IIT JEE Practice Question and Answer

Q: What kind of Room has No Doors or Windows 1992 0

  • Show AnswerHide Answer
  • Workspace

Answer :
Explanation :

Mushroom.

Q: Sixty men can stitch 150 shirts in 30 days working 8 hours a day. In how many days can 35 men stitch 200 shirts working 6 hours a day ? 1992 0

  • 1
    87.5
    Correct
    Wrong
  • 2
    89
    Correct
    Wrong
  • 3
    91.5
    Correct
    Wrong
  • 4
    93.5
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "91.5"
Explanation :

Answer: C) 91.5 Explanation: We have M1 D1 H1 / W1 = M2 D2 H2 / W2 (Variation rule)(60 x 30 x 8)/ 150 = (35 x D2 x 6) / 200 D2 = (60 x 30 x 8 x 200) / (150 x 35 x 6) => D2 = 91.42 days =~ 91.5 days.

Q: Nitrogenous Food is 1992 0

  • 1
    Proteins
    Correct
    Wrong
  • 2
    Carbohydrates
    Correct
    Wrong
  • 3
    Salts
    Correct
    Wrong
  • 4
    Lipids
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "Proteins"
Explanation :

Answer: A) Proteins Explanation: Here the Nitrogenous Food is Proteins. Nitrogenous Food :: The animal body is more than a machine. It requires fuel to enable it not only to work but also to live, even without working. A part of the food eaten must go to maintain the body Nitrogenous food compounds are sometimes classed together under the name of proteins. These may be divided into proteids, gelatinoids, and extractives.

Q: Find the odd one out of the following number series? 56, 64, 48, 90, 16, 144 1992 0

  • 1
    48
    Correct
    Wrong
  • 2
    64
    Correct
    Wrong
  • 3
    90
    Correct
    Wrong
  • 4
    16
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "90"
Explanation :

Answer: C) 90 Explanation: The given number series follows a pattern that, 56 56 + 8 = 64 64 - 16 = 48 48 + 32 = 80 (Not equal to 90) 80 - 64 = 16 16 + 128 = 144    Hence, the odd number in the given number series is 90.

Q: How many birthdays does the average person have? 1991 0

  • Show AnswerHide Answer
  • Workspace

Answer :
Explanation :

Any person can have only 1 birthday i.e, the day he was born. And every year we celebrate it's anniversaries.

Q: The letters of the word PROMISE are to be arranged so that three vowels should not come together. Find the number of ways of arrangements? 1991 0

  • 1
    4320
    Correct
    Wrong
  • 2
    4694
    Correct
    Wrong
  • 3
    4957
    Correct
    Wrong
  • 4
    4871
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "4320"
Explanation :

Answer: A) 4320 Explanation: Given Word is PROMISE. Number of letters in the word PROMISE = 7 Number of ways 7 letters can be arranged = 7! ways Number of Vowels in word PROMISE = 3 (O, I, E) Number of ways the vowels can be arranged that 3 Vowels come together = 5! x 3! ways   Now, the number of ways of arrangements so that three vowels should not come together = 7! - (5! x 3!) ways = 5040 - 720 = 4320.

Q: Two metallic plate of equal thickness and coefficient thermal conductivity K1 and K2 put together face to face. A common plate is constructed. What is equivalent K? 1991 0

  • 1
    K1k2/k1+k2
    Correct
    Wrong
  • 2
    2k1k2/k1+k2
    Correct
    Wrong
  • 3
    K1+k2/k1k2
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "2k1k2/k1+k2"
Explanation :

Answer: B) 2k1k2/k1+k2 Explanation: We know that,   The equivalent K =  L1 + L2L1K1+L2K2   where L1 & L2 are plate1 & Plate2 thicknesses, K1 & K2 are coefficient thermal conductivity of plate1 & Plate2 respectively.   But here L1 = L2 = L (say)   Then K = L+L/(L/K1 + L/K2)  =  2K1K2K1+K2

Q: Pluto dwells on the inner edge of the 1990 0

  • 1
    Main asteroid belt
    Correct
    Wrong
  • 2
    Oort cloud
    Correct
    Wrong
  • 3
    Kuiper belt
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "Kuiper belt"
Explanation :

Answer: C) Kuiper belt Explanation: Pluto dwells on the inner edge of the The Kuiper belt which is a belt of asteroids that lies on the outer edge of the solar system. Pluto is a dwarf planet that is supposed to be no longer a planet and is still considered a planet because of its history in the solar system.   It takes 248 years to make one orbit around the sun. As to where it is, depends on time.

      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