Explanation

"Barren field" is a metaphor comparing life to a lifeless, empty field without using "like" or "as".

A metaphor implies a resemblance directly, suggesting life feels empty or unproductive.

Explanation

"By the hunter" is a prepositional phrase because it begins with the preposition "by" and indicates the doer of the action.

It answers the question "Who killed the lion?" and provides additional information.

Explanation

Indicators are colored organic compounds that change color depending on the pH of the solution.

Common examples include litmus, phenolphthalein, and methyl orange.

Explanation

In NH₄⁺, nitrogen has an oxidation state of –3 (typical for ammonia-like groups).

In NO₃⁻, nitrogen has an oxidation state of +5 due to its bonding with three oxygen atoms.

Explanation

Prussian blue is formed by a complex reaction involving Fe³⁺ (ferric) and [Fe(CN)₆]⁴⁻ (ferrocyanide) ions.

Both Ferric hexa cyano ferrate (II) and Iron (III) hexa cyano ferrate (II) describe the same compound responsible for the Prussian blue color.

Explanation

Compassionate means showing kindness, care, and a desire to help others.

Sympathetic means showing understanding and care for someone else's suffering.

Compassionate means شفقت ، نگہداشت ، اور دوسروں کی مدد کرنے کی خواہش ظاہر کرنا

Sympathetic means کسی اور کی تکلیف کی تفہیم اور دیکھ بھال کرنا

Explanation

A polyprotic acid is an acid that can donate more than one proton (H⁺) per molecule.

1. H₃PO₄ (Phosphoric acid) → Triprotic acid (can donate 3 H⁺ ions)
2. HCN (Hydrocyanic acid) → Monoprotic (donates only 1 H⁺)
3. HCl (Hydrochloric acid) → Monoprotic

Explanation

Ferrum is the Latin name for iron, which is why its chemical symbol is Fe.

It is a transition metal used widely in construction.

It is essential in the human body for forming hemoglobin.

Explanation

"Very interesting" describes a noun by giving more information — this makes it an adjective phrase.

"Very" intensifies the adjective "interesting", forming a phrase that modifies nouns.

Explanation

A linear scale uses a line marked with distances to represent the scale on a map.

It helps measure actual distances directly by comparing with the marked segments on the line.