Quiz for Properties

Q1: Which of the following isotopes of hydrogen is radioactive?

A. Protium B. Deuterium C. Tritium D. Hydron

Q2: Which form of hydrogen is used in nuclear reactors as a moderator?

A. Liquid hydrogen B. Tritium C. Protium D. Heavy water (D₂O)

Q3: Which of the following has the highest bond dissociation enthalpy?

A. O₂ B. H₂ C. N₂ D. Cl₂

Q4: Hydrogen resembles alkali metals because it:

A. Forms a cation (H⁺) B. Has a valency of two C. Forms a basic oxide D. Is a noble gas

Q5: Which of the following is NOT a property of hydrogen gas?

A. Colourless B. Odourless C. Highly soluble in water D. Highly combustible

Q6: The oxidation number of hydrogen is +1 in:

A. H₂ B. NaH C. HCl D. LiH

Q7: Which is the lightest element in the periodic table?

A. Helium B. Hydrogen C. Oxygen D. Nitrogen

Q8: Hydrogen gas burns in air to form:

A. Hydrogen peroxide B. Water C. Oxygen D. Hydroxide ions

Q9: Which compound contains hydrogen in -1 oxidation state?

A. H₂O B. HCl C. NaH D. NH₃

Q10: Which of the following is not an isotope of hydrogen?

A. Protium B. Deuterium C. Tritium D. Hydronium

Q11: Hydrogen is placed separately in the periodic table because:

A. It is non-metal B. It resembles both alkali metals and halogens C. It is a gas D. It forms water

Q12: Which property makes hydrogen fuel eco-friendly?

A. High density B. Zero emission of CO₂ C. Toxic combustion products D. High cost

Q13: Hydrogen is least reactive at:

A. High temperature B. Presence of catalyst C. Room temperature D. UV light exposure

Q14: Which of these metals forms ionic hydride with hydrogen?

A. Copper B. Iron C. Sodium D. Zinc

Q15: Which property of hydrogen supports the Big Bang Theory?

A. Odourless nature B. High bond enthalpy C. Abundance in the universe D. Toxicity

Q16: What is the oxidation number of hydrogen in H₂O₂?

A. +1 B. 0 C. -1 D. Varies

Q17: Hydrogen reacts with nitrogen to form:

A. Ammonia B. Hydrazine C. Urea D. Amide

Q18: Hydrogen reacts with metals to form:

A. Hydronium ion B. Hydrides C. Hydroxides D. Carbides

Q19: Which of the following is a reducing agent?

A. O₂ B. H₂ C. CO₂ D. HCl

Q20: Which form of hydrogen is used in weather balloons?

A. Liquid hydrogen B. Heavy hydrogen C. Hydrogen gas D. Hydrogen peroxide