Chemistry questions
29404 published questions with worked solutions.
- For 'invert sugar', the correct statement(s) is(are) (Given: specific rotations of (+)-sucrose, (+)-maltose, L-(–)-glucose and...
- The correct statement(s) about the oxoacids, HClO_4 and HClO, is(are)
- The colour of the X_2 molecules of group 17 elements changes gradually from yellow to violet down the group. This is due to
- Addition of excess aqueous ammonia to a pink coloured aqueous solution of MCl_2 6H_2O (**X**) and NH_4Cl gives an octahedral...
- A crystalline solid of a pure substance has a face-centred cubic structure with a cell edge of 400 pm. If the density of the...Not in JEE Main or NEET syllabus
- The conductance of a 0.0015 M aqueous solution of a weak monobasic acid was determined by using a conductivity cell consisting of...
- The sum of the number of lone pairs of electrons on each central atom in the following species is [TeBr_6]^ 2- , [BrF_2]^+ ,...
- Among H_2 , He_2^+ , Li_2 , Be_2 , B_2 , C_2 , N_2 , O_2^- , and F_2 , the number of diamagnetic species is (Atomic numbers: H =...
- The standard state Gibbs free energies of formation of C(graphite) and C(diamond) at T = 298 K are _fG^o[ C(graphite) ]=0 kJ mol...
- Which of the following combination will produce H_2 gas?Not in JEE Main or NEET syllabus
- The order of the oxidation state of the phosphorus atom in H_3PO_2 , H_3PO_4 , H_3PO_3 , and H_4P_2O_6 is
- For a reaction taking place in a container in equilibrium with its surroundings, the effect of temperature on its equilibrium...
- In a bimolecular reaction, the steric factor P was experimentally determined to be 4.5. The correct option(s) among the following...
- The option(s) with only amphoteric oxides is(are)
- The correct statement(s) regarding the binary transition metal carbonyl compounds is (are) (Atomic numbers: Fe = 26, Ni = 28)
- Based on the compounds of group 15 elements, the correct statement(s) is (are)
- Among the species given below, the total number of diamagnetic species is _____. H atom, NO_2 monomer, O_2^- (superoxide),...
- The ammonia prepared by treating ammonium sulphate with calcium hydroxide is completely used by NiCl_2.6H_2O to form a stable...
- Consider an ionic solid **MX** with NaCl structure. Construct a new structure (**Z**) whose unit cell is constructed from the...Not in JEE Main or NEET syllabus
- For the electrochemical cell, Mg (s) ,| , Mg^ 2+ (aq,1 M ) , | , Cu^ 2+ (aq,1 M ) ,| , Cu (s) the standard emf of the cell is...