Chemistry questions
29404 published questions with worked solutions.
- Match List-I and List-II. List-I (Natural Amino acid): (A) Arginine (B) Aspartic acid (C) Asparagine (D) Alanine List-II (One...
- Number of crystal systems from the following where body centred unit cell can be found, is _______. Cubic, tetragonal,...Not in JEE Main or NEET syllabus
- The number of species having a square planar shape from the following is XeF_4, SF_4, SiF_4, BF_4^-, BrF_4^-, [Cu(NH_3)_4]^ 2+ ,...
- The equilibrium composition for the reaction PCl_3+Cl_2 PCl_5 at 298 K is given below: [PCl_3]_ eq = 0.2 mol L^ -1 , [Cl_2]_ eq =...
- Consider the following pairs of solution which will be isotonic at the same temperature. The number of pairs of solutions is/are...
- The number of colloidal systems from the following, which will have 'liquid' as the dispersion medium, is ______. Gem stones,...Not in JEE Main or NEET syllabus
- Number of isomeric aromatic amines with molecular formula C_8H_ 11 N, which can be synthesized by Gabriel Phthalimide synthesis...
- Consider the following data Heat of combustion of H_2(g) = –241.8 kJ mol^ -1 Heat of combustion of C(s) = –393.5 kJ mol^ -1 Heat...
- The standard reduction potential at 295 K for the following half cells are given below: NO_3^-+4H^++3e^- NO(g)+2H_2O E^0 = 0.97...
- In an ice crystal, each water molecule is hydrogen bonded to ________ neighbouring molecules.
- The synthesis of 3-octyne is achieved by adding a bromoalkane into a mixture of sodium amide and an alkyne. The bromoalkane and...
- The bond energy (in kcal mol^ -1 ) of a C–C single bond is approximately
- Among the following, the intensive property is (properties are)
- Aqueous solutions of HNO_3 , KOH, CH_3COOH , and CH_3COONa of identical concentrations are provided. The pair(s) of solutions...
- The total number of cyclic isomers possible for a hydrocarbon with the molecular formula C_4H_6 is
- Based on VSEPR theory, the number of 90 degree F–Br–F angles in BrF_5 is
- The concentration of R in the reaction R P was measured as a function of time and the following data is obtained: array...
- Assuming that Hund's rule is violated, the bond order and magnetic nature of the diatomic molecule B_2 is
- Total number of geometrical isomers for the complex [RhCl(CO)(PPh_3)(NH_3)] is
- Among the following, the number of elements showing only one non-zero oxidation state is O, Cl, F, N, P, Sn, Tl, Na, Ti