Explanation

Last verified on 05-09-2026

Explanation

• Pressure cookers cook food faster due to Gay-Lussac’s Law.
• This law states that pressure increases when temperature increases in a closed container.
• In a pressure cooker, steam is trapped, increasing pressure.
• Higher pressure raises the boiling point of water above 100°C.
• Food cooks at a higher temperature, so it cooks faster.

Last verified on 14-06-2026

Explanation

• Ubiquitous means ہر جگہ
• Omnipresent means ہر جگہ
• Everywhere means ہر جگہ

Last verified 09-06-2026

Explanation

• The mitochondrion is the primary site of oxidative phosphorylation in eukaryotic cells.
• Oxidative phosphorylation occurs mainly across the inner mitochondrial membrane.
• It produces most of the cell’s ATP (energy) through the electron transport chain and ATP synthase.

Last verified on 05-09-2026

Explanation

• Pompeii was an ancient Roman city in present-day Italy.
• It was buried by the eruption of Mount Vesuvius in AD 79.
• The nearby city of Herculaneum was also destroyed.
• Volcanic ash and debris preserved much of Pompeii for centuries.

Last verified on 05-09-2026

Explanation

• “To split hairs” means to argue about very small, unimportant differences or details.
• It is usually used when someone focuses on distinctions that do not really matter.
• Example: “Let’s not split hairs over a minor wording difference.”

Last verified on 05-09-2026

Explanation

• The lungs exchange gases — they absorb oxygen (O₂) and release carbon dioxide (CO₂).
• This process is essential for respiration and energy production in the body.

Last verified on 05-09-2026

Explanation

• Nepal is the only country in the world whose national flag is neither rectangular nor square.
• Its flag consists of two joined triangular pennons.
• The current constitutional design of Nepal’s flag was adopted in 1962.
• The flag features the Moon and Sun symbols.

Last verified on 05-09-2026

Explanation

• The correct structure is: No sooner had he made the announcement than...
• With “No sooner”, we use inversion with the past perfect: Had + subject + past participle.

Last verified on 05-09-2026

Explanation

• Dalton’s Law of Partial Pressures was proposed by John Dalton.
• It states that the total pressure of a gas mixture equals the sum of the partial pressures of individual gases.
• Formula: Pₜ = P₁ + P₂ + P₃ + …
• It applies to non-reacting gases under suitable conditions.

Last verified on 05-09-2026