Explanation

Vertical columns in the periodic table are called groups.

Horizontal rows are called periods.

Explanation

In HNO₃ (nitric acid):

Hydrogen (H) = +1

Oxygen (O) = -2 (×3 = -6)

Let nitrogen = x

So, +1 + x + (−6) = 0

⇒ x = +5

Nitrogen has an oxidation state of +5 in HNO₃.

Explanation

AGGRESSIVE means جارحانہ

Quarrelsome means جھگڑا

Violent means متشدد

Explanation

An imperative sentence gives a command, request, or instruction.

Example: Please close the door. or Sit down.

Explanation

The time period (T) of a simple pendulum is given by:

T ∝ √L

If the length (L) is made four times:

New time period T' ∝ √(4L)

T' ∝ 2√L

T' = 2T

The time period will become double.

Explanation

(+5) - (+7) = 5 - 7 = -2

Subtracting a larger positive number from a smaller one gives a negative result.

Explanation

Explanation

Getting out of something means کسی چیز یا جگہ سے باہر نکلنا

The correct phrase is "getting out of the car" — "of" is used after "get out" when referring to vehicles.

Explanation

Planning for an institution should be based on:

• Aims: The organization's purpose, goals, and objectives, providing direction and focus.
• Needs: The requirements and necessities of the students, teachers, and the institution itself, ensuring relevance and effectiveness.

Explanation

A coordinating conjunction is a word that joins two elements of equal grammatical rank and syntactic importance.

They can join two verbs, two nouns, two adjectives, two phrases, or two independent clauses.

The seven coordinating conjunctions are for, and, nor, but, or, yet, and so.