IIT JEE Practice Question and Answer

Q: Who is the first richest person in India? 1558 0

  • 1
    Mukesh Ambani
    Correct
    Wrong
  • 2
    Azim Premji
    Correct
    Wrong
  • 3
    Dilip Shangvi
    Correct
    Wrong
  • 4
    Lakshmi Mittal
    Correct
    Wrong
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Answer : 1. "Mukesh Ambani"
Explanation :

Answer: A) Mukesh Ambani Explanation: According to 2018 January reports, Mukesh Ambani is the first richest person in India being 18th in the world, followed by Azim Premji and S.P. Hinduja in second and third places.

Q: Manisha went to shop with certain amount, with which she can buy 50 Chacobar or 40 Fivestar. She uses 10% amount for petrol and out of the remaining balance, she purchases 20 Fivestar and some Chacobar. Find the number of Chacobar she can buy? 1557 0

  • 1
    20
    Correct
    Wrong
  • 2
    24
    Correct
    Wrong
  • 3
    26
    Correct
    Wrong
  • 4
    28
    Correct
    Wrong
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Answer : 1. "20"
Explanation :

Answer: A) 20 Explanation: Let the total amount be 200 {L.C.M of 40 and 50} Chacobar C.P. = 200/50 = 4 Fivestar C.P = 200/40 = 5 Remaining Money after petrol = [200 - 200×10%] = 180 Remaining money after buying fivestars = [180 - 20×5] = 80 So number of Chacobar she can buy = 80/4 = 20

Q: If a 36 cm thread is used to wrap a book, lengthwise twice and breadth wise once, what is the size of the book ? 1556 0

  • 1
    288 sq.cm
    Correct
    Wrong
  • 2
    188 sq.cm
    Correct
    Wrong
  • 3
    144 sq.cm
    Correct
    Wrong
  • 4
    244 sq.cm
    Correct
    Wrong
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Answer : 1. "288 sq.cm"
Explanation :

Answer: A) 288 sq.cm Explanation: Length of the thread is 36 cms. length wise twice breath wise once then totally thrice.so 36/3 = 12.so length is 12 x 2 = 24 cmsbreath is 12 cmsArea of the book = length x breath = 24 x 12 = 288 sq.cm

Q: At what temperature (in Fahrenheit) pure water freezes? 1556 0

  • 1
    0
    Correct
    Wrong
  • 2
    17
    Correct
    Wrong
  • 3
    32
    Correct
    Wrong
  • 4
    39
    Correct
    Wrong
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Answer : 3. "32"
Explanation :

Answer: C) 32 Explanation: 32oFWe know that T(°F) = T(°C) × 1.8 + 3232(°F) = 0(°C)

Q: Cold foods should be kept at a temperature of 1555 0

  • 1
    < 5 deg Celcius
    Correct
    Wrong
  • 2
    > 18 deg Celcius
    Correct
    Wrong
  • 3
    > 41 deg Celcius
    Correct
    Wrong
  • 4
    < -18 deg Celcius
    Correct
    Wrong
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Answer : 1. "< 5 deg Celcius"
Explanation :

Answer: A) < 5 deg Celcius Explanation: To reduce the risk of bacterial contamination, many foods must be stored in the refrigerator and thus kept below 5 degrees Celsius. These foods are often classified as ‘high-risk foods’ and include – meat, poultry, dairy, seafood, eggs, smallgoods and cooked rice and pasta. This also refers to ready-to-eat foods that have high-risk foods as ingredients and include – casseroles, quiche, pasta salad, pizza, sandwiches and many cakes.   By keeping these high-risk foods under 5 degrees Celsius it stops them from entering the ‘danger-zone’ – temperatures between 5 degrees Celsius and 60 degrees Celsius. The danger-zone is the temperature zone which provides bacteria with the perfect environment to rapidly grow and multiply to numbers that cause food poisoning.

Q: Which of the following is not a function of proteins? 1555 0

  • 1
    Build tissues such as bone and muscle
    Correct
    Wrong
  • 2
    Help to fight disease
    Correct
    Wrong
  • 3
    Nail formation
    Correct
    Wrong
  • 4
    Store and transmit Heredity
    Correct
    Wrong
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Answer : 4. "Store and transmit Heredity"
Explanation :

Answer: D) Store and transmit Heredity Explanation: Protiens can help fight specific diseases, always there to regulate cell processes and build muscle/tissues. Structural proteins also known as Fibrous proteins, are necessary components of your body. They include collagen, keratin and elastin. Collagen forms the connective framework of your muscles, bones, tendons, skin and cartilage. Keratin is the main structural component in hair, nails, teeth and skin.   Nucleic acids store and transmit heredity.

Q: 6 : 18 :: 4 : ? 1555 0

  • 1
    14
    Correct
    Wrong
  • 2
    6
    Correct
    Wrong
  • 3
    16
    Correct
    Wrong
  • 4
    8
    Correct
    Wrong
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Answer : 4. "8"
Explanation :

Answer: D) 8 Explanation: Here the given number analogy follows two patterns that, 6  18 --> 6 x 3 4 12 --> 4 x 3   OR 6 18 ----> 6x6/2 = 18 4 8 ----> 4x4/2 = 8   As 12 is not available in the options, 8 is correct answer.

Q: I go in hard. I come out soft. You blow me hard. What am I? 1554 0

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Answer :
Explanation :

Gum.

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