Chemistry questions
29404 published questions with worked solutions.
- Match List I and List II List I (Vitamin): A. Vitamin A B. Thiamine C. Ascorbic acid D. Riboflavin List II (Deficiency disease):...
- The difference between electron gain enthalpies will be maximum between :
- The possibility of photochemical smog formation is more atNot in JEE Main or NEET syllabus
- Match List I with List II List I (Oxide): A. N_2O_4 B. NO_2 C. N_2O_5 D. N_2O List II (Type of bond): I. 1 N = O bond II. 1 N - O...
- Strong reducing and oxidizing agents among the following , respectively, are
- For the reaction RCH_2Br+I^- [major] Acetone RCH_2I+Br^- The correct statement is
- Polymer used in orlon is:Not in JEE Main or NEET syllabus
- For a concentrated solution of a weak electrolyte (K_ eq = equilibrium constant) A_2B_3 of concentration 'c', the degree of...
- Match List I with List II List-I (Element detected): A. Nitrogen B. Sulphur C. Phosphorus D. Halogen List-II (Reagent...
- Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: The spin only...
- Mass of Urea (NH_2CONH_2) required to be dissolved in 1000 g of water in order to reduce the vapour pressure of water by 25% is...
- The value of log K for the reaction A B at 298 K is ________. (Nearest integer) Given : H^0 = –54.07 kJ mol^ -1 S^0 = 10 JK^ -1...
- In ammonium – phosphomolybdate, the oxidation state of Mo is + ________
- Number of bromo derivatives obtained on treating ethane with excess of Br_2 in diffused sunlight is ________
- For the adsorption of hydrogen on platinum, the activation energy is 30 kJ mol^ -1 and for the adsorption of hydrogen on nickel,...
- The number of species from the following which have square pyramidal structure is________ PF_5, BrF_4^-, IF_5, BrF_5, XeOF_4,...
- If 5 moles of BaCl_2 is mixed with 2 moles of Na_3PO_4, the maximum number of moles of Ba_3(PO_4)_2 formed is________ (Nearest...
- Number of ambidentate ligands in a representative metal complex [M(en)(SCN)_4] is____________. [en = ethylenediamine]
- The wavelength of an electron of kinetic energy 4.50 10^ -29 J is ________ 10^ -5 m. (Nearest integer) Given: mass of electron is...
- Consider the graph of Gibbs free energy G vs extent of reaction. The number of statement/s from the following which are true with...