Practice questions
88551 published questions with worked solutions.
- Liquid 'M' and liquid 'N' form an ideal solution. The vapour pressures of pure liquids 'M' and 'N' are 450 and 700 mmHg,...
- The correct order of the oxidation states of nitrogen in NO, N_2O, NO_2 and N_2O_3 is:
- Magnesium powder burns in air to give:Not in JEE Main or NEET syllabus
- The number of water molecule(s) not coordinated to copper ion directly in CuSO_4·5H_2O, is:
- Match the catalysts (Column I) with products (Column II). List-I: (A) V_2O_5 (B) TiCl_4/Al(Me)_3 (C) PdCl_2 (D) Iron Oxide...
- C_ 60 , an allotrope of carbon contains:
- Among the following, the molecule expected to be stabilized by anion formation is: C_2, O_2, NO, F_2
- The osmotic pressure of a dilute solution of an ionic compound XY in water is four times that of a solution of 0.01 M BaCl_2 in...
- The standard Gibbs energy for the given cell reaction in kJ mol^ -1 at 298 K is: Zn(s) + Cu^ 2+ (aq) → Zn^ 2+ (aq) + Cu(s), E° =...
- The element having greatest difference between its first and second ionization energies, is:
- The aerosol is a kind of colloid in which:Not in JEE Main or NEET syllabus
- The ore that contains the metal in the form of fluoride is:
- Consider the van der Waals constants, a and b, for the following gases. | Gas | Ar | Ne | Kr | Xe | |---|---|---|---|---| |...
- For a reaction, N_2(g) + 3H_2(g) → 2NH_3(g); identify dihydrogen (H_2) as a limiting reagent in the following reaction mixtures.
- Among the following, the set of parameters that represents path functions, is: (A) q + w (B) q (C) w (D) H − TS
- Which of the following statements is not true about sucrose?
- Let = 3 i + j and = 2 i - j + 3 k. If = _1 - _2, where _1 is parallel to and _2 is perpendicular to , then _1 _2 is equal to:
- Let S be the set of all values of x for which the tangent to the curve y = f(x) = x^3 - x^2 - 2x at (x, y) is parallel to the...
- Let S = [-2 , 2 ] : 2 ^2 + 3 = 0 . Then the sum of the elements of S is:Not in JEE Main syllabus
- For any two statements p and q, the negation of the expression p ( p q) is:Not in JEE syllabus