19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which property of hydrogen is shown by the following reactions ? (i) Fe3O4 + 4H2 -> 3Fe + 4H2O (ii) CO + H2 -> O ZnO Cr CH3OH
Dihydrogen, under certain reaction condition, combines with almost all elements except noble gases to form binary compounds. The binary compounds are called
Earlier, it was thought that in the non-stoichiometric hydrides, hydrogen occupies interstices in the metal lattice producing distortion without any change in its type. Consequently, they were termed as ………X…….. Here,…
On reaction with water, which of the following does not produce any hydride? (a) CaH (b) Be C (c) Mg N (d) Ca P
The order of reactivity of halogens towards hydrogen is
Ionic hydrides react with water to give
If a mole of hydrogen molecule is heated to a high temperature, then which of the following reaction take place ? (a) 2 g g g H 436kJmol H H -> (b) 2 g 2 g 2H 820kJmol 2H -> (c) 2 g 2 g g g H H 436kJmol …
Metal hydrides may be ionic, covalent or molecular in nature. Among LiH,NaH,KH,RbH,CsH the correct order of increasing ionic character is
1-butyne on oxidation with hot alkaline KMnO4 would yield
Choose the reagent to carry out the reaction.
Which is most acidic of the following ?
Which of the following reacts with KMnO4 but does not react with AgNO3?
In the following reaction, What is X ?
Which of the following will give H2 gas with Na ?
Products of the following reaction (i) O3 CH C C – CH CH ........ are (ii) Hydrolysis -> (a) CH CHO CH CH CHO (b) CH COOH CH COCH (c) CH COOH HOOC CH CH x (d) CH COOH CO
Acetylene on treating with Cu2Cl2 gives
Alkynes are ...A... polar in nature. Here, A refers to
Acetylene does not react with
When propyne is treated with aqueous H2SO4 in presence of HgSO4, the major product is
Which of the following organic compounds exhibit acidic character ? (a) (b) (c) (d)
Predict the product of the reaction 1-butyne with 2 equivalents of HCl (a) (b) (c) (d)
Identify a reagent from the following list which can easily distinguish between 1-butyne and 2-butyne.
Any ring system will be ‘aromatic’ in nature if it possesses: I. planarity. II. complete delocalisation of the electrons in the ring. III. it follows Huckel Rule. Choose the correct option.
Which of the following statement(s) is/are correct regarding structure of benzene? I. All the six carbons in benzene are sp2 hybridised. II. sp2 hybridised orbital of carbon combines with another sp2 hybridised orbi…
X-ray diffraction study of benzene reveals that I. It is a planar molecule. II. C–C bond lengths are of the same order which is intermediate between C–C single bond and C–C double bond, III. Benzene is reluctant to…