Chemistry questions
29404 published questions with worked solutions.
- In the coordination compound, K_4[Ni(CN)_4], the oxidation state of nickel is
- On mixing a certain alkane with chlorine and irradiating it with ultravioletlight, it forms only one monochloroalkane. This...
- An ether is more volatile than an alcohol having the same molecular formula. This is due to
- During dehydration of alcohols to alkenes by heating with conc. H_2SO_4 the initiation step is
- The reaction of chloroform with alcoholic KOH and p-toluidine forms
- When CH_2 = CH - COOH is reduced with LiAlH_4, the compound obtained will be
- Ethyl isocyanide on hydrolysis in acidic medium generates
- The correct order of increasing basic nature for the bases NH_3, CH_3NH_2 and (CH_3)_2NH is
- Complete hydrolysis of cellulose gives
- 6.02 10^ 20 molecules of urea are present in 100ml of its solution. The concentration of urea solution is
- To neutralize completely 20 mL of 0.1M aqueous solution of phosphorous acid (H_3PO_3), the volume of 0.1M aqueous KOH solution...
- Which of the following sets of quantum numbers is correct for an electron in 4f orbital?
- Which one the following sets of ions represents the collection of isoelectronic species?
- Which one the following ions has the highest value of ionic radius?
- The correct order of bond angles (smallest first) in H_2S, NH_3, BF_3 and SiH_4 is
- The bond order in NO is 2.5 while that in NO^+ is 3 . Which of the following statements is true for these two species?
- The states of hybridization of boron and oxygen atoms in boric acid (H_3BO_3) are respectively
- Which one of the following has the regular tetrahedral structure?
- The maximum number of 90^ angles between bond pair of electrons is observed in
- Which one the following does not have sp^2 hybridized carbon?