JEE Main questions
34495 published questions with worked solutions.
- Among SO₂, NF₃, NH₃, XeF₂, ClF₃ and SF₄, the hybridization of the molecule with non-zero dipole moment and highest number of...
- Given below are two statements : Statement (I) : In octahedral complexes, when Δ₀ < P high spin complex are formed. Statement...
- A molecule with the formula AX₄Y has all its elements from p-block. Element A is rarest, monoatomic, non-radioactive from its...
- An optically active alkyl halide C₄H₉Br [A] reacts with hot KOH dissolved in ethanol and forms alkene [B] as major product which...
- If equal volumes of AB₂ and XY (both are salts) aqueous solutions are mixed, which of the following combination will give a...
- On complete combustion 1.0g of an organic compound (X) gave 1.46 g of CO₂ and 0.567 g of H₂O. The empirical formula mass of...
- The property/properties that show irregularity in first four elements of group-17 is/are (A) Covalent radius (B) Electron...
- Choose the correct tests with respective observations. (A) CuSO₄ (acidified with acetic acid) + K₄[Fe(CN)₆] → Chocolate brown...
- According to Bohr's model of hydrogen atom, which of the following statement is incorrect?
- CaCO₃(s) + 2HCl(aq) → CaCl₂(aq) + CO₂(g) + H₂O(l) Consider the above reaction, what mass of CaCl₂ will be formed if 250 mL of...
- Consider the following equilibrium, CO(g) + 2H₂(g) CH₃OH(g) 0.1 mol of CO along with a catalyst is present in a 2 dm³ flask...
- Consider the following electrochemical cell at standard condition. Au(s)|QH₂,Q|NH₄X(0.01 M)||Ag⁺(1 M)|Ag(s) Ecell = + 0.4 V The...
- Line L1 of slope 2 and line L2 of slope 1 2 intersect at the origin O. In the first quadrant, P1, P2 ….P12 are 12 points on line...
- Let the Mean and Variance of five observations x_1 = 1, x_2 = 3, x_3 = a, x_4 = 7 and x_5 = b, a > b, be 5 and 10 respectively....
- Let the equation x(x+2)(12-k) = 2 have equal roots. Then the distance of the point (k, k 2 ) from the line 3x + 4y + 5 = 0 is
- The integral _0^ 8x ,dx 4 ^2 x + ^2 x is equal to
- If the domain of the function f(x) = _7(1 - _4(x^2 - 9x + 18))) is ( , ) ( , ), then + + + is equal to
- Let f: R R be a function defined by f(x) = ||x+2| - 2|x||. If m is the number of points of local minima and n is the number of...
- If the probability that the random variable X takes the value x is given by P(X = x) = k(x+1) 3^ -x , x = 0, 1, 2, 3 , where k is...
- Each of the angles and that a given line makes with the positive y and z-axes, respectively, is half of the angle that this line...