Chemistry Question Bank

Alkenes combine with carbon monoxide and hydrogen in presence of octacarbonyldicobalt as catalyst under high temperature and pressure to form

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 …

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…

The process of production of syngas coal is quite common these days. The production of syngas from coal is called

Which of the following metals will react with NaOH and KOH to liberate hydrogen gas?

Which of the following metals does not liberate hydrogen from acids?

Pure nascent hydrogen is best obtained by

Very pure hydrogen (99.9%) can be made by which of the following processes?

Syngas is a mixture of

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 represent laboratory preparation of dihydrogen?

Hydrogen is prepared on large scale for industrial use

All the reaction between following pairs will produce hydrogen gas, except

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…

Hydrogen is not obtained when zinc reacts with

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

Like alkali metals, hydrogen forms I. Oxides and oxyacids. II. Halides and interhalides. III. Oxides, halides and sulphide.

Hydrogen has resemblance to alkali metals as well as with halogens. The reason is that

In elemental form, hydrogen exists as

In atomic form, hydrogen consists of…….X…… proton and ……..Y…… electron. X and Y are

Point out the element which has simplest atomic structure among all the elements around us in nature.

The laboratory method for the preparation of H2O2 is by (UP CPMT 2014)

Hydrogen resembles halogens in many respects for which several factors are responsible. Of the following factors, which one is the most important in this respect?

Which of the following statement regarding protium, deuterium and tritium is not correct?

Assertion (A): Hydrogen is the first element in the periodic table. Reason (R): It has electronic configuration 1s .