IIT JEE Practice Question and Answer

Q: Two candidates fought in a municipality election. One of them got 54% of the total votes pooled and won by 1080 votes. What was the total number of votes polled ? 1643 0

  • 1
    12000
    Correct
    Wrong
  • 2
    13500
    Correct
    Wrong
  • 3
    15400
    Correct
    Wrong
  • 4
    11000
    Correct
    Wrong
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Answer : 2. "13500"
Explanation :

Answer: B) 13500 Explanation: Given in municipality election 54% votes have won by 1080   Let the total number of votes be x.    54x100 - 46x100 = 1080   8x = 108000   x = 13,500   Therefore, total number of votes = 13,500.

Q: A merchant commences with a certain capital and gains annually at the rate of 30 per cent. At the end of 2 years he has worth Rs 10,000. What was the original capital? 1643 0

  • 1
    Rs. 4987
    Correct
    Wrong
  • 2
    Rs. 5148
    Correct
    Wrong
  • 3
    Rs. 5917
    Correct
    Wrong
  • 4
    Rs. 6254
    Correct
    Wrong
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Answer : 3. "Rs. 5917"
Explanation :

Answer: C) Rs. 5917 Explanation: Let the Original capital amount be Rs. P Given after 2 years the amount is Rs. 10000 Rate of interest = 30% According to the question, P x 130100 x 130100 = 10000=> P = 1000000169 = 5917 Therefore, the capital amount P = Rs. 5917

Q: A town has a population of 4000 requires 140 liters of water per head. It has a tank measuring 18m x 12m x 8m. The water of this tank will suffice for ____ days? 1643 0

  • 1
    3
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    5
    Correct
    Wrong
  • 4
    2
    Correct
    Wrong
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Answer : 1. "3"
Explanation :

Answer: A) 3 Explanation: Water required = 4000 x 140 = 560000 lit = 560 cu.m (1 cu.m = 1000 lit) Volume of tank = 18 x 12 x 8 = 1728 cu.m Water of this tank will suffice for = 1728/560 = 3 days.

Q: What is the name of a 12-year-old Indian-origin boy who has been crowned as the UK's 'child genius' in a popular television quiz competition ? 1642 0

  • 1
    Rahul Doshi
    Correct
    Wrong
  • 2
    Anshul Verma
    Correct
    Wrong
  • 3
    Ravi Sharma
    Correct
    Wrong
  • 4
    Ronan Kumar
    Correct
    Wrong
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Answer : 1. "Rahul Doshi"
Explanation :

Answer: A) Rahul Doshi Explanation:

Q: A 260 m long train running at the speed of 120 km/hr crosses another train running in opposite direction at the speed of 80 km/hr in 9 sec. What is the length of the other train  ? 1642 0

  • 1
    240 mts
    Correct
    Wrong
  • 2
    270 mts
    Correct
    Wrong
  • 3
    260 mts
    Correct
    Wrong
  • 4
    250 mts
    Correct
    Wrong
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Answer : 1. "240 mts"
Explanation :

Answer: A) 240 mts Explanation: Relative speed = 120 + 80 = 200 km/hr.= 200 x 5/18 = 500/9 m/sec. Let the length of the other train be L mts.Then, (L + 260)/9 = 500/9 => L = 240 mts.

Q: What is meant by demography? 1642 0

  • 1
    The well being of populations
    Correct
    Wrong
  • 2
    Growth of population
    Correct
    Wrong
  • 3
    Birth and death of population
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 4. "All the above"
Explanation :

Answer: D) All the above Explanation: The study of statistics such as births, deaths, income, or the incidence of disease, which illustrate the changing structure of human populations.   In brief, Study of both quantitative and qualitative aspects of human population. 1. Quantitative aspects include composition, density, distribution, growth, movement, size, and structure of the population. 2. Qualitative aspects are the sociological factors such as education quality, crime, diet, development, nutrition, wealth and well being.

Q: The inherited traits of an organism are controlled by 1642 0

  • 1
    DNA
    Correct
    Wrong
  • 2
    Enzymes
    Correct
    Wrong
  • 3
    Nucleotides
    Correct
    Wrong
  • 4
    RNA
    Correct
    Wrong
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Answer : 1. "DNA"
Explanation :

Answer: A) DNA Explanation: The inherited traits of an organism are controlled by DNA molecules.   The traits an organism displays are ultimately determined by the genes it inherited from its parents, in other words by its genotype. Animals have two copies of all their chromosomes, one from each parent.

Q: Which State's chief minister has announced five lakh rupees health-cum-life insurance scheme for farmers in the state? 1642 0

  • 1
    Telangana
    Correct
    Wrong
  • 2
    Uttar Pradesh
    Correct
    Wrong
  • 3
    Gujarat
    Correct
    Wrong
  • 4
    Andhra Pradesh
    Correct
    Wrong
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Answer : 1. "Telangana"
Explanation :

Answer: A) Telangana Explanation:

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