IIT JEE Practice Question and Answer

Q: 6 B in an O? 2628 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
  • Show AnswerHide Answer
  • Workspace

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: I have four fingers and a thumb, but not alive. Who am I? 2627 0

  • Show AnswerHide Answer
  • Workspace

Answer :
Explanation :

A glove. It has 5 fingers as we have but not alive.

Q: If a number 72k23l is divisible by 88. Then find value of k and l ? 2626 0

  • 1
    k=8 & l=2
    Correct
    Wrong
  • 2
    k=7 & l=2
    Correct
    Wrong
  • 3
    k=8 & l=3
    Correct
    Wrong
  • 4
    k=7 & l=1
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "k=7 & l=2"
Explanation :

Answer: B) k=7 & l=2 Explanation: If a number to be divisile by 88, it should be divisible by both "8" and "11" Check for '8' :For a number to be divisible by "8", the last 3-digit should be divisible by "8"Here 72x23y --> last 3-digit is '23y'So y=2 [ (i.e) 232 is absolutely divisible by "8"] Chech for '11' :For a number to be divisible by "11" , sum of odd digits - sum of even digits should be divisible by "11"(7 + x + 3) - (2 + 2 + y)(7 + x + 3) - (2 + 2 + 2)(10 + x) - 6 should be divisible by "11"for x = 7=> 17 - 6 = 11 [ which is absolutely divisible by "11"] So x = 7 , y= 2.

Q: Who invented Dynamite? 2625 0

  • 1
    Graham Bell
    Correct
    Wrong
  • 2
    Nikola Tesla
    Correct
    Wrong
  • 3
    Alfred Nobel
    Correct
    Wrong
  • 4
    Louis Pateur
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "Alfred Nobel"
Explanation :

Answer: C) Alfred Nobel Explanation: Alfred Bernhard Nobel was a Swedish chemist, engineer, inventor, businessman, and philanthropist. Known for inventing Dynamite, Nobel also owned Bofors, which he had redirected from its previous role as primarily an iron and steel producer to a major manufacturer of cannon and other armaments.

Q: Dry ice is nothing but 2620 0

  • 1
    Solid carbon dioxide
    Correct
    Wrong
  • 2
    Baking soda
    Correct
    Wrong
  • 3
    Gaseous carbon dioxide
    Correct
    Wrong
  • 4
    Carbon monoxide
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "Solid carbon dioxide"
Explanation :

Answer: A) Solid carbon dioxide Explanation:   Dry ice is solid form of carbon dioxide, used as a cooling agent.   It lower temperature than that of water ice and not leave any residue.

Q: How many lines of symmetry does a Pentagon have? 2618 0

  • 1
    4
    Correct
    Wrong
  • 2
    5
    Correct
    Wrong
  • 3
    6
    Correct
    Wrong
  • 4
    0
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "5"
Explanation :

Answer: B) 5 Explanation: A regular Pentagon have 5 sides and 5 lines of symmetry.  The number of lines of symmetry in a regular polygon is equal to the number of sides.

Q: Oxygen in our blood is transported by a protein named 2618 0

  • 1
    keratin
    Correct
    Wrong
  • 2
    myoglobi
    Correct
    Wrong
  • 3
    collagen
    Correct
    Wrong
  • 4
    haemoglobin
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "haemoglobin"
Explanation :

Answer: D) haemoglobin Explanation: Oxygen in our blood is transported by a protein named Haemoglobin.

Q: 40% of 265 + 35% of 180 = 50% of ? 2616 0

  • 1
    383
    Correct
    Wrong
  • 2
    338
    Correct
    Wrong
  • 3
    84.5
    Correct
    Wrong
  • 4
    253.5
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "338"
Explanation :

Answer: B) 338 Explanation: We know that 40% = 25   40% of 265 + 35% of 180 = 50% ?   25 x 265 + 35% of 180 = 50% ?   We know that (35% of 180 = 180% of 35) & 180% = 95   25 x 265 + 95 x 35 = 50% ?   106 + 63 = 50% ?   ?= 2 x 169 = 338.

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully