GATE Practice Question and Answer

Q: Lux is the SI unit of 2326 0

  • 1
    luminous flux
    Correct
    Wrong
  • 2
    luminous efficiency
    Correct
    Wrong
  • 3
    intensity of illumination
    Correct
    Wrong
  • 4
    luminous intensity
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "intensity of illumination"
Explanation :

Answer: C) intensity of illumination Explanation: The lux (lx) is the SI derived unit of illuminance and luminous emittance, measuring luminous flux per unit area. It is equal to one lumen per square meter.

Q: The average of a non-zero number and its square is 11 times the number. The number is ? 2320 0

  • 1
    22
    Correct
    Wrong
  • 2
    21
    Correct
    Wrong
  • 3
    11
    Correct
    Wrong
  • 4
    17
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "22"
Explanation :

Answer: A) 22 Explanation: Let the number be 'x'.       x+x22 = 11x x2= 22x => x = 22.

  • Show AnswerHide Answer
  • Workspace

Answer : 1. "Rs. 60"
Explanation :

Answer: A) Rs. 60 Explanation: Price of 1kg fresh cashew = Rs.120Therefore, price of 10kg = Rs.120 x 10 = Rs.1200 10% of 10kg which eaten by rodents = 10 x 10/100 = 1kg. So, End of Year he had 10kg - 1kg = 9kg So, he sells that 9kg with Rs.20 per kg profit = 9 x 140 = 1260. He buy 10kg wooden box with cashew for Rs.1200 and sell that for Rs. 1260 So, profit = 1260 - 1200 = Rs.60 more money he get.

Q: Milk is an example of a 2317 0

  • 1
    Emulsion
    Correct
    Wrong
  • 2
    Solution
    Correct
    Wrong
  • 3
    Gel
    Correct
    Wrong
  • 4
    Suspension
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "Emulsion"
Explanation :

Answer: A) Emulsion Explanation: Milk is an emulsion of oil in water (o/w). Emulsion: A suspension of droplets of one liquid in another. Constituents of milk : The principal constituents of milk are water, fat, proteins, lactose (milk sugar) and minerals (salts). Milk also contains trace amounts of other substances such as pigments, enzymes, vitamins, phospholipids (substances with fatlike properties), and gases.

Q: If x = √8 - √7, y = √6 - √5 and z = √10 - 3, which of the following is true  ? 2312 0

  • 1
    x > y < z
    Correct
    Wrong
  • 2
    x < y < z
    Correct
    Wrong
  • 3
    x > y > z
    Correct
    Wrong
  • 4
    z < x < y
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "z < x < y"
Explanation :

Answer: D) z < x < y Explanation: x = √8 - √7 = 1/(√8 + √7) and y = √6 - √5 = 1/(√6 + √5) and z = √10 - 3 = 1/(√10 + 3) As (√8 + √7) > (√6 + √5), (√8 - √7) < (√6 - √5) As (√10 + 3) > (√8 + √7) > (√6 + √5) z < x < y.

Q: A man walks 6 km at a speed of 112kmph, runs 8 km at a speed of 2 kmph and goes by bus another 32 km. Speed of the bus is 8 kmph. Find the average speed of the man in kmph. 2310 0

  • 1
    4314
    Correct
    Wrong
  • 2
    4213
    Correct
    Wrong
  • 3
    2413
    Correct
    Wrong
  • 4
    3414
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "4213"
Explanation :

Answer: B) Option B Explanation: Man walked 6 km at 1.5 kmph, again he walked 8 km at speed of 2 kmph and 40 km at a speed of 8kmphtime taken indivisually: => 6/1.5 = 4 m=> 8/2 = 4 m=> 40/8 = 5 m   Average speed of man= total distance/ total time=> 54/13 = 4213 kmph

Q: What gets wetter and wetter the more it dries? 2309 0

  • 1
    Soap
    Correct
    Wrong
  • 2
    Towel
    Correct
    Wrong
  • 3
    Clothes
    Correct
    Wrong
  • 4
    Sponge
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "Towel"
Explanation :

Answer: B) Towel Explanation: Towel gets wetter and wetter the more it dries because we use that towel which is dried after used.

Q: The average age of the district level hockey team of eleven is 22 years.The average age gets increased by 1 year when the coach age is also included.what is the age of the coach ? 2308 0

  • 1
    33 yrs
    Correct
    Wrong
  • 2
    34 yrs
    Correct
    Wrong
  • 3
    35 yrs
    Correct
    Wrong
  • 4
    36 yrs
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "34 yrs"
Explanation :

Answer: B) 34 yrs Explanation: Total age of players in team = 22 x 11 = 242When coach is included, total members = 12, Avg age increases by one becomes 23Total age when coach is included = 23x12 = 276Age of coach = 276-242 = 34 yrs.

      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