Practice questions
88551 published questions with worked solutions.
- 20 mL of 0.1 M H_2SO_4 solution is added to 30 mL of 0.2 M NH_4OH solution. The pH of the resultant mixture is: [pK_b of NH_4OH =...
- The increasing order of pKa of the following amino acids in aqueous solution is: Gly Asp Lys Arg
- According to molecular orbital theory, which of the following is true with respect to Li_2^+ and Li_2^-?
- Two complexes [Cr(H_2O)_6]Cl_3 (A) and [Cr(NH_3)_6]Cl_3 (B) are violet and yellow coloured, respectively. The incorrect statement...
- Which one of the following statements regarding Henry's law is not correct?
- The highest value of the calculated spin only magnetic moment (in BM) among all the transition metal complexes is:
- A solution of sodium sulfate contains 92 g of Na^+ ions per kilogram of water. The molality of Na^+ ions in that solution in mol...
- The isotopes of hydrogen are:Not in JEE Main or NEET syllabus
- Aluminium is usually found in +3 oxidation state. In contrast, thallium exists in +1 and +3 oxidation states. This is due to:
- _ y 0 1 + 1 + y^4 - 2 y^4
- If a, b and c be three distinct real numbers in G.P. and a + b + c = xb, then x cannot be:
- The maximum volume (in cu. m) of the right circular cone having slant height 3 m is:
- The system of linear equations x + y + z = 2, 2x + 3y + 2z = 5, 2x + 3y + (a^2 - 1)z = a + 1
- Let f: R R be a function defined as f(x) = cases 5, & if x 1 a + bx, & if 1 < x < 3 b + 5x, & if 3 x < 5 30, & if x 5 cases ....
- Axis of a parabola lies along x-axis. If its vertex and focus are at distances 2 and 4 respectively from the origin, on the...
- Let α and β be two roots of the equation x^2 + 2x + 2 = 0, then ^ 15 + ^ 15 is equal to:
- If the Boolean expression (p q) ( p q) is equivalent to p q, where ⊕, ⊙ ∈ ∧, ∨ , then the ordered pair (⊕, ⊙) is:Not in JEE syllabus
- Let a = i - j, b = i + j + k and c be a vector such that a c + b = 0 and a c = 4, then | c|^2 is equal to:
- 5 students of a class have an average height 150 cm and variance 18 cm^2. A new student, whose height is 156 cm, joined them. The...
- Let A = (- 2, ) : 3 + 2i 1 - 2i is purely imaginary . Then the sum of the elements in A is: