IIT JEE Practice Question and Answer

Q: Which organisation among the following gave a slogan "Hyderabad for Hyderabadies" ? 3312 0

  • 1
    Ittehadul Musleemeen
    Correct
    Wrong
  • 2
    Jameeyat Riya Mame Nizam
    Correct
    Wrong
  • 3
    Deccan-e-Shabbir
    Correct
    Wrong
  • 4
    Jamia Islamia
    Correct
    Wrong
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Answer : 2. "Jameeyat Riya Mame Nizam"
Explanation :

Answer: B) Jameeyat Riya Mame Nizam Explanation:

Q: Blotting paper absorbs ink due to 3312 0

  • 1
    Capillary action phenomenon
    Correct
    Wrong
  • 2
    Diffusion of ink through the blotting
    Correct
    Wrong
  • 3
    Siphon action
    Correct
    Wrong
  • 4
    Viscosity of ink
    Correct
    Wrong
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Answer : 1. "Capillary action phenomenon"
Explanation :

Answer: A) Capillary action phenomenon Explanation: Blotting paper absorbs ink by the process of capillary action. The capillary action is based on the property of surface tension of liquid.   All unsized paper will absorb water. Blotting paper is not sized and made bulkier to provide capillary action for faster absorption of liquid.   Blotting paper has also been sold as a cosmetic to aid in the removal of skin oils and makeup.

Q: A milkman claims to sell milk at its cost price, still, he is making a profit of 30% since he has mixed some amount of water in the milk. What is the % of milk in the mixture? 3291 0

  • 1
    71.02%
    Correct
    Wrong
  • 2
    76.92%
    Correct
    Wrong
  • 3
    63.22%
    Correct
    Wrong
  • 4
    86.42%
    Correct
    Wrong
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Answer : 2. "76.92%"
Explanation :

Answer: B) 76.92% Explanation: Let the milk he bought is 1000 ml Let C.P of 1000 ml is Rs. 100 Here let he is mixing K ml of water He is getting 30% profit => Now, the selling price is also Rs. 100 for 1000 ml => 100 : K% = 100 : 30 10 : 3 is ratio of milk to water => Percentage of milk = 10 x 100/13 = 1000/13 = 76.92%

Q: Time taken by P alone to finish a work is 50% more than the time taken by P and Q together. Q is thrice as efficient as R. If Q and R together can complete the work in 22.5 days, then how many days will P alone take to complete the work ? 3264 0

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

Answer: C) 15 days Explanation: We know that Time is inversely proportional to Efficiency Here given time ratio of P & P+Q as P/P+Q = 150/100 = 3:2 Efficiency ratio of P & Q as P:Q = 2:1 ....(1) Given Efficiency ratio of Q & R as Q:R = 3:1 ....(2) From (1) & (2), we get P:Q:R = 6:3:1 P alone can finish the work in 22.5(3+1)/6 = 15 days.

Q: Bureaucracy literally means a system of government by 3258 0

  • 1
    Elected representative
    Correct
    Wrong
  • 2
    Officials
    Correct
    Wrong
  • 3
    Group of landlords
    Correct
    Wrong
  • 4
    Nominated representative
    Correct
    Wrong
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Answer : 2. "Officials"
Explanation :

Answer: B) Officials Explanation: A bureaucracy is a way of administratively organizing large numbers of people who need to work together. The term bureaucracy literally means "rule by desks or offices". Organizations in the public and private sector, including universities and governments, rely on bureaucracies to function.

Q: Which observation proves that a cell is a eukaryote? 3253 0

  • 1
    It contains DNA
    Correct
    Wrong
  • 2
    It contains ribosomes
    Correct
    Wrong
  • 3
    It has a cell membrane
    Correct
    Wrong
  • 4
    It has DNA inside a nucleus
    Correct
    Wrong
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Answer : 4. "It has DNA inside a nucleus"
Explanation :

Answer: D) It has DNA inside a nucleus Explanation: Eukaryotic cells all have a nucleus. Eukaryotes are organisms that are multicellular, although there are some examples of single cellular eukaryotes. So eukaryotic cells can be either cell with a nucleus or a eukaryotic organism's cell. The most important feature to judge whether it has nucleus membrane. And for other choices, they are the common features of eukaryote and prokaryote.

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Answer : 2. "30 min"
Explanation :

Answer: B) 30 min Explanation: Distance travelled by Ramu = 45 x 4 = 180 km Somu travelled the same distance in 6 hours. His speed = 180/6 = 30 km/hr Hence in the conditional case, Ramu's speed = 45 - 9 = 36 km/hr and Somu's speed = 30 + 10 = 40km/hr. Therefore travel time of Ramu and Somu would be 5 hours and 4.5 hours respectively. Hence difference in the time taken = 0.5 hours = 30 minutes.

Q: If a trader sold two cars each at Rs. 325475 and gains 12% on the first and loses 12% on the second, then his profit or loss percent on the whole is ? 3231 0

  • 1
    1.44% loss
    Correct
    Wrong
  • 2
    14.4% loss
    Correct
    Wrong
  • 3
    0%
    Correct
    Wrong
  • 4
    14.4% profit
    Correct
    Wrong
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Answer : 1. "1.44% loss"
Explanation :

Answer: A) 1.44% loss Explanation: SP of each car is Rs. 325475, he gains 12% on first car and losses 12% on second car.In this case, there will be loss and percentage of loss is given by = [(profit%)(loss%)]/100 = (12)(12)/100 % = 1.44%

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