GATE Practice Question and Answer

Q: Simplify the fraction? 5 (2/7) - 3 (1/14) - 2 (1/14) - 1 (1/7) = ? + 3 (1/17) 2216 0

  • 1
    -4 (1/17)
    Correct
    Wrong
  • 2
    5 (2/17)
    Correct
    Wrong
  • 3
    -2 (1/17)
    Correct
    Wrong
  • 4
    3 (3/17)
    Correct
    Wrong
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Answer : 1. "-4 (1/17)"
Explanation :

Answer: A) -4 (1/17) Explanation: Given fraction is 5 (2/7) - 3 (1/14) - 2 (1/14) - 1 (1/7) = ? + 3 (1/17)  It can be written as  (5 - 3 - 2 - 1) + (2/7 - 1/14 - 1/14 - 1/7) = ? +  3 (1/17)  -1 + 0 - 3 (1/17) = ? => ? = -4 (1/17)

Q: Sociological analysis of religion is concerned with 2216 0

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    the purpose of life
    Correct
    Wrong
  • 2
    which religions are true and which are false
    Correct
    Wrong
  • 3
    learning the will of God
    Correct
    Wrong
  • 4
    patterns of religious activity and their effect on social life
    Correct
    Wrong
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Answer : 4. "patterns of religious activity and their effect on social life"
Explanation :

Answer: D) patterns of religious activity and their effect on social life Explanation: Sociology of religion is the study of the beliefs, practices and organizational forms of religion using the tools and methods of the discipline of sociology.   Hence, Sociological analysis of religion is concerned with patterns of religious activity and their effect on social life.

Q: A motorboat takes half time to cover a certain distance downstream than upstream. What is the ratio between rate of current and rate of boat in still water? 2216 0

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

Answer: A) 1 : 3 Explanation: Let the speed of the boat in still water is 'w' Speed of the current is 'c' Let the distance between two places is 'd' According to the question, motorboat takes half time to cover a certain distance downstream than upstream. dw+c = 12dw-c => 2w - 2c = w + c => w = 3c => c : w = 1 : 3   Hence, the ratio between rate of current(c) and rate of boat in still water(w) = 1 : 3

Q: There is a clock which shows false timing ie it shows 20 minutes less for each 1 hour. If the clock shows 12 noon now how many minutes will be lost when it shows 2 pm ? 2216 0

  • 1
    36 minutes
    Correct
    Wrong
  • 2
    48 minutes
    Correct
    Wrong
  • 3
    35 minutes
    Correct
    Wrong
  • 4
    60 minutes
    Correct
    Wrong
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Answer : 4. "60 minutes"
Explanation :

Answer: D) 60 minutes Explanation: For 1 hour, 20 minutes is slower, then for 06 miuntes - 2 minutes is slower30 minutes - 10 minutesActual time | false time 12 12 01 PM 12:40 PM (20 minutes slower) 02 PM 01:20 PM 03 PM 02:00 PM So, when actual time is 3pm, the false time is 2 pm.So, it loses 60 minutes when it shows 2 pm.

Q: What is the systematic name of Mg(NO3)2? 2214 0

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    Manganese nitrite
    Correct
    Wrong
  • 2
    Magnesium nitrite
    Correct
    Wrong
  • 3
    Magnesium nitrate
    Correct
    Wrong
  • 4
    Manganese nitrate
    Correct
    Wrong
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Answer : 3. "Magnesium nitrate"
Explanation :

Answer: C) Magnesium nitrate Explanation: Mg(NO3)2 is Magnesium nitrate.   In the case of Mg(NO3)2, the metal in the compound is magnesium (Mg), and the non-metal here is called the nitrate ion (NO3). This makes the name of the compound simply magnesium nitrate.

Q: What is the interest rate per annum, if a sum of money invested at compound interest amount to Rs. 2400 in 3 years and in 4 years to Rs. 2,520? 2214 0

  • 1
    3.5%
    Correct
    Wrong
  • 2
    4%
    Correct
    Wrong
  • 3
    5%
    Correct
    Wrong
  • 4
    6.5%
    Correct
    Wrong
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Answer : 3. "5%"
Explanation :

Answer: C) 5% Explanation: Let 'R%' be the rate of interest From the given data, 25202400 = 1 + R10041 + R1003⇒1 + R100 = 6360⇒R = 5   Hence, the rate of interest R = 5% per annum.

Q: 90 D in RA? 2214 0

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Answer :
Explanation :

90 D in RA means 90 Degrees in Right Angle. It is a logic question which is to be eloborated.   Some more of its kind are: 1. 52 W in a Y     -    52 Weeks in a Year 2. 7 C in a R        -    7 Colours in a Rainbow 3. 9 P in SS 4. 5 C in an OF 5. 12 S of the Z

Q: 125 over 1000 in Simplest Form? 2213 0

  • 1
    2/9
    Correct
    Wrong
  • 2
    1/8
    Correct
    Wrong
  • 3
    3/8
    Correct
    Wrong
  • 4
    4/7
    Correct
    Wrong
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Answer : 2. "1/8"
Explanation :

Answer: B) 1/8 Explanation: 125 over 1000 in Simplest Form means 1251000 in its simple fraction form.   Now, to get the simplest form of 125/1000, find the HCF or GCD of both numerator and denominator i.e, 125 and 1000.   HCF of 125, 1000 = 125   Then, divide both numerator and denominator by 125 i.e, 1251251000125 = 18   Hence, 18 is the simplest form of 125 over 1000.

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