Explanation

علاج بالدوا کا مطلب ہے بیماری کا علاج دوائیوں کے ذریعے کرنا۔

یہ طریقہ علاج ادویات کے استعمال پر مبنی ہوتا ہے، بغیر جراحی (آپریشن) کے۔

Explanation

Biocatalysis uses natural catalysts (enzymes) to speed up the decomposition of organic materials.

It helps in converting biomass into useful energy sources like biofuels.

Explanation

3x means three times of x.

2y means two times of y.

The expression 3x + 2y represents the sum of three times of x and two times of y.

Explanation

The 21th century is the century of sophisticated technology and science. Technology and science began to make progress in the seventeenth century.

1. The word 'century' is a/n _____?

(A) Noun

(B) Conjunction

(C) Preposition

(D) Article

Explanation:

"Century" is a naming word, referring to a period of 100 years.

It functions as a common noun in the sentence.

2. The word 'began' in the passage is a/an _____?

(A) Noun

(B) Conjunction

(C) Preposition

(D) Verb

Explanation: 

"Began" is the past tense of "begin," which is an action word.

It indicates an action that started in the past.

Explanation

Supplementary angles add up to 180°, so set up an equation:

(3x + 5) + (9x - 5) = 180°

Combine like terms:

12x = 180°

Divide both sides by 12:

x = 15°

Explanation

Explanation

The sentence is a question, so it ends with a question mark (?).

"Shandor" is a proper noun, so it must start with a capital letter.

Explanation

Given:

Breadth = 1/5 × Length

Perimeter = 24m

Let length = L

Breadth = L/5

Perimeter formula: P = 2(L + B)

24 = 2(L + L/5)

24 = 2(6L/5)

24 = 12L/5

24 × 5 = 12L

120 = 12L

L = 10m

Explanation

Blue green algae (also called cyanobacteria) are prokaryotes, meaning they lack a true nucleus and membrane-bound organelles.

Unlike animals and plants (which are eukaryotes), their DNA floats freely in the cytoplasm.

Explanation

• Phenolphthalein is a pH indicator that changes color in response to changes in acidity or basicity.
• In an acidic medium, it is colorless, and in a basic medium, it turns pink.