Chemistry questions
29404 published questions with worked solutions.
- The following mechanism has been proposed for the reaction of NO with Br_2 to form NOBr : NO(g) + Br_2(g) NOBr_2(g) NOBr_2(g) +...
- In Langmuir's model of adsorption of a gas on a solid surfaceNot in JEE Main or NEET syllabus
- Which of the following chemical reactions depicts the oxidizing behaviour of H_2SO_4 ?
- What products are expected from the disproportionation reaction of hypochlorous acid?
- Lanthanoid contraction is caused due to
- The IUPAC name for the complex [Co(NO_2)(NH_3)_5]Cl_2 is
- Nickel (Z = 28) combines with a uninegative monodentate ligand X^- to form a paramagnetic complex [NiX_4]^ 2- . The number of...
- In Fe(CO)_5, the Fe - C bond possesses
- How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a Ca^ 2+ ion?
- HBr reacts with CH_2 = CH - OCH_3 under anhydrous conditions at room temperature to give
- CH_3Br + Nu^- CH_3 - Nu + Br^- The decreasing order of the rate of the above reaction with nucleophiles (Nu^-) A to D is [Nu^- =...
- Fluorobenzene (C_6H_5F) can be synthesized in the laboratory
- Reaction of trans-2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces
- Phenyl magnesium bromide reacts with methanol to give
- C_6H_5OH + CHCl_3 + NaOH o-(ONa)C_6H_4CHO The electrophile involved in the above reaction is
- The correct order of increasing acid strength of the compounds is (a) CH_3CO_2H (b) MeOCH_2CO_2H (c) (Me)_2CHCO_2H (d) CF_3CO_2H
- The term anomers of glucose refers to
- The density (in g mL^ -1 ) of a 3.60 M sulphuric acid solution that is 29% H_2SO_4 (Molar mass = 98 g mol^ -1 ) by mass will be
- Which of the following sets of quantum numbers represents the highest energy of an atom?
- The stability of dihalides of Si, Ge, Sn and Pb increases steadily in the sequence