Hydrogen Test -...

Which of the following statement(s) is/are correct about the water-gas shift reaction which is used in the commercial preparation of hydrogen gas?

Half litre each of three samples of $$H_{2}O_{2}$$ labelled $$10$$ volume, $$15$$ volume and $$20$$ volume are mixed and then diluted with equal volume of water. The relative strength of resultant $$H_{2}O_{2}$$ solution is:

If $$10$$ ml of $$H_2O_2$$ solution requires $$25$$ ml of $$\dfrac{\text{N}}{20}\: KMnO_{4}$$ for complete oxidation in acidic medium, then the mass (in g) of available $$O_{2}$$ per litre present in the solution is:

$$25$$ ml of $$H_{2}O_{2}$$ solution were added to excess of acidified $$KI$$ solution. The iodine so liberated required $$20$$ ml of $$0.1\: \text{N}$$ $$Na_{2}S_{2}O_{3}$$ for titration. Calculate strength of $$H_2O_2$$ in terms of normality and percentage?

Peroxoborate in aqueous solution provides:

An experimental set up is shown in the figure. Identify the metal X and gas Y respectively in the figure.

When a substance A reacts with water, it produces a combustible gas B and a solution of substance C in water. D reacts with this solution of C and produces the same gas B on warming. D can also produce gas B on reaction with dilute $$ \displaystyle H_{2}SO_{4}$$. A imparts a deep golden yellow colour to smokeless flame. A, B, C and D respectively are:

A teacher one day pointed out to his students the peculiar fact that water is a unique liquid that freezes exactly at $$0^oC$$ and boils exactly at $$100^oC$$. He asked the students to find the correct statement based on this fact.

By which process $$H_{2}O_{2}$$ does not form?

Which of the following produces hydrolith with dihydrogen?