Explanation

The smallpox vaccine (1796) by Edward Jenner and rabies vaccine (1885) by Louis Pasteur were key biotech advances before the 20th century.

DNA structure was discovered later in the mid-20th century.

Artificial sweeteners also post-date that era.

Explanation

The painting was stolen last month by them.

The sentence is in simple past tense (stole).

Passive voice of simple past is formed as:

was/were + past participle, hence:

was stolen.

Explanation

Explanation

For a leptokurtic distribution, β₂ > 3:

β₂ = μ₄ / μ₂² > 3

Given μ₂ = 3.5:

μ₄ / (3.5)² > 3

μ₄ > 3 × 12.25

μ₄ > 36.75

Explanation

All data entered into a computer is converted into binary numbers (0s and 1s) for processing and storage.

Computers operate using the binary number system internally.

Explanation

Paint is a basic tool used for drawing and graphic designing.

It allows users to create, edit, and color images easily.

Explanation

A blunder is a serious or foolish mistake, often with noticeable consequences.

Blunder means سنجیدہ یا بے وقوف غلطی

Explanation

A laser printer uses a laser beam to produce an image on a drum.

The image is then transferred to paper using toner powder.

Explanation

"Carrying a heavy bag" describes the boy, so a present participle is needed to act as an adjective.

"Carrying" shows the action happening at the time we met the boy.

Explanation

غزوۂ حنین کے موقع پر اوطاس کی گھاٹی کو گھیرنے کے لیے ابو عامر اشعری کو بھیجا گیا تھا۔

ان کا مقصد دشمن کی پیش قدمی روکنا اور عقب سے حملہ کرنا تھا۔