IIT JEE Practice Question and Answer

Q: A can do a work in 9 days, B can do a work in 7 days, C can do a work in 5 days. A works on the first day, B works on the second day and C on the third day respectively that is they work on alternate days. When will they finish the work ? 965 0

  • 1
    [7 + (215/345)] days
    Correct
    Wrong
  • 2
    [6 + (11/215)] days
    Correct
    Wrong
  • 3
    [6 + (261/315)] days
    Correct
    Wrong
  • 4
    [5 + (112/351)] days
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "[6 + (261/315)] days"
Explanation :

Answer: C) [6 + (261/315)] days Explanation: After day 1, A finishes 1/9 of the work. After day 2, B finishes 1/7 more of the total work. (1/9) + (1/7) is finished. After day 3, C finishes 1/5 more of total work. Total finished is 143/315. So, after day 6, total work finished is 286/315.   Now remaining work =  29 /315   On day 7, A will work again    Work will be completed on day 7 when A is working. He must finish 29/315 of total remaining work.   Since he takes 9 days to finish the total task, he will need 261/315 of the day.    Total days required is 6 + (261/315) days.

Q: A man spend 20% of his monthly salary on his children's education and 50% of his salary on food and transport. After Paying the rent of Rs.1000, he is left with Rs.2000. What is his monthly salary? 965 0

  • 1
    7000
    Correct
    Wrong
  • 2
    10000
    Correct
    Wrong
  • 3
    14000
    Correct
    Wrong
  • 4
    20000
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "10000"
Explanation :

Answer: B) 10000 Explanation: Let his monthly salary be 'P' 20% on children's education = 20P100 = P5 50% on food and transport = 50P100 = P2 1000 on rent => P - P5 - P2 - 1000 = 2000=> 3P = 30000=> P = 10000   Therefore, his monthly salary = Rs. 10,000

Q: Google has introduced a new app named what that allows anybody to submit stories for and about their communities? 964 0

  • 1
    Bulletin
    Correct
    Wrong
  • 2
    Allo
    Correct
    Wrong
  • 3
    FastRead
    Correct
    Wrong
  • 4
    Google Express
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "Bulletin"
Explanation :

Answer: A) Bulletin Explanation:

Q: The 'IFSC Code' is an alphanumeric code comprising 11 characters that facilitates Electronic Fund Transfer in the country. The alphabet 'F' in the abbreviation 'IFSC' stands for ? 964 0

  • 1
    Fund
    Correct
    Wrong
  • 2
    Fast
    Correct
    Wrong
  • 3
    Financial
    Correct
    Wrong
  • 4
    First
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "Financial"
Explanation :

Answer: C) Financial Explanation: IFSC stands for - Indian Financial System Code. This is a code uniquely identifies each bank branch participating in the two main Payment and settlement systems in India : 1. RTGS - The Real Time Gross Settlement  (and) 2. NEFT - The National Electronic Fund Transfer (NEFT) systems.

Q: What happens during the bootstrap process? 964 0

  • Show AnswerHide Answer
  • Workspace

Answer :
Explanation :

A bootstrap is the process of starting up a computer. It also refers to the program that initializes the operating system (OS) during start-up. It referred to a bootstrap load button that was used to initiate a hardwired bootstrap program, or smaller program that executed a larger program such as the OS.

Q: Synonym of Trustworthy? 963 0

  • 1
    Tenacity
    Correct
    Wrong
  • 2
    Insolent
    Correct
    Wrong
  • 3
    Resolute
    Correct
    Wrong
  • 4
    Reliable
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "Reliable"
Explanation :

Answer: D) Reliable Explanation:

Q: Two dice are rolled simultaneously. Find the probability of getting the sum of numbers on the on the two faces divisible by 3 or 4? 963 0

  • 1
    3/7
    Correct
    Wrong
  • 2
    7/11
    Correct
    Wrong
  • 3
    5/9
    Correct
    Wrong
  • 4
    6/13
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "5/9"
Explanation :

Answer: C) 5/9 Explanation: Here n(S) = 6 x 6 = 36 E={(1,2),(1,5),(2,1),(2,4),(3,3),(3,6),(4,2),(4,5),(5,1),(5,4),(6,3) ,(6,6),(1,3),(2,2),(2,6),(3,1),(3,5), (4,4),(5,3),(6,2)} => n(E)=20 Required Probability n(P) = n(E)/n(S) = 20/36 = 5/9.

Q: At what temperature (in Fahrenheit) pure water freezes? 961 0

  • 1
    0
    Correct
    Wrong
  • 2
    17
    Correct
    Wrong
  • 3
    32
    Correct
    Wrong
  • 4
    39
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "32"
Explanation :

Answer: C) 32 Explanation: 32oFWe know that T(°F) = T(°C) × 1.8 + 3232(°F) = 0(°C)

      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