Chemistry questions
29404 published questions with worked solutions.
- Match List -I with List -II : List I (Monomer Unit): (a) Caprolactam (b) 2-Chloro-1,3-butadiene (c) Isoperene (d) Acrylonitrile...Not in JEE Main or NEET syllabus
- The electrode potential of M / M of 3d-series elements shows positive value of :
- 4.5 g of compound A (MW = 90) was used to make 250 mL of its aqueous solution. The molarity of the solution in M is x 10^ -1 ....
- At 1990 K and 1 atm pressure, there are equal number of Cl_2 molecules and Cl atoms in the reaction mixture. The value K_P for...
- Number of amphoteric compound among the following is __________ (A) BeO (B) BaO (C) Be(OH)2 (D) Sr(OH)2Not in JEE Main or NEET syllabus
- The reaction of sulphur in alkaline medium is the below S_ 8(S) +aOH^-_ (aq) bS^ 2- _ (aq) +cS_2O_3^ 2- _ (aq) +dH_2O_ (l) . The...
- For the reaction A(g) (B)(g), the value of he equilibrium constant at 300 K and 1 atm is equal to 100.0. The value of _rG for the...
- The stepwise formation of [Cu(NH_3)_4]^ 2+ is given below Cu^ 2+ +NH_3 [Cu(NH_3)]^ 2+ ... The value of stability constants K1,...
- The coordination number of an atom in a bodycentered cubic structure is ________. [Assume that the lattice is made up of atoms.]Not in JEE Main or NEET syllabus
- Gaseous cyclobutene isomerizes to butadiene in a first order process which has a 'k' value of 3.3 10^ -4 s^ -1 at 153°C. The time...
- At 25°C, the dissociation constant of a base, BOH, is 1.0 x 10^ -12 . The concentration of hydroxyl ions in 0.01 M aqueous...
- Which one of the following pairs represents stereoisomerism ?
- The correct order in which the O — O bond length increases in the following is :
- The mass of carbon anode consumed (giving only carbondioxide) in the production of 270 kg of aluminium metal from bauxite by the...Not in JEE Main or NEET syllabus
- The number of moles of KMnO_ 4 reduced by one mole of KI in alkaline medium is :
- Which of the following molecules has trigonal planar geometry ?
- The aqueous solution containing which one of the following ions will be colourless ? (Atomic no. : Sc = 21, Fe = 26, Ti = 22, Mn...
- Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is...
- A reaction occurs spontaneously if :
- The correct sequence of increasing covalent character is represented by :