GATE Practice Question and Answer

Q: Vishal invested 10% more than Trishul. Trishul invested 10% less than Raghu. If the total sum of their investments is Rs. 5780, how much amount did Raghu invest ? 2106 0

  • 1
    Rs.2010
    Correct
    Wrong
  • 2
    Rs.2200
    Correct
    Wrong
  • 3
    Rs.2000
    Correct
    Wrong
  • 4
    Rs.2100
    Correct
    Wrong
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Answer : 3. "Rs.2000"
Explanation :

Answer: C) Rs.2000 Explanation: Let money invested by Raghu = Rs. xMoney invested by Trishul = 9/10 x = 0.9xMoney invested by Vishal = 9/10x * 110/100 = 0.99xAlso, x+0.9x+0.99x = 5780= x= 5780/2.89 = 2000 Therefore, amount invested by Raghu is Rs. 2000.

Q: A Step-Up Transformer Increases 2105 0

  • 1
    Power
    Correct
    Wrong
  • 2
    Current
    Correct
    Wrong
  • 3
    Frequency
    Correct
    Wrong
  • 4
    Voltage
    Correct
    Wrong
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Answer : 4. "Voltage"
Explanation :

Answer: D) Voltage Explanation: A transformer that increases voltage from primary to secondary (more secondary winding turns than primary winding turns) is called a Step-Up Transformer. Conversely, a transformer designed to do just the opposite is called a Step-Down Transformer.

Q: What goes up when rain comes down? 2105 0

  • 1
    Air
    Correct
    Wrong
  • 2
    Heat
    Correct
    Wrong
  • 3
    Umbrella
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 3. "Umbrella"
Explanation :

Answer: C) Umbrella Explanation: Yes, when rain starts falling umbrella goes up for pretecting us from wetting.

Q: Which is a characteristic of a Mixture? 2104 0

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    a pure substance
    Correct
    Wrong
  • 2
    chemically comined
    Correct
    Wrong
  • 3
    they can be mixed in some fixed ratio
    Correct
    Wrong
  • 4
    it is either homogenous or heterogenous
    Correct
    Wrong
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Answer : 4. "it is either homogenous or heterogenous"
Explanation :

Answer: D) it is either homogenous or heterogenous Explanation: A mixture is the blending of two or more dissimilar substances.   Characteristics of a Mixture: 1. It has No formula. 2. It is an impure sustance 3. They can be mixed in any ratio. 4. The properties of the mixture are the properties of its constituents. 5. Constituents can e easily seperated by physical methods.eg: Heating, Drying, Crystallization, Distillation etc... 6. It is either homogenous or heterogenous.   A major characteristic of mixtures is that the materials do not chemically combine. Mixtures can be divided into those that are evenly distributed (homogeneous) and those that aren't (heterogeneous).

Q: A fair six-sided die is rolled twice. What is the probability of getting 4 on the first roll and not getting 6 on the second roll ? 2104 0

  • 1
    1/36
    Correct
    Wrong
  • 2
    5/36
    Correct
    Wrong
  • 3
    1/12
    Correct
    Wrong
  • 4
    1/9
    Correct
    Wrong
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Answer : 2. "5/36"
Explanation :

Answer: B) 5/36 Explanation: The two events mentioned are independent. The first roll of the die is independent of the second roll. Therefore the probabilities can be directly multiplied. P(getting first 4) = 1/6 P(no second 6) = 5/6 Therefore P(getting first 4 and no second 6) = 1/6 x 5/6 = 5/36

Q: Which structure is not part of the Endomembrane System? 2101 0

  • 1
    Chloroplast
    Correct
    Wrong
  • 2
    Plasma membrane
    Correct
    Wrong
  • 3
    Nuclear envelope
    Correct
    Wrong
  • 4
    Golgi apparatus
    Correct
    Wrong
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Answer : 1. "Chloroplast"
Explanation :

Answer: A) Chloroplast Explanation: The endomembrane system is composed of the different membranes that are suspended in the cytoplasm within a eukaryotic cell. These membranes divide the cell into functional and structural compartments or organelles. In eukaryotes, the organelles of the endomembrane system include the nuclear membrane, the endoplasmic reticulum, the Golgi apparatus, lysosomes, vesicles, endosomes and the cell membrane, among others.

Q: If 'A$B' means ' A is father of B ', 'A#B' means ' A is daughter of B ', 'A@B' means ' A is sister of B ' then  how is K related to Lin "H@K$L#M" ? 2101 0

  • 1
    Husband
    Correct
    Wrong
  • 2
    Uncle
    Correct
    Wrong
  • 3
    Father
    Correct
    Wrong
  • 4
    Cannot be determined
    Correct
    Wrong
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Answer : 1. "Husband"
Explanation :

Answer: A) Husband Explanation:

Q: Planets do not twinkle because 2100 0

  • 1
    Far distance
    Correct
    Wrong
  • 2
    Total internal reflection
    Correct
    Wrong
  • 3
    Refraction
    Correct
    Wrong
  • 4
    Near distance
    Correct
    Wrong
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Answer : 4. "Near distance"
Explanation :

Answer: D) Near distance Explanation: Stars twinkle because they’re so far away from Earth that when light from the stars passes through the atmosphere, it is bent countless times due to refraction, making it look like as if they were blinking. The sun and other planets doesn’t twinkle because it’s too close to Earth compared to other stars.

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