IIT JEE Practice Question and Answer

Q: The law of demand states that other things equal 1532 0

  • 1
    as the price increases, the quantity demanded will decrease.
    Correct
    Wrong
  • 2
    as the price increases, the quantity demanded will increase.
    Correct
    Wrong
  • 3
    as the price decreases, the demand curve will shift to the right.
    Correct
    Wrong
  • 4
    as the price increases, the demand will decrease.
    Correct
    Wrong
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Answer : 1. "as the price increases, the quantity demanded will decrease."
Explanation :

Answer: A) as the price increases, the quantity demanded will decrease. Explanation:

Q: Which would provide the body with the most energy? 2477 0

  • 1
    Breaking a single carbon bond
    Correct
    Wrong
  • 2
    Forming bonds between two amino acids
    Correct
    Wrong
  • 3
    Creating bonds to form a carbohydrate
    Correct
    Wrong
  • 4
    Breaking the bonds in a monosaccharide
    Correct
    Wrong
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Answer : 4. "Breaking the bonds in a monosaccharide"
Explanation :

Answer: D) Breaking the bonds in a monosaccharide Explanation:

Q: In which layer is the pressure the highest? 1527 0

  • 1
    Ionosphere
    Correct
    Wrong
  • 2
    Stratosphere
    Correct
    Wrong
  • 3
    Troposphere
    Correct
    Wrong
  • 4
    Inner core
    Correct
    Wrong
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Answer : 4. "Inner core"
Explanation :

Answer: D) Inner core Explanation: "Pressure" is the ratio of mass to area. So, for any given area, the one with more mass pressing on it will experience a higher pressure.   As you go more deeply into the atmosphere OR earth itself, you are putting more and more mass over you. For the same unit area therefore, the pressure, (mass/area) increases.   Hence, the lowest layer will always have the highest pressure i.e, inner core.

Q: Mohan spends 23% of an amount of money on an insurance policy, 33% on food, 19% on children’s education and 16% on recreation. He deposits the remaining amount of Rs. 504 in bank. How much amount does he spend on food and insurance policy together? 1427 0

  • 1
    Rs. 2326
    Correct
    Wrong
  • 2
    Rs. 5876
    Correct
    Wrong
  • 3
    Rs. 1741
    Correct
    Wrong
  • 4
    Rs. 3136
    Correct
    Wrong
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Answer : 4. "Rs. 3136"
Explanation :

Answer: D) Rs. 3136 Explanation: Let total amount = Rs. P Total expenditure = (23 + 33 + 19 + 16)% of P = 91%ofP Remaining money = (100 - 91)% of P = 9% of P But given in the question that, 9% of P = 504 9p/100 = 504 => P = 50400/9 => P = Rs. 5600   Required money spent on Food & Insurance = 23 + 33 % = 56% of 5600 = 56 x 5600/100 = 56 x 56 = Rs. 3136

Q: One year ago the ratio between Maneela’s and Shanthi’s salary was 3 : 4. The ratios of their individual salaries between last year’s and this year’s salaries are 4 : 5 and 2 : 3 respectively. At present the total of their salary is Rs. 4160. The salary of Maneela, now is? 6010 0

  • 1
    Rs. 1600
    Correct
    Wrong
  • 2
    Rs. 1700
    Correct
    Wrong
  • 3
    Rs. 1800
    Correct
    Wrong
  • 4
    Rs. 1900
    Correct
    Wrong
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Answer : 1. "Rs. 1600"
Explanation :

Answer: A) Rs. 1600 Explanation: Let the salaries of Maneela and Shanthi one year before be M1, S1 & now be M2, S2 respectively. Then, from the given data, M1/S1 = 3/4  .....(1) M1/M2 = 4/5 .....(2) S1/S2 = 2/3  .....(3) and M2 + S2 = 4160  .....(4)   Solving all these eqtns, we get M2 = Rs. 1600.

Q: Find the odd man out in the following number series? 71, 88, 113, 150, 203, 277 1900 0

  • 1
    277
    Correct
    Wrong
  • 2
    203
    Correct
    Wrong
  • 3
    150
    Correct
    Wrong
  • 4
    113
    Correct
    Wrong
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Answer : 1. "277"
Explanation :

Answer: A) 277 Explanation: The given number series is    71      88       113       150       203          277    +17    +25       +37      +53        +74         +8      +12        +16       +21             +4          +4         +5   The series should be  71  88  112   150    203   276 i.e, the differences of the difference should be +4.   Hence, the odd man in the given series is 277.

Q: Hormones are chemicals secreted and regulated by the endocrine system. 1356 0

  • 1
    TRUE
    Correct
    Wrong
  • 2
    FALSE Answer & Explanation Answer:
    Correct
    Wrong
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Answer : 1. "TRUE"
Explanation :

Answer: A) TRUE Explanation: True. Hormones are chemicals secreted and regulated by the endocrine system.

Q: You can drop me from the longest building & I will be LIVE, but if you drop me in the water I DIE. WHO AM I? 1376 0

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Answer :
Explanation :

A Paper.

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