Explanation

Sodium is a reducing agent because it loses electrons easily.

Oxidizing agents gain electrons; chlorine, nitric acid, and nitrogen can act as oxidizers, but sodium cannot.

Explanation

The correct order of pronouns in a positive sentence is 2nd person (you), 3rd person (he), and 1st person (I).

However, in traditional formal usage, "He, you and I" is acceptable and commonly used.

Explanation

To evaluate the expression 3x + 6y + 4x, we need to combine like terms:

3x + 6y + 4x = (3x + 4x) + 6y

= 7x + 6y

So, the correct result is 7x + 6y.

Explanation

The micro-teaching system was introduced at Stanford University in 1961.

It was developed as a method for teacher training, allowing educators to practice teaching in a controlled, small-scale environment before applying their skills in larger classrooms.

Explanation

Saudi Arabia became the first Muslim-majority country to hold the G20 presidency in 2020.

It hosted the G20 Summit in Riyadh (November 21–22, 2020), focusing on global economic recovery post-COVID-19.

Explanation

ماحول کی صفائی ہمارے قومی فریضے میں شامل ہے کیونکہ یہ تمام شہریوں کے لیے ذمہ داری ہے۔

اس میں ہر فرد کا کردار اہم ہے تاکہ ہم اپنے ملک کو صاف ستھرا رکھ سکیں۔

Explanation

Multiply the constants: 3 × 4 = 12.

Add the exponents of x: x² × x³ = x⁵, so the product is 12x⁵.

Explanation

The initial committee formed to organize the first OIC summit in 1969 consisted of 6 member countries.

These countries laid the groundwork for the establishment and coordination of the Organization of Islamic Cooperation (OIC).

Explanation

صلح حدیبیہ کے مطابق، اگلے سال مسلمان عمرہ ادا کرنے مکہ آئیں گے لیکن ان کی تلواریں نیام میں ہونگی۔

یہ شرط امن اور عدم جارحیت کی علامت تھی تاکہ قریش کو خطرہ محسوس نہ ہو۔

Explanation

Chaudhry Rahmat Ali started the Pakistan National Movement in England in 1933.

He is credited with coining the name "Pakistan" and advocating for a separate Muslim state.