IIT JEE Practice Question and Answer

Q: Express 6.72 % in ratio ? 2228 0

  • 1
    65 : 124
    Correct
    Wrong
  • 2
    42 : 625
    Correct
    Wrong
  • 3
    21 : 125
    Correct
    Wrong
  • 4
    37 : 442
    Correct
    Wrong
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Answer : 2. "42 : 625"
Explanation :

Answer: B) 42 : 625 Explanation: 6.72/100 = 672/10000 = 42/625

Q: The average age of a couple is 24 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child ? 2227 0

  • 1
    2 yrs
    Correct
    Wrong
  • 2
    4 yrs
    Correct
    Wrong
  • 3
    3 yrs
    Correct
    Wrong
  • 4
    5 yrs
    Correct
    Wrong
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Answer : 1. "2 yrs"
Explanation :

Answer: A) 2 yrs Explanation: 29 x 2 = 5820 x 3 = 60         -----------               2 years Therefore, the age of child is 2 years.

Q: The sale price of an article including the sales tax is Rs. 616. The rate of sales tax is 10%. If the shopkeeper has made a profit of 12%, then the cost price of the article is : 2227 0

  • 1
    Rs. 560
    Correct
    Wrong
  • 2
    Rs. 530
    Correct
    Wrong
  • 3
    Rs. 500
    Correct
    Wrong
  • 4
    Rs. 514
    Correct
    Wrong
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Answer : 3. "Rs. 500"
Explanation :

Answer: C) Rs. 500 Explanation: 110% of S.P. = Rs. 616 S.P. = (616 x 100)/110 = Rs. 560 C.P = (110 x 560)/112 = Rs. 500

Q: A calorie is another term for carbohydrate. 2226 0

  • 1
    TRUE
    Correct
    Wrong
  • 2
    FALSE
    Correct
    Wrong
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Answer : 2. "FALSE"
Explanation :

Answer: B) FALSE Explanation: The given statement that a calorie is another term for carbohydrate is False.   Carbohydrates are one of the main types of nutrients, and are most important source of energy.   Where as Calorie is a measurement of how much heat energy is generated by the body processing food.   Your digestive system changes carbohydrates into glucose(blood sugar). Your body uses this sugar for energy.

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Answer :
Explanation :

It is said by Lord Polonius. It means do not lend or borrow money from a friend, because if you do so, you will lose both your friend and your money. If you lend, he will avoid paying back, and if you borrow you will fall out of your savings, as you turn into a spendthrift, and face humiliation.

Q: Which of the following is not transferred by alveoli? 2224 0

  • 1
    Gases
    Correct
    Wrong
  • 2
    Oxygen
    Correct
    Wrong
  • 3
    Blood
    Correct
    Wrong
  • 4
    Carbondioxide
    Correct
    Wrong
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Answer : 3. "Blood"
Explanation :

Answer: C) Blood Explanation: The main function of the pulmonary alveoli is to perform the transfer and exchange of gases. Here in the given options, blood is only one which is not gas.   Hence, blood is not transferred by alveoli.

Q: Which statement fits the Frontier Ethic? 2223 1

  • 1
    Recycle plastic
    Correct
    Wrong
  • 2
    Help those in need
    Correct
    Wrong
  • 3
    He who has more toys wins
    Correct
    Wrong
  • 4
    Walk lightly on Earth
    Correct
    Wrong
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Answer : 3. "He who has more toys wins"
Explanation :

Answer: C) He who has more toys wins Explanation: Frontier Ethic is Spending Earth's assets at the cost of losing resource capital. A frontier ethic assumes that the earth has an unlimited supply of resources. It is the notion of disregarding the Earth for the benefit or gain of man. If resources run out in one area, more can be found elsewhere or alternatively human ingenuity will find substitutes. This attitude sees humans as masters who manage the planet. It is completely Anthropocentric.

Q: Three friends Rudra, Siva and Anvesh start to run around a circular stadium. They complete a revolution in 24, 36 and 30 seconds respectively. After how many minutes will they meet at the starting point ? 2223 0

  • 1
    60
    Correct
    Wrong
  • 2
    120
    Correct
    Wrong
  • 3
    360
    Correct
    Wrong
  • 4
    6
    Correct
    Wrong
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Answer : 4. "6"
Explanation :

Answer: D) 6 Explanation: For this we have to find the LCM of 24, 36 and 30 LCM of 24, 36 and 30 = 360 sec 360/60 min = 6 minutes.

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