Practice questions
88551 published questions with worked solutions.
- For complete combustion of ethanol, C_2H_5OH(l) + 3O_2(g) 2CO_2(g) + 3H_2O(l) , the amount of heat produced as measured in bomb...
- The octahedral complex of a metal ion M^ 3+ with four monodentate ligands L_1, L_2, L_3 and L_4 absorb wavelengths in the region...
- In which of the following reactions H_2O_2 acts as a reducing agent? (a) H_2O_2 + 2H^+ + 2e^- 2H_2O (b) H_2O_2 - 2e^- O_2 + 2H^+...
- The correct statement for the molecule CsI_3 , is -
- The major organic compound formed by the reaction of 1, 1, 1-trichloroethane with silver powder is:
- The equivalent conductance of NaCl at concentration C and at infinite dilution are _C and _ , respectively. The correct...
- Resistance of 0.2 M solution of an electrolyte is 50 Ω. The specific conductance of the solution is 1.4 S m^ -1 . The resistance...
- The correct set of four quantum numbers for the valence electrons of rubidium atom (Z = 37) is -
- For the non-stoichiometric reaction 2A + B C + D , the following kinetic data were obtained in three separate experiments all at...
- In S_N2 reactions, the correct order of reactivity for the following compounds: CH_3Cl , CH_3CH_2Cl , (CH_3)_2CHCl and...
- _ x 0 ( ^2 x) x^2 is equal to
- Let the population of rabbits surviving at a time t be governed by the differential equation dp(t) dt = 1 2 p(t) - 200. If p(0) =...
- The statement (p q) isNot in JEE syllabus
- Let and be the roots of equation px^2 + qx + r = 0, p 0. If p, q, r are in A.P. and 1 + 1 = 4, then the value of | - | is
- Let PS be the median of the triangle with vertices P(2, 2), Q(6, -1) and R(7, 3). The equation of the line passing through (1,...
- The area of the region described by A = (x, y) : x^2 + y^2 1 and y^2 1 - x is:
- If A is an 3 3 non-singular matrix such that AA' = A'A and B = A^ -1 A', then BB' equals:
- The image of the line x - 1 3 = y - 3 1 = z - 4 -5 in the plane 2x - y + z + 3 = 0 is the line:
- If x = -1 and x = 2 are extreme points of f(x) = |x| + x^2 + x then:
- If a R and the equation -3(x - [x])^2 + 2(x - [x]) + a^2 = 0 (where [x] denotes the greatest integer x) has no integral solution,...