JEE Main questions
34495 published questions with worked solutions.
- The molar conductivity of a weak electrolyte when plotted against the square root of its concentration, which of the following is...
- At temperature T, compound AB_ 2(g) dissociates as AB_ 2(g) AB_ (g) + 1 2 B_ 2(g) having degree of dissociation x (small compared...
- Choose the correct statements. (A) Weight of a substance is the amount of matter present in it. (B) Mass is the force exerted by...
- The correct increasing order of stability of the complexes based on _o value is : (I) [Mn(CN)_6]^ 3- (II) [Co(CN)_6]^ 4- (III)...
- Match List-I with List-II. List-I (Complex): (A) [MnBr_4]^ 2- (B) [FeF_6]^ 3- (C) [Co(C_2O_4)_3]^ 3- (D) [Ni(CO)_4] List-II...
- For a Mg | Mg²⁺ (aq) || Ag⁺(aq) | Ag the correct Nernst Equation is :
- The correct option with order of melting points of the pairs (Mn, Fe), (Tc, Ru) and (Re, Os) is :
- 1.24 g of AX_2 (molar mass 124 g mol⁻¹) is dissolved in 1 kg of water to form a solution with boiling point of 100.0156°C, while...
- The reaction A_2 + B_2 2AB follows the mechanism A_2 k_ -1 k_1 A + A (fast) A + B_2 k_2 AB + B (slow) A + B AB (fast) The overall...
- An element 'E' has the ionisation enthalpy value of 374 kJ mol⁻¹. 'E' reacts with elements A, B, C and D with electron gain...
- Match List – I with List – II. List – I (Carbohydrate): (A) Amylose (B) Cellulose (C) Glycogen (D) Amylopectin List – II (Linkage...
- Given below are two statements : Statement (I) : The radii of isoelectronic species increases in the order. Mg^ 2+ < Na^+ < F^- <...
- The sum of sigma (σ) and pi(π) bonds in Hex-1,3-dien-5-yne is _______.
- If A_2B is 30% ionised in an aqueous solution, then the value of van't Hoff factor (i) is _____×10⁻¹.
- If the set of all a R, for which the equation 2x^2 + (a-5)x + 15 = 3a has no real root, is the interval ( , ), and X = x Z : < x...
- If x + ^2x = 1, x (0, 2 ), then ( ^ 12 x + ^ 12 x) + 3( ^ 10 x + ^ 10 x + ^8x + ^8x) + ( ^6x + ^6x) is equal to
- Let the area enclosed between the curves |y| = 1 - x^2 and x^2 + y^2 = 1 be . If 9 = + ; , are integers, then the value of | - |...
- If the domain of the function _5(18x - x^2 - 77) is ( , ) and the domain of the function _ (x-1) ( 2x^2+3x-2 x^2-3x-4 ) is ( , ),...
- Let a straight line L pass through the point P(2, –1, 3) and be perpendicular to the lines x-1 2 = y+1 1 = z-3 -2 and x-3 1 = y-2...
- Let S = N 0 . Define a relation R from S to R by : R = (x,y): _e y = x _e ( 2 5 ), x S, y R Then, the sum of all the elements in...