GATE Practice Question and Answer

Q: A bag contains 3 red balls, 5 yellow balls and 7 pink balls. If one ball is drawn at random from the bag, what is the probability that it is either pink or red? 1853 0

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

Answer: A) 2/3 Explanation: Given number of balls = 3 + 5 + 7 = 15 One ball is drawn randomly = 15C1 probability that it is either pink or red = 7C1 + 3C115C1 = 7 + 315 = 1015 = 23

Q: Book is to chapter as organization is to 1853 0

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Answer :
Explanation :

A book is consists of various chapters, so as the Organization consists of various departments. Therefore if Book is to chapter so organization is to department.   Hence, Book : Chapter :: Organisation : Department.

Q: 2/3 as a decimal 1853 0

  • 1
    0.47
    Correct
    Wrong
  • 2
    6.77
    Correct
    Wrong
  • 3
    0.67
    Correct
    Wrong
  • 4
    0.07
    Correct
    Wrong
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Answer : 3. "0.67"
Explanation :

Answer: C) 0.67 Explanation: To convert a fraction into decimal, just take the number on top which we called the numerator and divide it by the number at the bottom which we called the denominator. 2/3 How it comes : 2 ÷ 3 = 0 bring down the decimal point. 20 ÷ 3 = 6 and carry the remainder 2 to make 20 20 ÷ 3 = 6 and carry the remainder 2 to make 20 20 ÷ 3 = 6 and carry the remainder 2 to make 20 etc... This gives the recurring decimal 0.6666... If we round off to two decimals , then it becomes 0.67.   Hence, decimal fraction of 2/3 = 0.67.

Q: Find the next number in the series 265, 269, 278, 284, ? 1852 0

  • 1
    309
    Correct
    Wrong
  • 2
    319
    Correct
    Wrong
  • 3
    298
    Correct
    Wrong
  • 4
    415
    Correct
    Wrong
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Answer : 1. "309"
Explanation :

Answer: A) 309 Explanation: The pattern in the given series is +4, +9, +16, +25, ... i.e. 22,32,42,52... The next number is 284+25 = 309.

Q: Economic resources are also called 1851 0

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Answer :
Explanation :

Economic resources include land, labour, capital and entrepreneurship.  Entrepreneurship is also considered an economic resource because individuals are responsible for creating businesses and moving economic resources in the business environment.   These economic resources are also called as Factors of production.

Q: Modem is used mostly for ? 1850 0

  • 1
    A modern empty memory modules
    Correct
    Wrong
  • 2
    Connecting to internet
    Correct
    Wrong
  • 3
    Mostly for file system
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 2. "Connecting to internet"
Explanation :

Answer: B) Connecting to internet Explanation: A modem is nothing but short for Modulator and Demodulator. It is used mostly for connecting to the internet. A modem is a device or program that enables a computer to transmit data over, for example, telephone or cable lines. Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves.

Q: Q = mc∆T refers to 1850 0

  • 1
    Enthalpy formula
    Correct
    Wrong
  • 2
    Heat Transfer formula
    Correct
    Wrong
  • 3
    Specific Heat formula
    Correct
    Wrong
  • 4
    Heat of Vaporization
    Correct
    Wrong
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Answer : 3. "Specific Heat formula"
Explanation :

Answer: C) Specific Heat formula Explanation: Q = mc∆T refers to Specific Heat formula.   When heat energy is added to a substance, the temperature will change by a certain amount. The relationship between heat energy and temperature is different for every material, and the specific heat is a value that describes how they relate.   Q = mc∆T   Q = heat energy (Joules, J) m = mass of a substance (kg) c = specific heat (units J/kg∙K) ∆T = change in temperature (Kelvins, K)

Q: Organisms need Nutrients in order to 1850 0

  • 1
    Breaking down food
    Correct
    Wrong
  • 2
    Utilize chemical compounds
    Correct
    Wrong
  • 3
    recycling
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 1. "Breaking down food"
Explanation :

Answer: A) Breaking down food Explanation: Nutrients are necessary for break down the food and supply energy to the organisms and to carry out essential life functions. Important nutrients are Hydrogen, Carbon and Oxygen.   Some more important nutrients for plants are : Potassium, Sulphur, Nitrogen, Phosphorous, Calcium and Magnesium.

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