GATE Practice Question and Answer

Q: Which of the following is a micro nutrient? 3202 0

  • 1
    Mg
    Correct
    Wrong
  • 2
    Cl
    Correct
    Wrong
  • 3
    P
    Correct
    Wrong
  • 4
    Ca
    Correct
    Wrong
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Answer : 2. "Cl"
Explanation :

Answer: B) Cl Explanation: The micronutrients (or trace minerals): boron (B), chlorine (Cl), manganese (Mn), iron (Fe), zinc (Zn), copper (Cu), molybdenum (Mo), nickel (Ni). and cobalt (Co).

Q: In a row, Kumar is at 7th place from the left and Pawan is at 9th place from the right. When they interchange the positions Kumar becomes 11th from left. How many were seated in the row ? 3196 0

  • 1
    19
    Correct
    Wrong
  • 2
    20
    Correct
    Wrong
  • 3
    21
    Correct
    Wrong
  • 4
    27
    Correct
    Wrong
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Answer : 1. "19"
Explanation :

Answer: A) 19 Explanation: Initialy from left 7th = kumarfrom right 9th = pawanInterchange kumar = 11th from left, from right kumar = 9th;11+8 = 19;8 is 1,2,3,4,5,6,7(pawan),8,9,10,11(kumar),12,13,14,15,16,17,18,19;simply count the 9th place from right we will get total as 19.

Q: A Certain sum of money an amounts to Rs 2500 in a span Of 5 years and further to Rs.3000 in a span of 7 years at simple interest The sum is ? 3185 0

  • 1
    Rs. 1800
    Correct
    Wrong
  • 2
    Rs. 2000
    Correct
    Wrong
  • 3
    Rs. 1400
    Correct
    Wrong
  • 4
    Rs. 1250
    Correct
    Wrong
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Answer : 4. "Rs. 1250"
Explanation :

Answer: D) Rs. 1250 Explanation: 2500 in 5th year and 3000 in 7th year So in between 2 years Rs. 500 is increased => for a year 500/2 = 250So, per year it is increasing Rs.250 then in 5 years => 250 x 5 = 1250Hence, the initial amount must be 2500 - 1250 = Rs. 1250

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Answer : 3. "J"
Explanation :

Answer: C) J Explanation: Given word is TIRADESNow the consonants T, R, D, S are replaced by S, Q, C, RAnd Vowels are I, A, E are replaced by J, B and FThey are arranged alphabeticallyNew word is BCFJQRS The fourth letter from the right end is J.

Q: Sound waves cannot travel in 3183 0

  • 1
    Vacuum
    Correct
    Wrong
  • 2
    Water
    Correct
    Wrong
  • 3
    Glass
    Correct
    Wrong
  • 4
    Hydrogen gas
    Correct
    Wrong
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Answer : 1. "Vacuum"
Explanation :

Answer: A) Vacuum Explanation: A Sound wave needs a medium for propogation. Hence, Sound cannot travel through a vacuum. A vacuum is an area without any air, like space. So sound cannot travel through space because there is no matter for the vibrations to work in.

Q: Complete the missing number in the given series. 5,  20,  76,  (—),  448 3183 0

  • 1
    185
    Correct
    Wrong
  • 2
    225
    Correct
    Wrong
  • 3
    415
    Correct
    Wrong
  • 4
    232
    Correct
    Wrong
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Answer : 2. "225"
Explanation :

Answer: B) 225 Explanation: The series follows the following pattern 5 X 5 – 5 = 20 20 X 4 – 4 = 76 76 X 3 – 3 = 225 225 X 2 – 2 = 448 Hence, the term 225 denoted by (d) completes the series

Q: Find the least number by which 175760 be divided to make it a perfect cube. 3178 0

  • 1
    6
    Correct
    Wrong
  • 2
    10
    Correct
    Wrong
  • 3
    9
    Correct
    Wrong
  • 4
    30
    Correct
    Wrong
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Answer : 2. "10"
Explanation :

Answer: B) 10 Explanation: 175760 =2³ x 2 x 5 x 13³= 2³ x 2 x 5 x 13³ To make perfect cube, it must be divided by 2 x 5 = 10

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Answer : 4. "N"
Explanation :

Answer: D) N Explanation: O should be immediately followed by M ie, the order OM should be followed. N should be immediately followed by L ie, the order NL should be followed. One play is staged between k and L and N or O should not be the first or last play. So, the order is Monday             K Tuesday            N Wednesday        L Thursday           O Friday               M

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