IIT JEE Practice Question and Answer

Q: Raghu earns 25% on an investment but loses 10% on another investment. If the ratio of the two investment is 3:5. What is the gain or loss on two investments taken together ? 1806 0

  • 1
    1.251 %
    Correct
    Wrong
  • 2
    3.125 %
    Correct
    Wrong
  • 3
    7.21 %
    Correct
    Wrong
  • 4
    9.451 %
    Correct
    Wrong
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Answer : 2. "3.125 %"
Explanation :

Answer: B) 3.125 % Explanation: Taking the 2 investments to be 3x and 5x respectivelyTotal income of Raghu = (3x) x 1.25 + (5x) x 0.9 = 8.25Therefore, Gain% = 0.25/8 x 100 = 3.125 %.

Q: Which animal adaptation happened before the others? 1806 0

  • 1
    Reproduction on land
    Correct
    Wrong
  • 2
    Development of a colelom
    Correct
    Wrong
  • 3
    Tissue development
    Correct
    Wrong
  • 4
    Deuterostome development
    Correct
    Wrong
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Answer : 3. "Tissue development"
Explanation :

Answer: C) Tissue development Explanation:

Q: The Indian Judge who has been re-elected to International Court of Justice(ICJ) 2017? 1806 0

  • 1
    Dalveer Bhandari
    Correct
    Wrong
  • 2
    S.N. Rao
    Correct
    Wrong
  • 3
    Arjun Singh
    Correct
    Wrong
  • 4
    R. S. Pathak
    Correct
    Wrong
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Answer : 1. "Dalveer Bhandari"
Explanation :

Answer: A) Dalveer Bhandari Explanation: India's nominee to International Court of Justice (ICJ) Dalveer Bhandari (70) was re-elected to fifth and the last seat of World court. Bhandari received 183-193 votes in United Nations General Assembly and secured all 15 votes in UN Security Council (UNSC). He was elected after Britain withdrew its candidate from the election. This is the first time since the ICJ was established in 1945 that there will be no British judge in ICJ. Bhandari is fourth Indian judge to be elected to ICJ after B.N. Rau, Nagendra Singh and RS Pathak.

Q: In which layer is the temperature the lowest? 1805 0

  • 1
    Troposphere
    Correct
    Wrong
  • 2
    Ionosphere
    Correct
    Wrong
  • 3
    Mesosphere
    Correct
    Wrong
  • 4
    Stratosphere
    Correct
    Wrong
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Answer : 3. "Mesosphere"
Explanation :

Answer: C) Mesosphere Explanation: The mesosphere lies above the stratosphere and extends to an altitude of about 85 km. This is layer is often referred to as the cold layer, as the lowest readings in the atmosphere are found here.   Temperature decreases with height, reaching a minimum average value of -90 ºC at the top of the layer.

Q: The profit earned by selling an article for Rs. 832 is equal to the loss incurred when the same article is sold for Rs. 448. What should be the sale price for making 50% profit ? 1805 0

  • 1
    Rs. 660
    Correct
    Wrong
  • 2
    Rs. 560
    Correct
    Wrong
  • 3
    Rs. 1060
    Correct
    Wrong
  • 4
    Rs. 960
    Correct
    Wrong
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Answer : 4. "Rs. 960"
Explanation :

Answer: D) Rs. 960 Explanation: Let C.P. = Rs. C. Then, 832 - C = C - 4482C = 1280 => C = 640Required S.P. = 150% of Rs. 640 = 150/100 x 640 = Rs. 960.

Q: If the average height of boys in a hall is 180 cm and that of girls is 150 cm. If the average height of the gathering is 165 cm, then find the number of girls present in the hall if the number of boys present in the hall are 78 ? 1805 0

  • 1
    56
    Correct
    Wrong
  • 2
    64
    Correct
    Wrong
  • 3
    87
    Correct
    Wrong
  • 4
    78
    Correct
    Wrong
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Answer : 4. "78"
Explanation :

Answer: D) 78 Explanation: Using Trial and error method, we get the number of girls in the hall = 78

Q: Which of the following can be a symptom of AIDS? 1804 0

  • 1
    Hair loss
    Correct
    Wrong
  • 2
    Severe weight gain
    Correct
    Wrong
  • 3
    Tiredness
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 3. "Tiredness"
Explanation :

Answer: C) Tiredness Explanation: From the aboe given options, only extreme and unexplained tiredness is the symptom of AIDS.   The other symptoms of AIDS include: recurring fever, thrush — a thick, whitish coating of the tongue or mouth that's caused by a yeast infection and sometimes accompanied by a sore throat, diarrhea that lasts more than a week, headaches, lightheadedness, and/or dizziness.

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Answer :
Explanation :

The Riddle itself has the Answers. What is a 4 letter word Yet is written in 3 letters Everything is written with 9 letters Then with 4 letters Rarely has 6 letters Never is written in 5 letters.

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