19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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
Zn 2NaOH aq X H -> What is (X) in the above reaction?
Hydrogen is prepared by the reaction of
In what respect electronic configuration of hydrogen and halogens are similar?
In which of the following properties hydrogen does not show similarity with alkali metals?
Which of the following is an atom of tritium? (a) (b) (c) (d)
The isotopes of hydrogen have different physical properties due to difference in mass. They have almost same chemical properties with a difference in their rates of reactions which is mainly due to
Deuterium is
Which of the following is not an isotope of hydrogen?
Which of the elements is present in plant, animal tissues, carbohydrates, proteins, hydrides including hydrocarbons and many other compounds?
Which of the following explanations justifies not placing hydrogen in either the group of alkali metals or halogens?
Which of the following is/are true statement(s) regarding characteristic of hydrogen? I. Hydrogen resembles alkali metals due to the similar outer electronic configuration ns . II. Hydrogen resembles halogens due to …
Assertion (A): Hydrogen is the first element in the periodic table. Reason (R): It has electronic configuration 1s .
Which of the following statement regarding protium, deuterium and tritium is not correct?