19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
From group 6 only one metal forms hydride. This metal is
What is the trend of boiling points of hydrides of N, O and F?
Dihydrogen forms three types of hydrides. (i) hydrides are formed by alkali metals and alkaline earth metals. (ii) hydrides are formed by non-metals and (iii) hydrides are formed by d and f-block elements at elevated …
On moving from left to right in a period what is the order of acidic character of hydrides?
Non-stoichiometric hydrides are produced by
Given below are the elements and the type of hydrides formed by them. Mark the incorrect match.
Which of the following statements regarding hydrides is not correct?
Carbon hydride of the type, CnH2n+2 do not act as Lewis acid or Lewis base. They behave as normal covalent hydrides because
Which of the following hydrides is electron deficient?
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…
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