JEE Main questions
34495 published questions with worked solutions.
- A paramagnetic material has 10^ 28 atoms/m^3. Its magnetic susceptibility at temperature 350 K is 2.8 10^ -4 . Its susceptibility...Not in JEE Advanced syllabus
- To double the covering range of a TV transmission tower, its height should be multiplied by:Not in JEE or NEET syllabus
- °_m for NaCl, HCl and NaA are 126.4, 425.9 and 100.5 S cm^2 mol^ -1 , respectively. If the conductivity of 0.001 M HA is 5 10^ -5...
- Molecules of benzoic acid (C_6H_5COOH) dimerise in benzene. 'w' g of the acid dissolved in 30 g of benzene shows a depression in...
- If the de Broglie wavelength of the electron in nth Bohr orbit in a hydrogenic atom is equal to 1.5 a_0 (a_0 is Bohr radius),...
- Given: (i) C(graphite) + O_2(g) → CO_2(g); _rH° = x kJ mol^ -1 ; (ii) C(graphite) + ½O_2(g) → CO(g); _rH° = y kJ mol^ -1 ; (iii)...
- 8 g of NaOH is dissolved in 18 g of H_2O. Mole fraction of NaOH in solution and molality (in mol kg^ -1 ) of the solution...
- If K_ sp of Ag_2CO_3 is 8 10^ -12 , the molar solubility of Ag_2CO_3 in 0.1 M AgNO_3 is:
- The two monomers for the synthesis of Nylon 6,6 are:Not in JEE Main or NEET syllabus
- The volume strength of 1 M H_2O_2 is: (Molar mass of H_2O_2 = 34 g mol^ -1 )
- The element that shows greater ability to form pπ-pπ multiple bonds, is:
- Chlorine on reaction with hot and concentrated sodium hydroxide gives:
- The magnetic moment of an octahedral homoleptic Mn(II) complex is 5.9 BM. The suitable ligand for this complex is:
- The correct order of atomic radii is:
- _ x 1^- - 2 ^ -1 x 1 - x is equal to:
- The equation of a tangent to the parabola, x^2 = 8y, which makes an angle θ with the positive directions of x-axis, is:
- If the sum of the first 15 terms of the series ( 34 )^3 + (1 12 )^3 + (2 14 )^3 + 3^3 + (3 34 )^3 + is equal to 225k, then k is...
- In a game, a man wins Rs. 100 if he gets 5 or 6 on a throw of a fair die and loses Rs. 50 for getting any other number on the...
- If a curve passes through the point (1, −2) and has slope of the tangent at any point (x, y) on it as x^2 - 2y x , then the curve...
- The integral _1^e ( xe )^ 2x - ( ex )^x _ex ,dx is equal to: