IIT JEE Practice Question and Answer

Q: I am the mother of three children. Can you find my Age ? 2081 0

  • 1
    27
    Correct
    Wrong
  • 2
    36
    Correct
    Wrong
  • 3
    24
    Correct
    Wrong
  • 4
    32
    Correct
    Wrong
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Answer : 1. "27"
Explanation :

Answer: A) 27 Explanation: From the given conditions , only A = 27 yrs satisfies.

Q: If the given two numbers are respectively 7% and 28% of a third number, then what percentage is the first of the second ? 2081 0

  • 1
    24%
    Correct
    Wrong
  • 2
    29%
    Correct
    Wrong
  • 3
    34%
    Correct
    Wrong
  • 4
    25%
    Correct
    Wrong
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Answer : 4. "25%"
Explanation :

Answer: D) 25% Explanation: Here, k = 7 and l = 28Therefore, first number = klx100 % of second number = 7/28 x 100% of second number = 25% of second number.

Q: The Ghodazari Wildlife Sanctuary (GWS) will come up in which state? 2079 0

  • 1
    Maharashtra
    Correct
    Wrong
  • 2
    Karnataka
    Correct
    Wrong
  • 3
    Tamil Nadu
    Correct
    Wrong
  • 4
    Odisha
    Correct
    Wrong
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Answer : 1. "Maharashtra"
Explanation :

Answer: A) Maharashtra Explanation: The Maharashtra Government has recently approved Ghodazari Wildlife Sanctuary in Chandrapur district as a new wildlife sanctuary in the state.

Q: A,B,C together can do a piece of work in 10 days.All the three started workingat it together and after 4 days,A left.Then,B and C together completed the work in 10 more days.In how many days can complete a work alone ? 2078 0

  • 1
    25
    Correct
    Wrong
  • 2
    24
    Correct
    Wrong
  • 3
    23
    Correct
    Wrong
  • 4
    21
    Correct
    Wrong
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Answer : 1. "25"
Explanation :

Answer: A) 25 Explanation: (A+B+C) do 1 work in 10 days. So (A+B+C)'s 1 day work=1/10 and as they work together for 4 days so workdone by them in 4 days=4/10=2/5 Remaining work=1-2/5=3/5   (B+C) take 10 more days to complete 3/5 work. So( B+C)'s 1 day work=3/50 Now A'S 1 day work=(A+B+C)'s 1 day work - (B+C)'s 1 day work=1/10-3/50=1/25 A does 1/25 work in in 1 day Therefore 1 work in 25 days.

Q: What determines the value of an item? 2077 0

  • 1
    the capital required to build the factory
    Correct
    Wrong
  • 2
    the unlimited wants of the consumers
    Correct
    Wrong
  • 3
    the resources consumed in production
    Correct
    Wrong
  • 4
    the amount of goods that are produced
    Correct
    Wrong
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Answer : 1. "the capital required to build the factory"
Explanation :

Answer: A) the capital required to build the factory Explanation: Value is the monetary worth of something, in this case, it is an item. In option A, since it is talking about capital which is measured in monetary terms. The value of an item is determined by its quality and its age. Often antiques with good quality are sold in the market with a high value and are sometimes auctioned.

Q: Milk is an example of a 2076 0

  • 1
    Emulsion
    Correct
    Wrong
  • 2
    Solution
    Correct
    Wrong
  • 3
    Gel
    Correct
    Wrong
  • 4
    Suspension
    Correct
    Wrong
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Answer : 1. "Emulsion"
Explanation :

Answer: A) Emulsion Explanation: Milk is an emulsion of oil in water (o/w). Emulsion: A suspension of droplets of one liquid in another. Constituents of milk : The principal constituents of milk are water, fat, proteins, lactose (milk sugar) and minerals (salts). Milk also contains trace amounts of other substances such as pigments, enzymes, vitamins, phospholipids (substances with fatlike properties), and gases.

Q: The first effective vaccine against polio was prepared by ? 2075 0

  • 1
    Robert Edwards
    Correct
    Wrong
  • 2
    James Simpson
    Correct
    Wrong
  • 3
    H Gibbon
    Correct
    Wrong
  • 4
    Jonas E Salk
    Correct
    Wrong
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Answer : 4. "Jonas E Salk"
Explanation :

Answer: D) Jonas E Salk Explanation:

Q: In a class, seven students are standing in a row. Q is standing left to R but right to P. O is standing right to N and left to P. Similarly, S is standing right to R and left to T. Find out who is standing in the middle ? 2074 0

  • 1
    Q
    Correct
    Wrong
  • 2
    R
    Correct
    Wrong
  • 3
    P
    Correct
    Wrong
  • 4
    S
    Correct
    Wrong
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Answer : 1. "Q"
Explanation :

Answer: A) Q Explanation: As from the given conditions;Order is N O P Q R S THere the student standing in the middle is 'Q'.

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