Chemistry questions
29404 published questions with worked solutions.
- The number of bonds between sulphur and oxygen atoms in S_2O_8^ 2- and the number of bonds between sulphur and sulphur atoms in...
- Which of the following statement is not true for glucose ?
- The first ionization energy (in kJ/mol) of Na, Mg, Al and Si respectively, are :
- The volume (in mL) of 0.125 M AgNO_3 required to quantitatively precipitate chloride ions in 0.3 g of [ Co(NH_3)_6 ] Cl_3 is...
- The number of chiral centres in penicillin is ––––––-
- What would be the electrode potential for the given half cell reaction at pH = 5 ? 2H_2O O_2+4H^ +4e^- ; E^0_ red = 1.23 V (R =...
- The increasing order of the atomic radii of the following elements is : (a) C (b) O (c) F (d) Cl (e) Br
- For the following Assertion and Reason, the correct option is : Assertion : The pH of water increase with increase in...
- White phosphorus on reaction with concentrated NaOH solution in an inert atmosphere of CO_2 gives phosphine and compound (X). (X)...
- Among (a) – (d), the complexes that can display geometrical isomerism are : (a) [ Pt(NH_3)_3Cl ]^+ (b) [ Pt(NH_3)Cl_5 ]^- (c) [...
- For the following Assertion and Reason, the correct option is : Assertion : For hydrogenation reactions, the catalytic activity...Not in JEE Main or NEET syllabus
- Among the reactions (a)-(d), the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are :...Not in JEE Main or NEET syllabus
- A metal (A) on heating in nitrogen gas gives compound B. B on treatment with H_2O gives a colourless gas which when passed...
- Two monomers in maltose are :
- The correct order of the calculated spin-only magnetic moments of complexes (A) to (D) is : (A) Ni(CO)_4 (B) [ Ni(H_2O)_6 ] Cl_2...
- Hydrogen has three isotopes (A), (B) and (C). If the number of neutron(s) in (A), (B) and (C) respectively, are (x), (y) and (z),...
- Arrange the following bonds according to their average bond energies in descending order: C–Cl, C–Br, C–F, C–I
- Preparation of Bakelite proceeds via reactions :
- The radius of the second Bohr orbit, in terms of the Bohr radius, a_0, in Li^ 2+ is :
- In the following sequence of reactions the maximum number of atoms present in molecule 'C' in one plane is ________. A [ Cu tube...