Solve this multiple-choice question and choose the correct option.

Reactivity of metals with dilute acids: Which metal among the following does not liberate hydrogen gas on treatment with dilute HCl? Use the metal activity series relative to hydrogen. Choose the correct option.

Difficulty: Easy

Correct Answer: Ag

Explanation:

Given data

Dilute HCl reacts with metals above hydrogen in the reactivity series to release H₂.

Concept/ApproachZinc, iron, and calcium are above hydrogen and liberate H₂. Silver is below hydrogen and does not react with dilute HCl to produce hydrogen gas.

Final AnswerAg

← Previous Question Next Question→

More Questions from Chemistry

Nuclear forces (binding the nucleus): Which nuclear particles mediate the strong force that holds nucleons together in older (Yukawa) models? Focus on the historical concept of force carriers inside the nucleus. Choose the correct option.
Ore identification (iron): Magnetite is an important iron ore—select its correct chemical formula from the options provided. Match the common name ‘‘magnetite’’ with its standard oxide formula. Choose the correct option.
Acid–base species: Identify the hydronium ion among the following chemical species. Recall that hydronium is protonated water (the actual carrier of ‘‘H⁺’’ in aqueous solution). Choose the correct option.
Atomic numbers vs mass numbers: The mass number (A) of an atom equals what count of subatomic particles? Relate A to the composition of the nucleus (protons and neutrons). Choose the correct option.
Indian mineral resources: Which ore is found in abundance in India compared to the other options listed? Consider well-known placer deposits and strategic reserves in India. Choose the correct option.
Applied X-ray detection: Which of the following items is particularly amenable to detection by soft X-rays (lower energy, higher absorption by light elements)? Consider penetration and contrast for organic materials. Choose the correct option.
Polymers (processing behavior): A material that sets into a permanently infusible shape when heated and pressed is called what? Differentiate between thermoplastic (reversible softening) and crosslinked systems. Choose the correct option.
Fuels (antiknock rating): The octane number scale assigns a value of zero to which reference fuel? Recall the two primary standards used to define octane numbers. Choose the correct option.
Water treatment (permanent hardness): Which method cannot remove permanent hardness due to Ca/Mg chlorides/sulfates? Identify the technique ineffective against non-bicarbonate hardness. Choose the correct option.
Allotropy of phosphorus: What is the molecular formula of elemental (white) phosphorus as commonly encountered? Recall the tetra-atomic molecular form of white phosphorus. Choose the correct option.

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion