JEE Main questions
34568 published questions with worked solutions.
- Given below are two statements : Statement (I) : The 4f and 5f - series of elements are placed separately in the Periodic table...
- Sum of bond order of CO and NO⁺ is ________.
- Mass of methane required to produce 22 g of CO₂ after complete combustion is ________ g. (Given Molar mass in g mol⁻¹ C = 12.0, H...
- From the given list, the number of compounds with +4 oxidation state of Sulphur is ________. SO₃, H₂SO₃, SOCl₂, SF₄, BaSO₄, H₂S₂O₇
- 3-Methylhex-2-ene on reaction with HBr in presence of peroxide forms an addition product (A). The number of possible...
- Consider the following data for the given reaction 2 HI(g) → H₂(g) + I₂(g) | Experiment | 1 | 2 | 3 | |---|---|---|---| | HI (mol...
- If three moles of an ideal gas at 300 K expand isothermally from 30 dm³ to 45 dm³ against a constant opposing pressure of 80 kPa,...
- The number of electrons present in all the completely filled subshells having n = 4 and s = +½ is ________. (Where n = principal...
- Among the following, total number of meta directing functional groups is ________. (Integer based) –OCH₃, –NO₂, –CN, –CH₃,...
- The mass of silver (Molar mass of Ag : 108 gmol⁻¹) displaced by a quantity of electricity which displaces 5600 mL of O₂ at S.T.P....
- The function f : N – 1 → N; defined by f(n) = the highest prime factor of n, is:
- Let x = x(t) and y = y(t) be solutions of the differential equations dx dt + ax = 0 and dy dt + by = 0 respectively, a, b ∈ R....
- Let S = 1, 2, 3, …, 10 . Suppose M is the set of all the subsets of S, then the relation R = (A, B) : A ∩ B ≠ φ ; A, B ∈ M is:
- If a = _ x 0 1+ 1+x^4 - 2 x^4 and b = _ x 0 ^2x 2- 1+ x , then the value of ab³ is :
- The length of the chord of the ellipse x^2 25 + y^2 16 = 1, whose mid point is (1, 25 ), is equal to :
- If S = z ∈ C : |z – i| = |z + i| = |z – 1| , then n(S) is:
- Consider the matrix f(x) = bmatrix x & - x & 0 x & x & 0 0 & 0 & 1 bmatrix Given below are two statements : Statement I : f(–x)...
- ^ n-1 C_r = (k^2 - 8) , ^nC_ r+1 if and only if :
- The distance of the point (7, –2, 11) from the line x-6 1 = y-4 0 = z-8 3 along the line x-5 2 = y-1 -3 = z-5 6 is :
- Four distinct points (2k, 3k), (1, 0), (0, 1) and (0, 0) lie on a circle for k equal to :