JEE

Recommended Question & Answers for JEE

•  Which of the following is not an empty set?
  • a)
    {x : x is a multiple of 7, x < 7, x ∈ N}
  • b)
    Set of common points of two parallel lines in a plane
  • c)
    {x : 6 + 2x > 5x + 3, x ∈ N}
  • d)
    Set of smallest whole number
  Correct answer is 'D'. Can you explain this answer?
• The sum of the series is              [2007]
  • a)
    0
  • b)
    ²⁰ C₁₀
  • c)
    ^{- 20} C₁₀
  • d)
    
  Correct answer is option 'D'. Can you explain this answer?
• 
  • a)
     where C is the constant of integration
  • b)
    where C is the constant of integration
  • c)
    where C is the constant of integration
  • d)
    where C is the constant of integration
  Correct answer is option 'A'. Can you explain this answer?
• Half-life of a reaction is 20 sec. If t₂ is second half-life of reaction assuming it to be zero order and t₃ is third half-life assuming it to be 2^nd order reaction, then t₃/t₂ = ?
  Correct answer is '8'. Can you explain this answer?
• For what real value of y will matrix A be equal to... more matrix B, where
  ​a)1, 3
  b)No real value
  c)1/3, 1/2
  d)2 and 3
  Correct answer is option 'c'. Can you explain this answer?
• Which app is better - unacademy or edurev?
• How many monochlorobutanes will be possible on chlorination of n-butane?
  • a)
    2
  • b)
    3
  • c)
    5
  • d)
    1
  Correct answer is option 'A'. Can you explain this answer?
• If sin θ is real, then θ =
  • a)
    π
  • b)
    π/2
  • c)
    π/3
  • d)
    π/6
  Correct answer is option 'A'. Can you explain this answer?
• If the sum of n terms of an A.P. is 2n² + 5n, then find the 4th term.
  • a)
    4n – 3
  • b)
    3n – 4       
  • c)
    4n + 3
  • d)
    3n + 4
  Correct answer is option 'C'. Can you explain this answer?
•  

  
  • a)
    
  • b)
    
  • c)
    
  • d)
    
  Correct answer is option 'A'. Can you explain this answer?
• Why this ray don't paas through F ( that ray which is Highlighted)?
• If A = {2,3,4,8,10}, B = {3,4,5,10,12} and C = {4,5,6,12,14}, then (A∪B)∩(A∪C) is equal to
  • a)
    {4,5,8,10,12}
  • b)
    {3,8,10,12}
  • c)
    {2,4,5,10,12}
  • d)
    { 2,3,4,5,8,10,12}
  Correct answer is option 'D'. Can you explain this answer?
• IN 5 seconds a body covers 50m and in 10s it covers 80m.How much distance it will cover in 15s?
• The fundamental period of the function f(x) = 2 cos 1/3(x - π) is
  • a)
    6π
  • b)
    4π
  • c)
    2π
  • d)
    π
  Correct answer is option 'A'. Can you explain this answer?
• For several reactions an increase in temperature from 300K to 310K increases the rate approximately by__
  • a)
    3.3%
  • b)
    100%
  • c)
    10%
  • d)
    1000%
  Correct answer is option 'B'. Can you explain this answer?