Explanation

Metals make up the majority of elements in the periodic table, especially on the left and center.

They are generally good conductors, malleable, ductile, and have high melting points.

Explanation

Synthetic rubber like neoprene is made by the polymerization of chloroprene (C₄H₅Cl).

It is known for its resistance to oil, heat, and weathering, making it useful in industrial applications.

Explanation

Chile saltpeter is the common name for sodium nitrate (NaNO₃).

It is found naturally in Chile and Peru.

It is used in fertilizers and explosives.

Explanation

Lead (Pb) belongs to Group IVA (Group 14) of the periodic table, along with carbon, silicon, and tin.

Elements in this group have 4 valence electrons and show a mix of metallic and non-metallic properties.

Explanation

Laughing gas is the common name for nitrous oxide (N₂O), a colorless gas with a slightly sweet smell.

It acts as a mild anesthetic and analgesic.

It is often used in dentistry and surgery.

Explanation

Cultivation means means پودوں کی تیاری اور ان کی پرورش کا عمل - بنیادی طور پر ان میں اضافہ

Growing means پودوں کی تیاری اور ان کی پرورش کا عمل - بنیادی طور پر ان میں اضافہ

Explanation

Conveying means علم کی منتقلی یا بات چیت کرنا

Passing on means دوسروں کو معلومات کا اشتراک یا منتقل کرنا

Explanation

Asset means کوئی قیمتی یا فائدہ مند چیز - ایک طاقت یا فائدہ

Advantage means کوئی قیمتی یا فائدہ مند چیز - ایک طاقت یا فائدہ

Explanation

 In any mixture of gases, the sum of the mole fractions of all components is always equal to 1.

Explanation

 Fe atomic number = 26 → Fe: [Ar] 3d⁶ 4s²  

Fe²⁺ loses 2 electrons → becomes 3d⁶ → 4 unpaired electrons.  

Others have fewer or no unpaired electrons.