Practice questions
88551 published questions with worked solutions.
- The correct order of acidic strength of the major products formed in the given reactions, is : A. PhNH_2 [(2) ,CuCN] (1)...
- Total number of alkali insoluble solid sulphonamides obtained by reaction of given amines with Hinsberg's reagent is……. Aniline,...
- Consider the following reactions. Na_2B_4O_7 2X+Y CuSO_4+Y Non-Luminous flame Z+SO_3 2Z+2X+Carbon Luminous flame 2Q+Na_2B_4O_7+CO...
- For the given reaction; CaCO_3+2HCl CaCl_2+H_2O+CO_2 If 90 g CaCO_3 is added to 300 mL of HCl which contains 38.55% HCl by mass...
- The correct increasing order of spin-only magnetic moment values of the complex ions [MnBr_4]^ 2- (A), [Cu(H_2O)_6]^ 2+ (B),...
- A B (first reaction) C D (second reaction) Consider the above two first-order reactions. The rate constant for first reaction at...
- For strong electrolyte _m increases slowly with dilution and can be represented by the equation _m= °_m-Ac^ 1/2 Molar...
- A volume of x mL of 5M ,NaHCO_3 solution was mixed with 10 mL of 2M ,H_2CO_3 solution to make an electrolytic buffer. If the same...
- The number of non-empty equivalence relations on the set 1,2,3 is :
- Let ƒ : R→R be a twice differentiable function such that ƒ(x + y) = ƒ(x) ƒ(y) for all x, y ∈ R. If ƒ'(0) = 4a and ƒ satisfies...
- Let the triangle PQR be the image of the triangle with vertices (1,3), (3,1) and (2, 4) in the line x + 2y = 2. If the centroid...
- Let z1, z2 and z3 be three complex numbers on the circle |z| = 1 with arg (z1) = - 4 , arg(z2) = 0 and arg(z3) = 4 . If |z_1 z_2...
- Using the principal values of the inverse trigonometric functions the sum of the maximum and the minimum values of 16((sec–1x)² +...
- Let a1, a2, a3..... be a G.P. of increasing positive terms. If a1a5 = 28 and a2 + a4 = 29, then a6 is equal to
- Let L1 : x-1 2 = y-2 3 = z-3 4 and L2 : x-2 3 = y-4 4 = z-5 5 be two lines. Then which of the following points lies on the line...
- The product of all solutions of the equation e^ 5( _e x)^2+3 = x^8 , x > 0, is :
- If _ r=1 ^ n T_r = (2n-1)(2n+1)(2n+3)(2n+5) 64 , then _ n _ r=1 ^ n ( 1 T_r ) is equal to :
- From all the English alphabets, five letters are chosen and are arranged in alphabetical order. The total number of ways, in...
- Let for ƒ(x) = 7tan⁸x + 7tan⁶x – 3tan⁴x – 3tan²x, I_1 = _0^ /4 f(x)dx and I_2 = _0^ /4 xf(x)dx. Then 7I1 + 12I2 is equal to :
- Two balls are selected at random one by one without replacement from a bag containing 4 white and 6 black balls. If the...