IIT JEE Practice Question and Answer

Q: Find the next number in the given number series? 35, 36, 55, 111, ? 2193 0

  • 1
    278.5
    Correct
    Wrong
  • 2
    264.5
    Correct
    Wrong
  • 3
    212.5
    Correct
    Wrong
  • 4
    202
    Correct
    Wrong
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Answer : 1. "278.5"
Explanation :

Answer: A) 278.5 Explanation: The given number series is 35, 36, 55, 111, ? 35 35 x 1 + 1 = 36 36 x 1.5 + 1 = 55 55 x 2 + 1 = 111 111 x 2.5 + 1 = 278.5   Hence, the next number in the given number series is 278.5.

Q: Which city is known as "Queen of Arabian Sea"  ? 2190 0

  • 1
    Vizag
    Correct
    Wrong
  • 2
    Kakinada
    Correct
    Wrong
  • 3
    Mumbai
    Correct
    Wrong
  • 4
    Kochi
    Correct
    Wrong
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Answer : 4. "Kochi"
Explanation :

Answer: D) Kochi Explanation:

Q: Last year vivek saved 10% of his annual earnings, this year he earned 5% more than last year and he saved 12% of his annual earnings. The amount saved this year was what percentage of the amount saved last year ? 2190 0

  • 1
    87%
    Correct
    Wrong
  • 2
    98%
    Correct
    Wrong
  • 3
    138%
    Correct
    Wrong
  • 4
    126%
    Correct
    Wrong
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Answer : 4. "126%"
Explanation :

Answer: D) 126% Explanation: Suppose total earnings = Rs. 1000010% saving = 10000 x (10/100) = Rs. 1000This year 5% more income than prev year = Rs. 1050012% saving = 10500 x (12/100) = Rs. 1260Percentage of amount saved = (1260/1000) x 100 = 126%

Q: Who is the author of the book "No Full Stops in India" ? 2189 1

  • 1
    R. K. Narayan
    Correct
    Wrong
  • 2
    Mark Tully
    Correct
    Wrong
  • 3
    C. Narayan Reddy
    Correct
    Wrong
  • 4
    Ved Mehta
    Correct
    Wrong
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Answer : 2. "Mark Tully"
Explanation :

Answer: B) Mark Tully Explanation:

Q: Calculate the number of bricks, each measuring 25 cm x 15 cm x 8 cm required to construct a wall of dimensions 10 m x 4 cm x 6 m when 10% of its volume is occupied by mortar  ? 2187 0

  • 1
    720
    Correct
    Wrong
  • 2
    600
    Correct
    Wrong
  • 3
    660
    Correct
    Wrong
  • 4
    6000
    Correct
    Wrong
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Answer : 1. "720"
Explanation :

Answer: A) 720 Explanation: Let the number of bricks be 'N' 10 x 4/100 x 6 x 90/100 = 25/100 x 15/100 x 8/100 x N 10 x 4 x 6 x 90 = 15 x 2 x N => N = 720.

Q: Which of the following statements describes the glycemic index of foods? 2187 0

  • 1
    the extent to which a given food raises blood glucose and insulin levels
    Correct
    Wrong
  • 2
    the amount of insulin required to metabolize 100 grams of glucose
    Correct
    Wrong
  • 3
    an individual’s glucose/insulin ratio in a fasted state
    Correct
    Wrong
  • 4
    the glucose content of a given food
    Correct
    Wrong
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Answer : 1. "the extent to which a given food raises blood glucose and insulin levels"
Explanation :

Answer: A) the extent to which a given food raises blood glucose and insulin levels Explanation: The glycemic index or glycaemic index is a number associated with the carbohydrates in a particular type of food that indicates the effect of these carbohydrates on a person's blood glucose (also called blood sugar) level. A value of 100 represents the standard, an equivalent amount of pure glucose.   The GI represents the rise in a person's blood sugar level two hours after consumption of the food.

Q: The outermost layer of the sun is called 2187 0

  • 1
    Corona
    Correct
    Wrong
  • 2
    Chromosphere
    Correct
    Wrong
  • 3
    Radiative Zone
    Correct
    Wrong
  • 4
    Transition Region
    Correct
    Wrong
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Answer : 1. "Corona"
Explanation :

Answer: A) Corona Explanation: The outermost layer of the sun is called The Corona.   The inner layers are the Core, Radiative Zone and Convection Zone. The outer layers are the Photosphere, the Chromosphere, the Transition Region and the Corona. IRIS will focus its investigation on the Chromosphere and Transition Region.

Q: If the given two numbers are respectively 7% and 28% of a third number, then what percentage is the first of the second ? 2186 0

  • 1
    24%
    Correct
    Wrong
  • 2
    29%
    Correct
    Wrong
  • 3
    34%
    Correct
    Wrong
  • 4
    25%
    Correct
    Wrong
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Answer : 4. "25%"
Explanation :

Answer: D) 25% Explanation: Here, k = 7 and l = 28Therefore, first number = klx100 % of second number = 7/28 x 100% of second number = 25% of second number.

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