Mock Test 1 — Hydrogen

Hydrogen has isotopes:

Tritium is:

The hydride formed by sodium is:

Heavy water is used in nuclear reactor as:

Ortho-para hydrogen difference is due to:

Soap forms scum in hard water due to:

The structure of $H_2O_2$ is:

Most reactive metal with H₂O at room temperature:

Hydrogen does NOT react readily with:

The pH of pure water at $25°$C:

Number of stable isotopes of hydrogen:

Number of moles of H⁻ in $1$ mole of NaH:

Vol strength of $1.6$ M H₂O₂:

Assertion (A): Hydrogen can be placed in both Group 1 and Group 17 of the periodic table. Reason (R): It has similarities with both alkali metals (ns¹ configuration) and halogens (one electron short of noble gas configuration).

Assertion (A): $H_2O_2$ acts as both oxidizing and reducing agent. Reason (R): Oxygen in $H_2O_2$ has $-1$ oxidation state, intermediate between $-2$ and $0$.