19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Hydrogen is prepared by the reaction of
Zn 2NaOH aq X H -> What is (X) in the above reaction?
The major compounds of water gas (or synthesis gas or syngas) which are used for the synthesis of methanol and a number of hydrocarbons are (a) CO H (b) CO H (c) CO N (d) CO CO H
Hydrogen is not obtained when zinc reacts with
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
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?
Syngas is a mixture of
Very pure hydrogen (99.9%) can be made by which of the following processes?
Pure nascent hydrogen is best obtained by
Which of the following metals does not liberate hydrogen from acids?
Which of the following metals will react with NaOH and KOH to liberate hydrogen gas?
The process of production of syngas coal is quite common these days. The production of syngas from coal is called
Water gas is mixed with steam and the mixture is passed over heated Fe2O3 in presence of Cr2O3. The mixture when passed in water dissolves CO2 and dihydrogen left undissolved is collected. This method of preparation o…
In context with the industrial preparation of hydrogen from water gas (CO + H2), which of the following is the correct statement?
Which of the following statement is correct regarding properties of hydrogen?
Hydrogen does not possess the metallic characteristics under normal conditions because
Why does H+ ion always get associated with other atoms or molecules?
Name the gas, which is colourless, odourless, tasteless, combustible, lighter than air and insoluble in water.
The chemical reactions of dihydrogen are accomplished by
Hydrogenation of vegetable oils using nickel as a catalyst gives edible fats which is/are known as
Which of the following gas in insoluble in water?
ZnO Cu CO H ->product. Identify the product formed in the given reaction. (a) CH COOH (b) CO (c) C O (d) CH OH