19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Dihydrogen, under certain reaction condition, combines with almost all elements except noble gases to form binary compounds. The binary compounds are called
Which gas is produced when calcium nitride (Ca3N2) is hydrolysed by water?
Which of the following metals directly combine with hydrogen gas to give a hydride?
Which of the following hydrides is electron deficient?
Which property of hydrogen is shown by the following reactions ? (i) Fe3O4 + 4H2 -> 3Fe + 4H2O (ii) CO + H2 -> O ZnO Cr CH3OH
Which of the following statements regarding hydrides is not correct?
Given below are the elements and the type of hydrides formed by them. Mark the incorrect match.
On moving from left to right in a period what is the order of acidic character of hydrides?
In context with the industrial preparation of hydrogen from water gas (CO + H2), which of the following is the correct statement?
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 …
What is the trend of boiling points of hydrides of N, O and F?
From group 6 only one metal forms hydride. This metal is
In complex hydrides, hydride ions act as ligand and are coordinated to metal ions. These hydrides are good reducing agents. Which of the following hydrides is not complex hydride ?
Assertion (A): The crystalline form of water is ice. Reason (R): At atmospheric pressure ice crystallizes in the hexagonal form but at very low temperature it condenses to the cubic form.
What is meant by demineralized water ?
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