JEE Main questions
34495 published questions with worked solutions.
- The electronegativity of aluminium is similar to:
- Which primitive unit cell has unequal edge lengths (a ≠ b ≠ c) and all axial angles different from 90º?Not in JEE Main or NEET syllabus
- The values of K_p/K_c for the following reactions at 300 K are, respectively: (At 300 K, RT = 24.62 dm^3 atm mol^ -1 ) N_2(g) +...
- If dichloromethane (DCM) and water (H_2O) are used for differential extraction, which one of the following statements is correct?
- Two pi and half sigma bonds are present in:
- Wilkinson catalyst is: (Et = C_2H_5)
- The chemical nature of hydrogen peroxide is:
- The effect of lanthanoid contraction in the lanthanoid series of elements by and large means:
- Liquids A and B form an ideal solution in the entire composition range. At 350 K, the vapor pressures of pure A and pure B are 7...
- The total number of isomers for a square planar complex [M(F)(Cl)(SCN)(NO_2)] is:
- Consider the following reduction processes: Zn^ 2+ + 2e^- → Zn(s); E° = −0.76 V Ca^ 2+ + 2e^- → Ca(s); E° = −2.87 V Mg^ 2+ + 2e^-...
- In a class of 140 students numbered 1 to 140, all even numbered students opted Mathematics course, those whose number is...
- Let a = 2 i + _1 j + 3 k, b = 4 i + (3 - _2) j + 6 k, and c = 3 i + 6 j + ( _3 - 1) k be three vectors such that b = 2 a and a is...
- Consider the statement: "P(n): n^2 - n + 41 is prime". Then which one of the following is true?Not in JEE syllabus
- If a circle C passing through the point (4, 0) touches the circle x^2 + y^2 + 4x - 6y = 12 externally at the point (1, −1), then...
- If the parabolas y^2 = 4b(x - c) and y^2 = 8ax have a common normal, then which one of the following is a valid choice for the...
- The plane passing through the point (4, −1, 2) and parallel to the lines x+2 3 = y-2 -1 = z+1 2 and x-2 1 = y-3 2 = z-4 3 also...
- Let n ≥ 2 be a natural number and 0 < < 2. Then ( ^n - )^ 1/n ^ n+1 d is equal to: (where C is a constant of integration)
- If the system of equations x + y + z = 5, x + 2y + 3z = 9, x + 3y + αz = β has infinitely many solutions, then β − α equals:
- An unbiased coin is tossed. If the outcome is a head then a pair of unbiased dice is rolled and the sum of the numbers obtained...