Chemistry questions
29404 published questions with worked solutions.
- Consider a titration of potassium dichromate solution with acidified Mohr's salt solution using diphenylamine as indicator. The...
- A solution of a metal ion when treated with KI gives a red precipitate which dissolves in excess KI to give a colourless...
- The number of stereoisomers obtained by bromination of trans-2-butene is
- Consider a reaction aG + bH → Products. When concentration of both the reactants G and H is doubled, the rate increases by eight...
- STATEMENT-1 : Alkali metals dissolve in liquid ammonia to give blue solutions. because STATEMENT-2 : Alkali metals in liquid...Not in JEE Main or NEET syllabus
- STATEMENT-1 : Glucose gives a reddish-brown precipitate with Fehling's solution. because STATEMENT-2 : Reaction of glucose with...
- STATEMENT-1 : Molecules that are not superimposable on their mirror images are chiral. because STATEMENT-2 : All chiral molecules...
- Under the same reaction conditions, initial concentration of 1.386 mol dm⁻³ of a substance becomes half in 40 seconds and 20...
- Both [Ni(CO)_4] and [Ni(CN)_4]^ 2- are diamagnetic. The hybridisations of nickel in these complexes, respectively, are
- The IUPAC name of [Ni(NH_3)_4][NiCl_4] is
- Electrolysis of dilute aqueous NaCl solution was carried out by passing 10 milli ampere current. The time required to liberate...
- Among the following, the surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambient...Not in JEE Main or NEET syllabus
- Solubility product constants (K_ sp ) of salts of types MX, MX_2 and M_3X at temperature 'T' are 4.0 10^ -8 , 3.2 10^ -14 and 2.7...
- STATEMENT-1 : Aniline on reaction with NaNO_2/HCl at 0 °C followed by coupling with β-naphthol gives a dark blue coloured...
- STATEMENT-1 : [Fe(H_2O)_5NO]SO_4 is paramagnetic. and STATEMENT-2 : The Fe in [Fe(H_2O)_5NO]SO_4 has three unpaired electrons.
- STATEMENT-1 : The geometrical isomers of the complex [M(NH_3)_4Cl_2] are optically inactive. and STATEMENT-2 : Both geometrical...
- Given that the abundances of isotopes ⁵⁴Fe, ⁵⁶Fe and ⁵⁷Fe are 5%, 90% and 5%, respectively, the atomic mass of Fe is
- The Henry's law constant for the solubility of N_2 gas in water at 298 K is 1.0 10^5 atm. The mole fraction of N_2 in air is 0.8....
- The reaction of P_4 with X leads selectively to P_4O_6 . The X is
- Among cellulose, poly(vinyl chloride), nylon and natural rubber, the polymer in which the intermolecular force of attraction is...Not in JEE Main or NEET syllabus