IIT JEE Practice Question and Answer

Q: Which vehicle is spelled the same forwards and backwards? 2003 0

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Answer :
Explanation :

Racecar and Civic are the two vehicles which spelled the same forwards an backwards.

Q: What role does photosynthesis play in the carbon cycle? 940 0

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Answer :
Explanation :

In the process of photosynthesis, plants need the sun's energy, water to make food for themselves in the form of ATP ( adenosine triphosphate ) , which is packages of energy. Carbon : coming into the plants ( or algae ) along with water make those ATP into a bigger molecule, which is know as glucose. Formula: 6 CO2 + 6 H2O + Suns Energy -> glucose + oxygen Photosynthesis has an affect on the carbon cycle because it reduces the amount of CO2 in the air and redirects it into sugars which feeds animals as well as humans.   Hence, Photosynthesis removes CO2 from the atmosphere and replaces it with O2.

Q: 6 B in an O? 2650 0

  • 1
    6 books in an order
    Correct
    Wrong
  • 2
    6 balls in an over
    Correct
    Wrong
  • 3
    6 bats in an odd
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 2. "6 balls in an over"
Explanation :

Answer: B) 6 balls in an over Explanation: 6 b in an o means 6 balls in an over in cricket.

Q: Is yeast a fungus or bacteria? 1704 0

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Answer :
Explanation :

Yeast belongs to members of the Kingdom Fungi.   Yeast are single-celled microorganisms that are classified, along with molds and mushrooms in Fungi family.    Yeasts are evolutionally diverse and are therefore classified into two separate phyla, Ascomycota or sac fungi and Basidiomycota or higher fungi, that together form the subkingdom Dikarya.

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Answer : 2. "1/6"
Explanation :

Answer: B) 1/6 Explanation: Total work is given by L.C.M of 72, 48, 36 Total work = 144 units Efficieny of A = 144/72 = 2 units/day Efficieny of B = 144/48 = 3 units/day Efficieny of C = 144/36 = 4 units/day   According to the given data, 2 x p/2 + 3 x p/2 + 2 x (p+6)/3 + 3 x (p+6)/3 + 4 x (p+6)/3 = 144 x (100 - 125/3) x 1/100 3p + 4.5p + 2p + 3p + 4p = 84 x 3 - 54 p = 198/16.5 p = 12 days.   Now, efficency of D = (144 x 125/3 x 1/100)/10 = 6 unit/day (C+D) in p days = (4 + 6) x 12 = 120 unit Remained part of work = (144-120)/144 = 1/6.

Q: Find the next number in the given number series? 50, 51, 47, 56, 40, ? 3382 0

  • 1
    58
    Correct
    Wrong
  • 2
    65
    Correct
    Wrong
  • 3
    76
    Correct
    Wrong
  • 4
    81
    Correct
    Wrong
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Answer : 2. "65"
Explanation :

Answer: B) 65 Explanation: The given number series is 50, 51, 47, 56, 40, ?   5050 + 12 = 5151 - 22 = 4747 + 32 = 5656 - 42 = 4040 + 52 = 65   Hence, the next number in the given number series is 65.

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Answer :
Explanation :

We know a proverb that An apple a day keeps the doctor away. To keep the doctor away from her, he gave seven apples, each apple a day.

Q: Who has won the orange cap for scoring the most runs in IPL 2018? 1549 0

  • 1
    Rishabh Pant (Delhi Daredevils)
    Correct
    Wrong
  • 2
    Virat Kohli (Royal Challengers Bangalore)
    Correct
    Wrong
  • 3
    Ambati Rayudu (Chennai Super Kings)
    Correct
    Wrong
  • 4
    Kane Williamson (Sunrisers Hyderabad)
    Correct
    Wrong
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Answer : 4. "Kane Williamson (Sunrisers Hyderabad)"
Explanation :

Answer: D) Kane Williamson (Sunrisers Hyderabad) Explanation: Kane Williamson, the captain of Sunrisers Hyderabad team has won orange cup for scoring the most runs in IPL 2018. The orange cap is presented annually in the Indian Premier League to the highest run scorer.

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