Explanation

If A is a subset of B (A ⊂ B), then every subset of A is also a subset of B.

This means the power set of A (P(A)) is a subset of the power set of B (P(B)).

Explanation

Evaluation helps in motivating learners by recognizing their progress and achievements.

It encourages continuous improvement and active participation in learning.

Explanation

Enthalpy is a form of energy, so its SI unit is Joule (J).

1 calorie = 4.184 joules.

But Joule is the standard unit in thermodynamics.

Explanation

Jet fuel (aviation turbine fuel) is primarily refined from kerosene oil.

It provides high energy output and burns efficiently in jet and some rocket engines.

Explanation

Mass number = Protons + Neutrons in an atom.

Carbon's most common isotope (Carbon-12) has 6 protons and 6 neutrons, making its mass number 12.

Explanation

Decomposers break down organic matter into simpler substances.

Bacteria and fungi play a key role in decomposition and nutrient recycling.

Explanation

"Among" is used when referring to a group of people or things.

Since the president is surrounded by multiple bodyguards, "among" is the correct choice.

Explanation

"She was late" is in the past simple tense, so the following action should be in past perfect to show it happened earlier.

"The class had started" (past perfect) correctly indicates that the class began before she arrived.

Explanation

"Located" describes the state or position of the house.

Past participles (like "located") can function as adjectives when they describe a noun.

Explanation

ü  Pakistan has been hosting the maritime multinational naval drill ‘AMAN’ since 2007.

ü   Participant: British, the U.S., Turkish, Chinese, Japanese, Russia, and other forces.

ü  AMAN-21 is the 7th Multinational Maritime Exercise.