Practice questions
88551 published questions with worked solutions.
- A parallel plate capacitor has charge 5 10^ -6 C. A dielectric slab is inserted between the plates and almost fills the space...
- 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⁻...
- Let A and B be two sets, then (A B)' (A' B) is equal to
- If S is a set with 10 elements and A= (x,y):x,y S, x y , then the number of elements in A is
- For any two sets A and B, if A X=B X= and A X=B X for some set X, then (AMU 2009)
- The shaded region in the figure represents