IIT JEE Practice Question and Answer

Q: Fa Hien visited india during the reign of 1945 0

  • 1
    Harshavardhana
    Correct
    Wrong
  • 2
    Chandragupta Maurya
    Correct
    Wrong
  • 3
    Ashoka
    Correct
    Wrong
  • 4
    Chandragupta Vikramaditya
    Correct
    Wrong
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Answer : 4. "Chandragupta Vikramaditya"
Explanation :

Answer: D) Chandragupta Vikramaditya Explanation: Fahien came to India during the reign of Chandragupta Vikramaditya.

Q: Important Time and Distance formulas with examples. 1945 0

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Answer :
Explanation :

1. How to find Speed(s) if distance(d) & time(t) is given:    Speed (S) = Distance (D)Time (T)     Ex: Find speed if a person travels 4 kms in 2 hrs? Speed = D/T = 4/2 = 2 kmph.   2.  Similarly, we can find distance (d)  if speed (s) & time (t) is given by   Distance (D) = Speed (S) x Time (T)   Ex : Find distance if a person with a speed of 2 kmph in 2 hrs? Distance D = S X T = 2 x 2 = 4 kms.    3.  Similarly, we can find time (t) if speed (s) &  distance (d) is given by   Time (T) = Distance (D)Speed (S)   Ex : Find in what time a person travels 4 kms with a speed of 2 kmph? Time T = D/S = 4/2 = 2 hrs.   4. How to convert  km/hr into m/sec :   P km/hr = P x 518 m/sec   Ex : Convert 36 kmph into m/sec? 36 kmph = 36 x 5/18 = 10 m/sec    5. How to convert  m/sec into km/hr :   P m/sec = P x 185 kmph.   Ex : Convert 10 m/sec into km/hr? 10 m/sec = 10 x 18/5 = 36 kmph.   6.  If the ratio of the speeds of A and B is a:b, then the ratio of the times taken by them to cover the same distance is b : a.   7.  Suppose a man covers a certain distance at x km/ hr and an equal distance at y km/hr . Then, the average speed during the whole journey is 2xyx+y km/hr.

Q: What is the difference in the shares of profit between P and Q in a joint business at the end of one year ? a. P Invested Rs. 80,000 and withdrew Rs. 20,000 after 6 months. b. Q joined four months after the start of business. c. Q's amount was 80% of P's amount during the last six months. 1945 0

  • 1
    Only a
    Correct
    Wrong
  • 2
    Only c
    Correct
    Wrong
  • 3
    Both a & b
    Correct
    Wrong
  • 4
    Data is not sufficient
    Correct
    Wrong
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Answer : 4. "Data is not sufficient"
Explanation :

Answer: D) Data is not sufficient Explanation: a. P's investment = (80000 x 6 + 60000 x 6) = 840000 for 1 month. b & c. Q's investment = 80% of Rs. 60000 for 8 months. = Rs.(48000 x 8) for 1 month = 384000 for 1 month P : Q = 840000 : 384000 = 35 : 16. But, the total profit is not given, so data is inadequate.

Q: What is true about personal financial planning? 1945 0

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    Personal financial planning is the process of creating and achieving financial goals
    Correct
    Wrong
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    Our financial decisions decrease once we reach adulthood
    Correct
    Wrong
  • 3
    A family's resources are unlimited
    Correct
    Wrong
  • 4
    There are two means for achieving financial goals—you either need to increase your spending or reduce savings
    Correct
    Wrong
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Answer : 1. "Personal financial planning is the process of creating and achieving financial goals"
Explanation :

Answer: A) Personal financial planning is the process of creating and achieving financial goals Explanation: Personal financial planning is the process of creating and achieving financial goals.   True statements regarding personal financial planning: As we age, the number and complexity of the financial decisions that we make increases. There are two means for achieving financial goals—you either need to increase your savings or reduce spending. A family's resources are limited.

Q: Iron rusting, chemical or physical change 1944 0

  • 1
    Chemical
    Correct
    Wrong
  • 2
    Physical
    Correct
    Wrong
  • 3
    Both A & B
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 1. "Chemical"
Explanation :

Answer: A) Chemical Explanation: In rusting the Iron ore make a chemical reaction with the oxygen in the presence of water and environmental or atmospheric moisture to produce an Iron oxide. Iron oxide is otherwise called as rust. The rusting of iron is a chemical change because it is two substances reacting together to make a new substance.

Q: Diversification is important in investing because 1944 0

  • 1
    It ensures that you only make low-risk investments.
    Correct
    Wrong
  • 2
    It helps you to balance your risk across different types of investments.
    Correct
    Wrong
  • 3
    It helps you gain the highest rate of return despite any risks.
    Correct
    Wrong
  • 4
    It increases your overall risk, which guarantees that you will make more money.
    Correct
    Wrong
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Answer : 2. "It helps you to balance your risk across different types of investments."
Explanation :

Answer: B) It helps you to balance your risk across different types of investments. Explanation:

Q: Telengana creation as in independent state is primarily the outcome of _____ ? 1943 0

  • 1
    16th Lok Sabha
    Correct
    Wrong
  • 2
    15th Lok Sabha
    Correct
    Wrong
  • 3
    14th Lok Sabha
    Correct
    Wrong
  • 4
    13 Lok Sabha
    Correct
    Wrong
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Answer : 2. "15th Lok Sabha"
Explanation :

Answer: B) 15th Lok Sabha Explanation:

Q: With an average speed of 40 km/hr, a train reaches its destination in time. If it goes with an average speed of 35 km/hr, it is late by 15 minutes. Find the length of the total journey? 1942 0

  • 1
    70 kms
    Correct
    Wrong
  • 2
    60 kms
    Correct
    Wrong
  • 3
    45 kms
    Correct
    Wrong
  • 4
    30 kms
    Correct
    Wrong
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Answer : 1. "70 kms"
Explanation :

Answer: A) 70 kms Explanation: Let the time taken by train be 't' hrs. Then, 40t = 35t + 1560 40t = 35t + 35/4 t = 7/4 hrs Therefore, Required length of the total journey d = s x t = 40 x 7/4 = 70 kms.

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