Chemistry questions
29404 published questions with worked solutions.
- A metal complex with a formula MCl_4.3NH_3 is involved in sp^3d^2 hybridisation. It upon reaction with excess of AgNO_3 solution...
- x mg of Mg(OH)_2 (molar mass = 58) is required to be dissolved in 1.0 L of water to produce a pH of 10.0 at 298 K. The value of x...
- The amount of calcium oxide produced on heating 150 kg limestone (75% pure) is _____ kg. (Nearest integer) Given: Molar mass (in...
- The molar conductance of an infinitely dilute solution of ammonium chloride was found to be 185 S cm^2 mol^ -1 and the ionic...
- Given below are two statements : 1 M aqueous solutions of each of Cu(NO₃)₂, AgNO₃, Hg₂(NO₃)₂ ; Mg(NO₃)₂ are electrolysed using...
- Mixture of 1 g each of chlorobenzene, aniline and benzoic acid is dissolved in 50 mL ethyl acetate and placed in a separating...
- A(g) B(g) + C(g) is a first order reaction. Time: t, ∞ P_ system : p_t, p_ The reaction was started with reactant A only. Which...
- "P" is an optically active compound with molecular formula C₆H₁₂O. When 'P' is treated with 2, 4–dinitrophenlhydrazine, it gives...
- The number of unpaired electrons responsible for the paramagnetic nature of the following complex species are respectively:...
- Liquid A and B form an ideal solution. The vapour pressures of pure liquids A and B are 350 and 750 mm Hg respectively at the...
- ln SO₂, NO_2^- and N_3^- the hybridization at the central atom are respectively
- Given below are two statements Statement I: On hydrolysis, oligo peptides give rise to fewer number of α-amino acids while...
- 'X' is the number of acidic oxides among VO₂, V₂O₃, CrO₃, V₂O₅ and Mn₂O₇. The primary valency of cobalt in...
- Choose the incorrect trend in the atomic radii (r) of the elements.
- The extra stability of half-filled subshell is due to : (A) Symmetrical distribution of electrons (B) Smaller coulombic repulsion...
- The hydration energies of K⁺ and Cl⁻ are –x and –y kJ/mol respectively. If lattice energy of KCl is –z kJ/mol, then the heat of...
- Butane reacts with oxygen to produce carbon dioxide and water following the equation given below. C_4H_ 10 (g) + 13 2 O_2(g)...
- One litre buffer solution was prepared by adding 0.10 mol each of NH₃ and NH₄Cl in deionised water. The change in pH on addition...
- The number of paramagnetic metal complex species among [Co(NH₃)₆]³⁺, [Co(C₂O₄)₃]³⁻, [MnCl₆]³⁻, [Mn(CN)₆]³⁻, [CoF₆]³⁻, [Fe(CN)₆]³⁻...
- Consider separate solutions of 0.500 M C_2H_5OH(aq) , 0.100 M Mg_3(PO_4)_2(aq) , 0.250 M KBr(aq) and 0.125 M Na_3PO_4(aq) at...