Chemistry questions
29404 published questions with worked solutions.
- The main reason for larger number of oxidation states exhibited by the actinides than the corresponding lanthanides, is :
- Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given...
- A solution has a 1 : 4 mole ratio of pentane to hexane. The vapour pressure of the pure hydrocarbons at 20°C are 440 mm of Hg for...
- 4.5g of aluminium (at. mass 27 amu) is deposited at cathode from Al^ 3+ solution by a certain quantity of electric charge. The...
- The best method for the separation of naphthalene and benzoic acid from their mixture is :
- The mole fraction of the solute in one molal aqueous solution is :
- Which one of the following compounds will give orange precipitate when treated with 2,4-dinitrophenyl hydrazine ?
- The product obtained from the electrolytic oxidation of acidified sulphate solutions, is :
- The parameters of the unit cell of a substance are a = 2.5, b = 3.0, c = 4.0, = 90°, = 120°. = 90°. The crystal system of the...Not in JEE Main or NEET syllabus
- The oxidation states of 'P' in H_4P_2O_7, H_4P_2O_5 and H_4P_2O_6, respectively, are :
- For a reaction of order n, the unit of the rate constant is :
- Given below are two statements : Statement I : Aniline is less basic than acetamide. Statement II : In aniline, the lone pair of...
- The type of hybridisation and magnetic property of the complex [MnCl_6]^ 3- , respectively, are :
- The number of geometrical isomers found in the metal complexes [PtCl_2(NH_3)_2], [Ni(CO)_4], [Ru(H_2O)_3Cl_3] and...
- Statement I : Rutherford's gold foil experiment cannot explain the line spectrum of hydrogen atom. Statement II : Bohr's model of...
- Presence of which reagent will affect the reversibility of the following reaction, and change it to a irreversible reaction :...
- Which one among the following chemical tests is used to distinguish monosaccharide from disaccharide ?
- Match List-I with List-II : List-I (Drug): (a) Furacin (b) Arsphenamine (c) Dimetone (d) Valium List-II (Class of Drug): (i)...Not in JEE Main or NEET syllabus
- Consider the given reaction: cyclohexanol derivative [120°C] H_3PO_4 A (Major Product); A [H_2O_2/OH] (BH_3)_2 P (Major Product)...
- Staggered and eclipsed conformers of ethane are :