Explanation

The words like on, over, at, under, by etc. are called Prepositions.

"Under" is a preposition showing the relationship between the cat and the table.

Prepositions indicate position, direction, or time in a sentence.

Explanation

The student was punished by the teacher. is the correct passive voice transformation of the given active sentence.

The past tense of "punished" is used in the passive construction.

Explanation

The correct sentence is: "Ali Rizwan needed a little more time than others to talk."

"A" is used before singular countable nouns when referring to an unspecified quantity.

Explanation

Assessment criteria clearly describe the level of performance a learner must show to be considered competent.

It provides a standard against which student work is measured to judge proficiency.

Explanation

To find the distance traveled by the rider, we need to calculate the arc length:

Given:

Radius (r) = 49 meters

Angle (θ) = 150°

First, convert the angle to radians:

θ = 150° * (π / 180)

= 150 * π / 180

= 5π/6 radians

Now, calculate the arc length (s):

s = r * θ

= 49 * (5π/6)

= 49 * 5 * 3.14159 / 6

≈ 128.33 meters

Explanation

Given:

Z1 = 2 - i

Z2 = 3 + i

Product of Z1 and Z2:

Z1 * Z2 = (2 - i) * (3 + i)

= 6 + 2i - 3i - i²

Since i² = -1,

= 6 - i + 1

= 7 - i

Explanation

A sphere is a 3D (three-dimensional) shape because it has depth, along with height and width.

Circle, rectangle, and triangle are 2D (two-dimensional) shapes as they have only length and width.

Explanation

Sodium chloride (NaCl) dissolves in water because it is an ionic compound that dissociates into ions.

Water molecules surround and separate the sodium and chloride ions, allowing it to dissolve.

Explanation

The correct phrase is "The house is on fire", meaning the house is burning.

The preposition "on" is used when referring to something being in the state of burning or combustion.

Explanation

A lesson plan helps organize teaching materials, objectives, and activities effectively.

It serves as a guide for delivering the lesson in a structured and purposeful way.