JEE Main questions
34495 published questions with worked solutions.
- The coagulating power of electrolytes having ions Na⁺, Al³⁺ and Ba²⁺ for arsenic sulphide sol increases in the order -Not in JEE Main or NEET syllabus
- Consider the following reaction : xMnO_4^- + yC_2O_4^ 2- + zH^+ xMn^ 2+ + 2yCO_2 + z 2 H_2O The values of x, y and z in the...
- Which of the following exists as covalent crystals in the solid state ?Not in JEE Main or NEET syllabus
- A solution of (–) – 1 – chloro – 1 – phenylethane in toluene racemises slowly in the presence of a small amount of SbCl₅, due to...
- An unknown alcohol is treated with the "Lucas reagent" to determine whether the alcohol is primary, secondary or tertiary. Which...
- How many litres of water must be added to 1 litre of an aqueous solution of HCl with a pH of 1 to create an aqueous solution with...
- The molarity of a solution obtained by mixing 750 mL of 0.5(M)HCl with 250 ml of 2(M)HCl will be -
- A piston filled with 0.04 mol of an ideal gas expands reversibly from 50.0 mL to 375 mL at a constant temperature of 37.0ºC. As...
- Stability of the species Li_2, Li_2^- and Li_2^+ increases in the order of -
- Synthesis of each molecule of glucose in photosynthesis involves -
- Given E^0_ Cr^ 3+ /Cr = -0.74 V; E^0_ MnO_4^-/Mn^ 2+ = 1.51 V E^0_ Cr_2O_7^ 2- /Cr^ 3+ = 1.33 V; E^0_ Cl/Cl^- = 1.36 V Based on...
- If the domain of the function f(x) = ^ -1 ( 2x-5 11-3x ) + ^ -1 (2x^2 - 3x + 1) is the interval [ , ], then + 2 is equal to :
- The number of relations, defined on the set a, b, c, d , which are both reflexive and symmetric, is equal to:
- Let a = - i + 2 j + 2 k , b = 8 i + 7 j - 3 k and c be a vector such that a c = b . If c ( i + j + k ) = 4, then | a + c |^2 is...
- Let a_1, a_2, a_3, be a G.P. of increasing positive terms such that a_2 a_3 a_4 = 64 and a_1 + a_3 + a_5 = 813 7 . Then a_3 + a_5...
- Let c and d be vectors such that | c + d | = 29 and c (2 i + 3 j + 4 k ) = (2 i + 3 j + 4 k ) d . If _1, _2 ( _1 > _2) are the...
- Let y = y(x) be the solution curve of the differential equation (1 + x^2)dy + (y - ^ -1 x)dx = 0, y(0) = 1. Then the value of...
- The number of strictly increasing functions f from the set 1, 2, 3, 4, 5, 6 to the set 1, 2, 3, , 9 such that f(i) i for 1 i 6,...
- Let f : R (0, ) be a twice differentiable function such that f(3) = 18, f'(3) = 0 and f''(3) = 4. Then _ x 1 ( _e ( f(2+x) f(3)...
- Let the foci of hyperbola coincide with the foci of the ellipse x^2 36 + y^2 16 = 1. If the eccentricity of the hyperbola is 5,...