Explanation

Freeware is software that is completely free to use without any cost, though it is usually copyrighted.

Unlike shareware, freeware doesn’t expire or require payment after trial.

Explanation

John Foster wrote a book about the Olympic Games, detailing their history and significance.

His work is recognized for educating young readers about the origin and evolution of the Olympics.

Explanation

A primary key uniquely identifies each record (row) in a database table.

It ensures data integrity by preventing duplicate and null entries in the key column.

Explanation

Digital storytelling is an example of Web 2.0 technology, which emphasizes user-generated content, interaction, and collaboration.

It allows individuals to create and share multimedia content, engaging with others in dynamic ways.

Explanation

Robert Glaser developed a psychological model of teaching that includes four major sequences: instructional objectives, entry behavior, instructional procedures, and performance assessment.

His model emphasizes systematic instruction and the alignment of teaching methods with learning outcomes.

Explanation

Oil and petrol form a thin layer on the water surface, blocking sunlight from reaching underwater plants.

This layer also restricts the mixing of oxygen from the air into the water, harming aquatic life.

Explanation

An adjective phrase modifies a noun and consists of an adjective along with its modifiers.

In "She had remarkably bright eyes," the phrase "remarkably bright" modifies the noun "eyes," making it an adjective phrase.

Explanation

Given the volume of the cube-shaped pool is 10648 m³. To find the side length (s):

s³ = 10648

s = ∛10648

s = 22

The area of the base floor = s² = 22² = 484 m²

Cost = Area × Rate

= 484 × 85

= 41140

Explanation

Non-formal education refers to organized learning outside the traditional formal education system.

It is designed to meet specific learning goals.

It can be integrated with other educational frameworks.

Explanation

حدیث نبوی صلی اللہ علیہ وسلم میں سورۃ الاخلاص کو ثلث القرآن (قرآن کا تیسرا حصہ) قرار دیا گیا ہے۔

اس سورت میں توحیدِ خالص کا بیان ہے، جو اسلام کا بنیادی عقیدہ ہے۔