Explanation

Vaccination involves introducing weakened or dead forms of pathogens into the body.

This helps the immune system recognize and fight the real pathogen in the future.

Explanation

For effective communication, the message should be appropriate, meaning it is clear, relevant, and tailored to the audience.

Being appropriate ensures the message is understood correctly and serves its purpose.

Explanation

Obedience is the most critical trait for a student because it ensures:

Respect for rules: Follows classroom discipline and institutional guidelines.

Effective learning: Adheres to teachers’ instructions, enabling structured education.

Foundation for other virtues: Responsibility, truthfulness, and cooperation stem from a disciplined mindset.

Explanation

A compass is used for drawing circles and arcs.

It has a pointed end for the center and a pencil or pen for marking the circle.

Explanation

An objective test typically consists of multiple-choice, true/false, or matching questions, which do not require long written responses.

These tests are easier for students who struggle with writing lengthy answers because they can select or match the correct response without having to write extensively.

Explanation

کچھ نہ ملنے سے کچھ ملنا بہتر ہوتا ہے۔

یہ ضرب المثل اس وقت کہی جاتی ہے جب کم سے کم فائدہ بھی غنیمت سمجھا جائے۔

مطلب یہ کہ اگر پورا نہ سہی، تھوڑا بہت مل جائے تو بھی غنیمت ہے۔

Explanation

سبی اور جیکب آباد پاکستان کے گرم ترین علاقے شمار ہوتے ہیں۔

گرمیوں میں ان شہروں کا درجہ حرارت اکثر پچاس سینٹی گریڈ تک پہنچ جاتا ہے۔

Explanation

"Drank" is the past tense of "drink," used for actions completed in the past.

"Drunk" is the past participle, which requires "have/has/had" (e.g., "They have drunk milk").

Explanation

The atomic mass of aluminum (Al) is 26.98, which is approximately 27.

This is the most common isotope of aluminum, which has an atomic number of 13.

Explanation

In an electrochemical cell, the anode is the positively charged electrode.

Anions (negatively charged ions) move towards the anode because opposite charges attract.