Explanation

When acids react with carbonates, they produce carbon dioxide gas, water, and a salt.

For example:

2HCl + Na2CO3 → 2NaCl + H2O + CO2.

Explanation

An electric field is the region around a charged particle where it exerts a force on other charges.

It is represented by field lines.

It is measured in newtons per coulomb (N/C).

Explanation

We are given the equation:

w = (2/3)t + 6

and asked to find w when t = 12.

Step-by-step:

w = (2/3 × 12) + 6

w = 8 + 6

w = 14

Explanation

"Under" is used when something moves to a position directly beneath.

It often touching or close to the bottom of something — like a coin rolling under a sofa.

Under means اس کے تحت

Explanation

Any non-zero number raised to the power of 0 equals 1.

So, 10⁰ = 1.

Explanation

Curious means شوقین

Explanation

Explanation

The first law of reflection states that the angle of incidence = angle of reflection.

Both rays and the normal lie in the same plane.

Explanation

Let the money Bilal has = x

Then Ahmed has = x + 20

Together they have:

x + (x + 20) = 150

→ 2x + 20 = 150

→ 2x = 130

→ x = 65

Bilal has 65 PKR.

Explanation

A Table is a collection of related records in a database.

It organizes data into rows and columns, where each row represents a record, and each column represents a field or attribute.

Unlike a file, which is a collection of data without any inherent structure, a table in a database is designed to store structured and related information.

A table is a fundamental component of a relational database, providing a systematic way to organize and manage data.