Explanation

Sum of angles in a quadrilateral = 360°

Given angles:

• 109°
• 67°
• 82°

Add them:

109 + 67 + 82 = 258°

Now subtract from 360°:

360° − 258° = 102°

Explanation

The correct preposition is "in" when referring to something affecting a specific location or area.

So, "in our area" correctly describes where malaria has become a problem.

Explanation

"Search for" is the correct phrase used when looking to find something.

"Information about" is used to indicate the subject or topic — in this case, Bhambhore.

Explanation

Inquiry-Based Science Teaching is rooted in the Constructivist approach, where students actively build their own understanding through questioning, exploring, and experimenting.

It encourages hands-on learning and critical thinking rather than passive memorization.

Explanation

When dilute acids react with many metals, they produce hydrogen gas.

For example:

2HCl + Zn → ZnCl2 + H2.

Explanation

Certain means کچھ

Some means کچھ

Explanation

Variety means مختلف اقسام یا اقسام کی ایک حد

One and the same kind means تنوع یا فرق کی کمی

Explanation

The model shown (– – – → + +) suggests starting with a negative and ending with a positive result.

–2 + 3 = 1, which matches that transition from negative to positive.

Explanation

Sodium carbonate (Na₂CO₃) is commonly known as soda ash.

It is used in glass making, detergents, and water softening.

Explanation

On the number line, Point X is clearly positioned at -4, which is four units left of 0.