GATE Practice Question and Answer

Q: "Light years" is the unit of _____? 1664 0

  • 1
    Acceleration
    Correct
    Wrong
  • 2
    Distance
    Correct
    Wrong
  • 3
    Light Intensity
    Correct
    Wrong
  • 4
    Weight
    Correct
    Wrong
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Answer : 2. "Distance"
Explanation :

Answer: B) Distance Explanation: A Light-year is a distance that light travels in the vacuum in one Julian year (365.25 days). The light-year is a unit of length used to express astronomical distances. It is about 9.5 trillion kilometers or 5.9 trillion miles.

Q: India’s longest bridge “Dhola-Sadia Bridge” has built over which tributary of the Brahmaputra River ? 1664 0

  • 1
    Kameng River
    Correct
    Wrong
  • 2
    Lohit River
    Correct
    Wrong
  • 3
    Subansiri River
    Correct
    Wrong
  • 4
    Manas River
    Correct
    Wrong
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Answer : 2. "Lohit River"
Explanation :

Answer: B) Lohit River Explanation: The Prime Minister Narendra Modi has inaugurated India’s longest bridge “Dhola-Sadia Bridge” in Assam on May 26, 2017. This three lane, 9.15 kilometre bridge has been built over river Lohit, a tributary of the Brahmaputra river. It links Dhola in Assam to Sadia. The bridge will reduce the distance from Rupai on NH- 37 in Assam to Meka-Roing on NH-52 in Arunachal Pradesh by 165 KM. The travel time between the two places will come down from the current six hours to just one hour, a total five hour reduction. This will result in saving of petrol and diesel worth Rs 10 Lakh per day. It will also cater to the strategic requirements of the country in the border areas of Arunachal Pradesh, besides facilitating numerous hydro power projects coming up in the state.

Q: K, L and M can do a piece of work in 20, 30 and 60 days respectively. In how many days can K do the total work if he is assisted by L and M on every third day ? 1663 0

  • 1
    15 days
    Correct
    Wrong
  • 2
    13 days
    Correct
    Wrong
  • 3
    12 days
    Correct
    Wrong
  • 4
    10 days
    Correct
    Wrong
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Answer : 1. "15 days"
Explanation :

Answer: A) 15 days Explanation: In one day work done by K = 1/20 Work done by K in 2 days = 1/10   Work done by K,L,M on 3rd day =1/20 + 1/30 + 1/60 = 1/10 Therefore, workdone in 3 days is = 1/10 + 1/10 = 1/5   1/5th of the work will be completed at the end of 3 days. The remaining work = 1 - 1/5 = 4/5 1/5 of work is completed in 3 days Total work wiil be done in 3 x 5 = 15 days.

Q: An express traveled at an average speed of 100 km/hr, stopping for 4 min after every 75 km. How long did it take to reach its destination 600 km from the starting point ? 1663 0

  • 1
    6 hrs 24 min
    Correct
    Wrong
  • 2
    6 hrs
    Correct
    Wrong
  • 3
    7 hrs 21 min
    Correct
    Wrong
  • 4
    6 hrs 28 min
    Correct
    Wrong
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Answer : 4. "6 hrs 28 min"
Explanation :

Answer: D) 6 hrs 28 min Explanation: Time taken to cover 600 km = 600/100 = 6 hrs. Number of stoppages = 600/75 - 1 = 7 Total time of stoppages = 4 x 7 = 28 min Hence, total time taken = 6 hrs 28 min.

Q: Which one of the following foreign agencies will assist the municipal agencies to improve quality of municipal schools through its School Excellence Programmes(SEP) ? 1663 0

  • 1
    IMF
    Correct
    Wrong
  • 2
    UNDP
    Correct
    Wrong
  • 3
    ADB
    Correct
    Wrong
  • 4
    UNICEF
    Correct
    Wrong
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Answer : 3. "ADB"
Explanation :

Answer: C) ADB Explanation: Asian Development Bank (ADB) announced that it will assist the municipal agencies to improve quality of municipal schools through its School Excellence Programme (SEP).

Q: The average age of Vishal and Raghavendra is 24 years. If a new person Veerender is also included, the average age is increased by 1.5 years. What is the age of Veerender? 1662 0

  • 1
    28.5 yrs
    Correct
    Wrong
  • 2
    29.5 yrs
    Correct
    Wrong
  • 3
    30.5 yrs
    Correct
    Wrong
  • 4
    27 yrs
    Correct
    Wrong
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Answer : 1. "28.5 yrs"
Explanation :

Answer: A) 28.5 yrs Explanation: According to the given data, (V + R)/2 = 24 Now, after joining of Veerender, V + R + D)/3 = 25.5 Hence, Veerender Age = 3(25.5) - 2(24) = 76.5 - 48 = 28.5 years.

Q: A is sister of B who is mother of C who is mother of D. E is the grand mother of D. Then how C is related to E ? 1661 0

  • 1
    Sister
    Correct
    Wrong
  • 2
    Daughter
    Correct
    Wrong
  • 3
    Mother
    Correct
    Wrong
  • 4
    Daughter-in-law
    Correct
    Wrong
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Answer : 4. "Daughter-in-law"
Explanation :

Answer: D) Daughter-in-law Explanation:         GM    GMA ---- B ---- E         |         |         C         |         |         D (Grand son or daughter)

Q: What are the sides of the dna ladder made of 1660 0

  • 1
    nitrates and sugars
    Correct
    Wrong
  • 2
    sugars and hydrates
    Correct
    Wrong
  • 3
    sugars and phosphates
    Correct
    Wrong
  • 4
    phosphates and nitrates
    Correct
    Wrong
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Answer : 3. "sugars and phosphates"
Explanation :

Answer: C) sugars and phosphates Explanation: DNA is a double-stranded molecule twisted into a helix. The shape of DNA is a double helix, which is like a twisted ladder. The sides of the ladder are made of alternating sugar and phosphate molecules. Deoxyribose, which is a pentose, and a phosphate group are the two molecules together form the two sides of the DNA. The rungs of the ladder are pairs of 4 types of nitrogen bases.

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