19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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 …
Alkenes combine with carbon monoxide and hydrogen in presence of octacarbonyldicobalt as catalyst under high temperature and pressure to form
CH ,NH ,H O and HF are the example of
Which of the following statements regarding hydrides is not correct?
The formula of exhausted permutit is
Given below are the elements and the type of hydrides formed by them. Mark the incorrect match.
The order of reactivity of halogens towards hydrogen is
Which of the following is a true structure of H2O2 in solid phase ? (a) (b) (c) (d)
Which is most acidic of the following ?
Which of the following reacts with KMnO4 but does not react with AgNO3?
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.
Acetylene on treating with Cu2Cl2 gives
Which of the following organic compounds exhibit acidic character ? (a) (b) (c) (d)
Which of the following will give H2 gas with Na ?
Predict the product of the reaction 1-butyne with 2 equivalents of HCl (a) (b) (c) (d)
When propyne is treated with aqueous H2SO4 in presence of HgSO4, the major product is
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
In the following reaction, What is X ?
1-butyne on oxidation with hot alkaline KMnO4 would yield
Identify the compounds A and B in the following reaction sequence.
Alkynes are ...A... polar in nature. Here, A refers to
Acetylene does not react with
Choose the reagent to carry out the reaction.
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…