GATE Practice Question and Answer

  • Show AnswerHide Answer
  • Workspace

Answer : 2. "J, L"
Explanation :

Answer: B) J, L Explanation: This question concerns a committee’s decision about which five of eight areas of expenditure to reduce. The question requires you to suppose that K and N are among the areas that are to be reduced, and then to determine which pair of areas could not also be among the five areas that are reduced. The fourth condition given in the passage on which this question is based requires that exactly two of K, N, and J are reduced. Since the question asks us to suppose that both K and N are reduced, we know that J must not be reduced: Reduced         ::      K, NNot reduced   ::      J The second condition requires that if L is reduced, neither N nor O is reduced. So L and N cannot both be reduced. Here, since N is reduced, we know that L cannot be. Thus, adding this to what we’ve determined so far, we know that J and L are a pair of areas that cannot both be reduced if both K and N are reduced: Reduced        ::      K, NNot reduced  ::      J, L Answer choice (B) is therefore the correct answer.

Q: Mg+O2=MgO Balance the above Chemical equation? 1757 0

  • 1
    2Mg + O2 ----> 2MgO
    Correct
    Wrong
  • 2
    2Mg + O ----> 2MgO
    Correct
    Wrong
  • 3
    2Mg + O ----> MgO2
    Correct
    Wrong
  • 4
    2Mg + O2 ----> MgO2
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "2Mg + O2 ----> 2MgO"
Explanation :

Answer: A) 2Mg + O2 ----> 2MgO Explanation: Given Equation is  Mg + O2 → MgO Balancing the Chemical Equation is nothing but Conservation of Matter. As Matter is Neither created nor Destroyed, it must be conserved. Here we have 1 Mg and 2 O on the left side and 1 Mg and 1 O on the right side To balance that, add 1 Mg on the left side so that it becomes 2 Mg and 2 O on the left side i.e, 2 Mg + O2 → 2 MgO Here it has 2 Mg & 2 O on the left side and 2 Mg and 2 O on the right side and the Chemical equation is Balanced.

Q: What Asks But Never Answers? 1679 0

  • 1
    Teacher
    Correct
    Wrong
  • 2
    Telephone
    Correct
    Wrong
  • 3
    Letter
    Correct
    Wrong
  • 4
    Owl
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "Owl"
Explanation :

Answer: D) Owl Explanation: An owl. "What noise does an owl make? The sound an Owl makes, it sounds like, "Who?" to our ears. They sounds entire lives asking the same question, but they'll never give any answers.

Q: 18 as a decimal? 1521 0

  • 1
    0.375
    Correct
    Wrong
  • 2
    0.247
    Correct
    Wrong
  • 3
    0.214
    Correct
    Wrong
  • 4
    0.125
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "0.125"
Explanation :

Answer: D) 0.125 Explanation: Here  18 in decimal means 8th part in 1. We know that 110 = 0.1 Then,   18 = ? => ? = 18 x 0.1110= 0.1 x 108= 0.5418= 0.125

Q: Find the Odd One Out? 3, 4, 14, 48, 576, 27648 1882 0

  • 1
    4
    Correct
    Wrong
  • 2
    14
    Correct
    Wrong
  • 3
    48
    Correct
    Wrong
  • 4
    27648
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "14"
Explanation :

Answer: B) 14 Explanation: Given Number series is :   3   4   14   48   576   27648   It follows a pattern that,   3   4   4 x 3 = 12   but not 14   12 x 4 = 48   48 x 12 = 576   576 x 48 = 27648       Hence, the odd one in the given Number Series is 14.

Q: Mirage is an example of 1849 0

  • 1
    Reflection of light & Refraction of light
    Correct
    Wrong
  • 2
    Dispersion of light
    Correct
    Wrong
  • 3
    Total Internal Reflection
    Correct
    Wrong
  • 4
    Refraction of light & Total Internal Reflection of light
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "Refraction of light & Total Internal Reflection of light"
Explanation :

Answer: D) Refraction of light & Total Internal Reflection of light Explanation: A Mirage is a naturally occurring optical phenomenon in which light rays bend to produce a displaced image of distant objects or the sky. It is caused due to Total internal Reflection. It is an optical illusion observed in deserts or hot summer days due to which a person sees a pond of water some distance ahead of him in which the surrounding objects appear inverted. How Mirage Forms:: 1. The temperature of other layers of atmosphere goes on decreasing as we go up.2. Therefore density and refractive index of air changes as one goes up.3. Thus a ray of light,gets refracted more and more away from the normal.4. At a particular angle when a ray of light exceeds critical angle, total internal reflection takes place and ray of light gets reflected in the same medium.5. when the reflected ray reaches our eye, it appears as coming from tree or sky .6. Hence the inverted image of tree creates an impression from a pond of water.

Q: Which statement fits the Frontier Ethic? 2009 1

  • 1
    Recycle plastic
    Correct
    Wrong
  • 2
    Help those in need
    Correct
    Wrong
  • 3
    He who has more toys wins
    Correct
    Wrong
  • 4
    Walk lightly on Earth
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "He who has more toys wins"
Explanation :

Answer: C) He who has more toys wins Explanation: Frontier Ethic is Spending Earth's assets at the cost of losing resource capital. A frontier ethic assumes that the earth has an unlimited supply of resources. It is the notion of disregarding the Earth for the benefit or gain of man. If resources run out in one area, more can be found elsewhere or alternatively human ingenuity will find substitutes. This attitude sees humans as masters who manage the planet. It is completely Anthropocentric.

Q: Which Word Does Not Belong with the Others 5405 0

  • 1
    VDU
    Correct
    Wrong
  • 2
    Speakers
    Correct
    Wrong
  • 3
    Plotter
    Correct
    Wrong
  • 4
    Joystick
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "Joystick"
Explanation :

Answer: D) Joystick Explanation: Here Joystick is the word doesn't belong with the others. Because Except Joystick all others are Output Devices whereas Joystick is Input Device. VDU - Visual Display Unit - Monitor to display Speakers - Output sound Plotter - used to produce single or multiple colored images.

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully