IIT JEE Practice Question and Answer

Q: The ratio of two positive numbers is 3 : 5 and the average of the number is 48. What is the product of numbers? 2754 1

  • 1
    3365
    Correct
    Wrong
  • 2
    2160
    Correct
    Wrong
  • 3
    1854
    Correct
    Wrong
  • 4
    1632
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "2160"
Explanation :

Answer: B) 2160 Explanation: Let the number be 3p and 5p ATQ, 8p = 2 x 48 p = 96/8 p = 12   The numbers are 36 and 60.   Hence, the product of the numbers = 36 x 60 = 2160.

Q: Which of these is not a simple machine? 2969 1

  • 1
    a pair of scissors
    Correct
    Wrong
  • 2
    a lever
    Correct
    Wrong
  • 3
    a ramp
    Correct
    Wrong
  • 4
    the pulley
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "a pair of scissors"
Explanation :

Answer: A) a pair of scissors Explanation: Any of the basic mechanical devices for applying a force are called simple machines. There are 6 basic simple machines; the lever, the wheel and axle, the inclined plane, the wedge, the pulley, and the screw. Several of these simple machines are related to each other. But, each has a specific purpose in the world of doing work.

Q: Regarding the Magna Carta, which statement is false? 11105 0

  • 1
    The document assured all English citizens freedom of speech.
    Correct
    Wrong
  • 2
    The document required trial by a jury of one's peers.
    Correct
    Wrong
  • 3
    The meeting of the English Barons and King John occurred at Runnymede.
    Correct
    Wrong
  • 4
    King John was forced to sign the document.
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "The document required trial by a jury of one's peers."
Explanation :

Answer: B) The document required trial by a jury of one's peers. Explanation:

Q: Complete the next number in the given number series? 21 56 102 160 231 316 2470 0

  • 1
    416
    Correct
    Wrong
  • 2
    415
    Correct
    Wrong
  • 3
    414
    Correct
    Wrong
  • 4
    413
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "416"
Explanation :

Answer: A) 416 Explanation: The given number series is  21 56 102 160 231 316   21      56       102        160      231       316         416    +35    +46       +58       +71      +85       +100         +11      +12       +13      +14      +15   Hence, the next number in the given number series is 316 + 100 = 416.

Q: Which best describes Genes? 2304 0

  • 1
    long, double chains of nucleic acids.
    Correct
    Wrong
  • 2
    long, single chains of amino acids.
    Correct
    Wrong
  • 3
    long, single chains of nucleic acids.
    Correct
    Wrong
  • 4
    long, double chains of amino acids.
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "long, double chains of nucleic acids."
Explanation :

Answer: A) long, double chains of nucleic acids. Explanation: Gene is a segment of chromosomal DNA or a sequence of DNA or RNA that codes for a molecule that has a function. It is the basic physical and functional unit of heredity.   As genes are made up of DNA it impies that they are long, double chains of nucleic acids as DNA is made of nucleic acids.

Q: Simplify the following equation 55.55 + 155 + 15.55 + 0.5 + 0.05 = ? 2506 0

  • 1
    226.65
    Correct
    Wrong
  • 2
    196.55
    Correct
    Wrong
  • 3
    202.35
    Correct
    Wrong
  • 4
    216.66
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "226.65"
Explanation :

Answer: A) 226.65 Explanation: 55.55 + 155 + 15.55 + 0.5 + 0.05 = ?    55.55 155.00  15.55    0.5    0.05 _______ 226.65 _______   Hence, the value of the given equation 55.55 + 155 + 15.55 + 0.5 + 0.05 = 226.65.

Q: The shadow zone exists because 2264 0

  • Show AnswerHide Answer
  • Workspace

Answer :
Explanation :

The shadow zone is the area of the earth from angular distances of 104 to 140 degrees from a given earthquake that does not receive any direct P waves. The shadow zone results from S waves being stopped entirely by the liquid core and P waves being bent (refracted) by the liquid core. There are two types of Shadow zones: one for P waves and one for S waves.   P wave shadows between 104-140 degree, both sides; S wave shadow from 105 of one side to 105 of the other.

Q: Tennis rackets and ballpoint pens are 2555 0

  • 1
    complementary goods
    Correct
    Wrong
  • 2
    independent goods
    Correct
    Wrong
  • 3
    inferior goods
    Correct
    Wrong
  • 4
    substitute goods
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "independent goods"
Explanation :

Answer: B) independent goods Explanation: Tennis rackets and ballpoint pens are two independent goods. Since, one doesn't depend on the other.

      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