    Gravity
    Correct
    Wrong
  • 3
    Power dissipation
    Correct
    Wrong
  • 4
    Buoyancy
    Correct
    Wrong
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Answer : 1. "Non-elastic effects"
Explanation :

Answer: A) Non-elastic effects Explanation: Rolling friction or rolling drag is the force resisting the motion when a body rolls on a surface. It is mainly caused by non-elastic effects, that is, not all the energy needed for deformation of the wheel, roadbed, etc... is recovered when the pressure is removed. Another cause of rolling resistance lies in the slippage between the wheel and the surface, which dissipates energy.

Q: How many bottles of water is a gallon? 1808 0

  • 1
    16
    Correct
    Wrong
  • 2
    8
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    2
    Correct
    Wrong
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Answer : 2. "8"
Explanation :

Answer: B) 8 Explanation: The easiest way would measure it through half a liter water bottle. There are approximately 16.9 ounces(oz) of water in a 500ml water bottle.   Gallon is an imperial customary volume unit for the U.S.   As we have previously mentioned, the 16.9oz bottle is also known as 500ml in the metric system. According to U.S. standard, 1 gallon stands for 128 fluid oz.   Hence, Number of bottles in 1 gallon = 128/16.9 = 7.57 =~ 8.

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