Chemistry questions
29404 published questions with worked solutions.
- The correct statement(s) about the compound H_3C(HO)HC - CH = CH - CH(OH)CH_3 (X) is(are)
- For a first order reaction A → P, the temperature (T) dependent rate constant (k) was found to follow the equation k = -(2000) 1...
- The spin only magnetic moment value (in Bohr magneton units) of Cr(CO)_6 is
- The correct stability order of the following resonance structures is H_2C = + N = - N (I) H_2 + C - N = - N (II) H_2 - C - + N N...
- For the reduction of NO_3^- ion in an aqueous solution, E° is +0.96 V. Values of E° for some metal ions are given below V^ 2+...
- Among the following, the state function(s) is(are)
- In a constant volume calorimeter, 3.5 g of a gas with molecular weight 28 was burnt in excess oxygen at 298.0 K. The temperature...
- The dissociation constant of a substituted benzoic acid at 25 °C is 1.0 10^ -4 . The pH of a 0.01 M solution of its sodium salt is
- The oxidation number of Mn in the product of alkaline oxidative fusion of MnO_2 is
- The number of water molecule(s) directly bonded to the metal centre in CuSO_4 5H_2O is
- The coordination number of Al in the crystalline state of AlCl_3 isNot in JEE Main or NEET syllabus
- The total number of cyclic structural as well as stereo isomers possible for a compound with the molecular formula C_5H_ 10 is
- The heating of NH_4NO_2 at 60–70 °C and NH_4NO_3 at 200–250 °C is associated with the formation of nitrogen containing compounds...
- The correct order of the wavelength maxima of the absorption band in the ultraviolet-visible region for the given complexes is
- Regarding the molecular orbital (MO) energy levels for homonuclear diatomic molecules, the INCORRECT statement(s) is(are)
- The pair(s) of diamagnetic ions is(are)
- In an electrochemical cell, dichromate ions in aqueous acidic medium are reduced to Cr³⁺. The current (in amperes) that flows...
- At 25 °C, the concentration of H⁺ ions in 1.00 10^ -3 M aqueous solution of a weak monobasic acid having acid dissociation...
- Molar volume (V_m) of a van der Waals gas can be calculated by expressing the van der Waals equation as a cubic equation with V_m...
- Considering ideal gas behavior, the expansion work done (in kJ) when 144 g of water is electrolyzed completely under constant...