Chemistry questions
29404 published questions with worked solutions.
- The number of radial and angular nodes in 4d orbital are, respectively
- Which of the following elements is considered as a metalloid?
- The role of depressants in 'Froth Floatation method' is toNot in JEE Main or NEET syllabus
- s-block element which cannot be qualitatively confirmed by the flame test isNot in JEE Main or NEET syllabus
- Which one of the following is an example of disproportionation reaction?
- The measured BOD values for four different water samples (A-D) are as follows: A = 3 ppm; B = 18 ppm; C = 21 ppm; D = 4 ppm. The...Not in JEE Main or NEET syllabus
- The correct order of nucleophilicity is
- Oxidation of toluene to benzaldehyde can be easily carried out with which of the following reagents?
- The reagent, from the following, which converts benzoic acid to benzaldehyde in one step is
- Which of the following is NOT an example of synthetic detergent?Not in JEE Main or NEET syllabus
- CNG is an important transportation fuel. When 100 g CNG is mixed with 208 g oxygen in vehicles, it leads to formation of CO_ 2...
- In a solid AB, A atoms are in ccp arrangement and B atoms occupy all the octahedral sites. If two atoms from the opposite faces...Not in JEE Main or NEET syllabus
- Amongst SF_ 4 , XeF_ 4 , CF_ 4 and H_ 2 O, the number of species with two lone pair of electrons is _____.
- The osmotic pressure exerted by a solution prepared by dissolving 2.0 g of protein of molar mass 60 kg mol^ -1 in 200 mL of water...
- Cu(s) + Sn^ 2+ (0.001M) Cu^ 2+ (0.01M) + Sn(s). The Gibbs free energy change for the above reaction at 298 K is x 10^ -1 kJ mol^...
- Catalyst A reduces the activation energy for a reaction by 10 kJ mol^ -1 at 300 K. The ratio of rate constants,...
- Reaction of [Co(H_ 2 O)_ 6 ]^ 2+ with excess ammonia and in the presence of oxygen results into a diamagnetic product. Number of...
- The moles of methane required to produce 81 g of water after complete combustion is _____ 10^ -2 mol. [nearest integer]
- A commercially sold conc. HCl is 35% HCl by mass. If the density of this commercial acid is 1.46 g/mL, the molarity of this...
- If the radius of the 3^ rd Bohr's orbit of hydrogen atom is r_ 3 and the radius of 4^ th Bohr's orbit is r_ 4 . Then :