IIT JEE Practice Question and Answer

Q: Name the two main types of Fermentation? 2067 0

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Answer :
Explanation :

Fermentation is the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat.   The two most common types of fermentation are (1) alcoholic fermentation (and)  (2) lactic acid fermentation.   (1) Alcoholic fermentation : the type of fermentation in which ethyl alcohol is the main end product .This is very common in yeast (unicellular fungus) and also seen in some bacteria. Yeast cells release enzymes called zymase complex which bring about the fermentation. The reactions are similar to anaerobic respiration.   (2) Lactic acid fermentation : The type of fermentation in which lactic acid is the end product. It is carried out by some bacteria (e.g. lactic acid bacteria), and also by animals (muscle glycolysis in animals, under oxygen deficiency, results in the formation of lactic acid this is whay we experience in muscle cramps, or "Charley horse").

Q: How many Lok Sabha seats belong to Rajasthan? 2064 0

  • 1
    25
    Correct
    Wrong
  • 2
    17
    Correct
    Wrong
  • 3
    48
    Correct
    Wrong
  • 4
    2
    Correct
    Wrong
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Answer : 1. "25"
Explanation :

Answer: A) 25 Explanation: The maximum size of the Lok Sabha as outlined in the Constitution of India is 552 members made up of up to 530 members representing people of the states of India and up to 20 members representing people from the Union Territories on the basis of their population and 2 Anglo-Indians are nominated by President. The number of Parliamentary Seats for the States : Andhra Pradesh & Rajasthan - Each 25 Maharashtra - 48 Telangana - 17 Arunachal Pradesh, Bihar, Manipur, Meghalaya, Tripura - Each 02  Uttar Pradesh has the highest with - 80

Q: Two bus tickets from city K to L and three tickets from city K to M cost Rs. 77,  but three tickets from city K to L and two tickets from city K to M cost Rs. 73. What are the fares for cities L and M from K ? 2064 0

  • 1
    Rs. 13 and Rs. 17
    Correct
    Wrong
  • 2
    Rs. 17 and Rs. 19
    Correct
    Wrong
  • 3
    Rs. 23 and Rs. 17
    Correct
    Wrong
  • 4
    Rs. 13 and Rs. 19
    Correct
    Wrong
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Answer : 1. "Rs. 13 and Rs. 17"
Explanation :

Answer: A) Rs. 13 and Rs. 17 Explanation: If fares for cities L and M from K are x and y respectively, then 2x + 3y = 77 or 6x + 9y = 231...(1)3x + 2y = 73 or 6x + 4y = 146...(2) subtracting 2 from 1, we get 5y = 85 y = Rs. 17 => x = Rs. 13

Q: Which of the following sports is most popular worldwide? 2064 0

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

Answer: A) Football Explanation: Top five most popular games world wide are :   Game name              -      Estimated  fans     -    Popular Regions   1. Soccer / Football      -      3.5 Billion    -     Europe, Africa, Asia, America 2. Cricket                    -      2.5 Billion     -    Asia, Australia, UK 3. Basketball               -      2.2 Billion     -    US, Canada, China and Philippines 4. Field Hockey           -       2 Billion       -     Europe, Africa, Asia, Australia 5. Tennis                    -       1 Billion       -     Europe, Americas, and Asia.

Q: A woman’s voice is shriller than a man’s voice due to 2064 0

  • 1
    weak vocal chords
    Correct
    Wrong
  • 2
    lower frequency
    Correct
    Wrong
  • 3
    higher frequency
    Correct
    Wrong
  • 4
    higher amplitude
    Correct
    Wrong
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Answer : 3. "higher frequency"
Explanation :

Answer: C) higher frequency Explanation: As the frequency of sound is higher, women have shriller voices than men. The shrillness or pitch of a sound is determined by its frequency. The higher the pitch shriller the voice. As the sounds produced by vocal cords of women are higher than men so women have shriller voices than men. Because their vocal cord is of smaller size. As their vocal cord is more stretched than men's.

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Answer : 3. "Rs. 10664.15"
Explanation :

Answer: C) Rs. 10664.15 Explanation: Profit received by Chinna as working partner = 14.5% of Rs. 19600 = 14.5x19600/100 = Rs. 2842 Balance in profit = 19600-2842 = Rs. 16758 Ratio of investment of Chinna & Munna = 80,000 : 1,40,000 = 4 : 7 Hence share of Chinna in investment = 4x16758/100 = Rs. 6093.85 Therefore, Share of Munna = 19600 - 2842 - 6093.85 = Rs. 10664.15

Q: Where is it legal to tie up your boat? 2062 0

  • 1
    to a lighted buoy
    Correct
    Wrong
  • 2
    to a mooring buoy
    Correct
    Wrong
  • 3
    to a non-lateral marker
    Correct
    Wrong
  • 4
    to a safe water marker
    Correct
    Wrong
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Answer : 2. "to a mooring buoy"
Explanation :

Answer: B) to a mooring buoy Explanation: Mooring buoy are white with a blue horizontal band. They usually are placed in marinas and other areas where boats are allowed to anchor. These are the only buoys you may tie up to legally.

Q: Which day is observed as Rashtriya Ekta Diwas every year in India? 2062 0

  • 1
    31st July
    Correct
    Wrong
  • 2
    31st March
    Correct
    Wrong
  • 3
    31st January
    Correct
    Wrong
  • 4
    31st October
    Correct
    Wrong
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Answer : 4. "31st October"
Explanation :

Answer: D) 31st October Explanation:

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