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The electrolysis of molten sodium hydride liberates hydrogen gas at the anode.

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Important Questions on Hydrogen

EASY
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
In the industrial production of which of the following, molecular hydrogen is obtained as a bye product.
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen

Ions are the current carriers in electrolytes.

If the aqueous solution of sodium chloride is subjected to electrolysis, what are the products obtained at each electrode?

MEDIUM
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
The highest industrial consumption of molecular hydrogen is to produce compound of element :
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
Which of the following statements about hydrogen is incorrect?
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
(i) The gas which is common in both 'water gas' and 'producer gas' is ________
(ii) Producer gas consists of a mixture of ________ and _______ gases in the ratio 2 : 1.
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
Given below are two statements:
Statement I : Nickel is being used as the catalyst for producing syn gas and edible fats.
Statement II : Silicon forms both electron rich and electron deficient hydrides.
In the light of the above statements, choose the most appropriate answer from the options given below:
HARD
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
Explain the laboratory preparation of hydrogen gas with the help of a labelled diagram.
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
Among Mg, Cu, Fe, Zn the metal that does not produce hydrogen gas in reaction with hydrochloric acid is
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
Which among the following pairs of substrates on reaction, does not evolve hydrogen gas.
MEDIUM
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
Write the chemical equation for industrial production of dihydrogen gas and write its two uses.
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
The total number of isotopes of hydrogen and number of radioactive isotopes among them, respectively, are
MEDIUM
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
Which of the following is water-gas shift reaction?
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
Which physical property of di-hydrogen is wrong?
MEDIUM
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
High purity >99.95% dihydrogen is obtained by
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
The most abundant elements by mass in the body of a healthy human adult are:

Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%). The weight which a 75kg person would gain if all  1H atoms are replaced by  2H atoms is:
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen

The equation that represents the water-gas shift reaction is :

EASY
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
The synonym for water gas when used in the production of methanol is:
HARD
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen

Which gas is evolved at the anode during the electrolysis of KHF2 in anhydrous HF?

EASY
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
Given below are two statements :
Statement I : The process of producing syn-gas is called gasification of coal.
Statement II : The composition of syn-gas is CO+CO2+H2(1:1:1).
In the light of the above statements, choose the most appropriate answer from the options given below :
EASY
Chemistry>Inorganic Chemistry>Hydrogen>Preparation of Dihydrogen
Identify the reaction which does not liberate hydrogen