IIT JEE Practice Question and Answer

Q: The product of a number and its multiplicative inverse is 4999 0

  • 1
    1
    Correct
    Wrong
  • 2
    0
    Correct
    Wrong
  • 3
    -1
    Correct
    Wrong
  • 4
    Infinity
    Correct
    Wrong
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Answer : 1. "1"
Explanation :

Answer: A) 1 Explanation: The mutiplicative inverse of a number is nothing but a reciprocal of a number. Now, the product of a number and its multiplicative inverse is always equal to 1.   For example : Let the number be 15 Multiplicative inverse of 15 = 1/15 The product of a number and its multiplicative inverse is = 15 x 1/15 = 1.

Q: " Hopman cup "  is related to which sports  ? 4990 0

  • 1
    Cricket
    Correct
    Wrong
  • 2
    Badminton
    Correct
    Wrong
  • 3
    Lawn Tennis
    Correct
    Wrong
  • 4
    Football
    Correct
    Wrong
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Answer : 3. "Lawn Tennis"
Explanation :

Answer: C) Lawn Tennis Explanation: Law Tennis Hopman cup is a hard-court tennis tournament held every year in Australia. Teams from different countries participates in the tournament.

Q: In a class of 39 students the ratio of boys and girls is 2 : 1. Radhika ranks 15th among all the students from top and 8th among girls from bottom. How many boys are there below Radhika ? 4989 0

  • 1
    9
    Correct
    Wrong
  • 2
    17
    Correct
    Wrong
  • 3
    11
    Correct
    Wrong
  • 4
    15
    Correct
    Wrong
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Answer : 2. "17"
Explanation :

Answer: B) 17 Explanation: Total student= 39, boys : girls = 2:1, hence no of boys= 2/3(39)= 26num of girls= 1/3(39) = 13 , since radhika ranked 15 among 39 student from topand ranked 8 among girls from bottom , this means 7 girls are below radhika, rest 13-9= 5 girls are above her, now from 14 toper 5 are girls hence 14-5=9 boys.Hence num of boys below radhika are 26-9=17

Q: Prophet of New India is 4986 0

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    Dayanand Saraswathi
    Correct
    Wrong
  • 2
    Sri Ramakrishna
    Correct
    Wrong
  • 3
    Swamy Vivekananda
    Correct
    Wrong
  • 4
    Raja Ram Mohan Roy
    Correct
    Wrong
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Answer : 2. "Sri Ramakrishna"
Explanation :

Answer: B) Sri Ramakrishna Explanation: Sri Ramakrishna is called as the Prophet of New India. Sri Ramakrishna (1836-86) mostly known as Ramakrishna Paramhamsa was a spiritual genius now respected in India and abroad as an outstanding saint of our times. His life and thoughts represents the highest and best of modern Hindu philosophy and practice. Reverence and admiration for him amongst Bengali elites led to the formation of the Ramakrishna Mission by his chief disciple Swami Vivekananda. His devotees look upon him as an incarnation or Avatara of the formless Supreme Brahman as described in the Vedanta while some devotees see him as an avatara of Vishnu.

Q: If A x B means A is to the south of B; A + B means A is to the north of B; A % B means A is to the east of B; A - B means A is to the west of B; then in P % Q + R - S, S is in which direction with respect to Q ? 4962 0

  • 1
    South-East
    Correct
    Wrong
  • 2
    North-West
    Correct
    Wrong
  • 3
    East
    Correct
    Wrong
  • 4
    West
    Correct
    Wrong
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Answer : 1. "South-East"
Explanation :

Answer: A) South-East Explanation: P % Q + R - S=> P is to the East of Q, who is to the North of R, who is to the West of S.=> Q.....P      R.....S=> With respect to Q, S is to the South-East of Q.

Q: A hater of knowledge and learning is 4932 0

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    Philologist
    Correct
    Wrong
  • 2
    Misologist
    Correct
    Wrong
  • 3
    Bibliophile
    Correct
    Wrong
  • 4
    Misogynist
    Correct
    Wrong
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Answer : 2. "Misologist"
Explanation :

Answer: B) Misologist Explanation: The one word substitution for a hater of knowledge and learning is Misologist.

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Answer : 2. "8"
Explanation :

Answer: B) 8 Explanation:     AmitBharatNo.of Days4540Efficiency2.22Percent(=145)2.5 Percent(=140)   Amit did the work in 56 days = 56×145×2=2845    Therefore, Rest work 17/45 was done by Amit and Bharath = 174517360 = 8 days       ( since Amit and Bharath  do the work in one day = 145+140=17360)

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Answer : 2. "6 mile/hr"
Explanation :

Answer: B) 6 mile/hr Explanation: Let the speed of river and boat be 'r' m/min and 'b' m/min.so relative speed in upstream (b-r)m/min and in downstream (b+r)m/min.Now in upstream distnce covered in 5 min is 5(b-r)milesso total distnce covered => 1 + 5(b-r)miles in upstreamIn downstream distance covered in 5min is 5(b+r)miles Now 1 + 5(b-r) = 5(b+r)1+5b-5r = 5b+5r1 = 10rr = 1/10 mile/min => 6 mile/hr.

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