19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Pure nascent hydrogen is best obtained by
Syngas is a mixture of
Which of the following metals does not liberate hydrogen from acids?
Hydrogen is prepared on large scale for industrial use
Which of the following represent laboratory preparation of dihydrogen?
The production of dihydrogen obtained from coal gasification can be increased by reacting carbon monoxide of syngas mixture with steam in presence of a catalyst iron chromate. What is this process called?
Which of the following metals will react with NaOH and KOH to liberate hydrogen gas?
Which of the following reactions increases the production of dihydrogen from synthesis gas? (a) 1270K Ni CH g H O CO g 3H g -> (b) 1270K C g H O CO g H g -> (c) 673K catalyst CO g H O CO g H g -> (d) 12…
All the reaction between following pairs will produce hydrogen gas, except
The process of production of syngas coal is quite common these days. The production of syngas from coal is called
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 …
Arrange the below compounds in the decreasing order of reactivity towards HBr:
Give the major product of the following reaction 3,3-dimethyl-1-butene + HCl Major
When one mole of an alkene on ozonolysis produces 2 moles of propanone, the alkene is
Which alkene on ozonolysis gives CH3CH2CHO and CH3COCH3?
2-phenyl propene on acidic hydration, gives
An alkene, on ozonolysis gives formaldehyde and acetaldehyde. The alkene is
On catalytic reduction with H2/Pt how many alkenes will give n-butane?
The addition of HBr to 2-pentene gives
In the presence of peroxide, hydrogen chloride and hydrogen iodide do not give anti-Markownikoff’s addition to alkenes because
In the following sequence of reactions, the alkene gives the compound B. Identify B. CH3 – CH = CH – CH3 O H O/Zn A B -> ->
Reaction of HBr with propene in the presence of peroxide gives
Peroxide H C CH CH HCl ->Product, the intermediate of reaction is : (a) CH CH CH (b) CH CH CH (c) CH CH CH (d) CH CH CH
An alkene on vigorous oxidation with KMnO4 gives only acetic acid. The alkene is
Products of the following reaction ? i O3 Me C=CHCH ii CH S 3 2 -> are