Explanation

Terrorism often leads to havoc, meaning widespread destruction or chaos, in society.

The phrase "havoc in the society" accurately describes the negative impact of terrorism.

Explanation

"Bigger" is the comparative form of "big," used to compare two things.

The sentence compares two houses, so the comparative degree is appropriate.

Big: Positive Degree

Bigger: Comparative degree

Biggest: Superlative degree

Explanation

Antibodies are specialized proteins produced by the immune system to identify and neutralize viruses and bacteria.

They specifically bind to foreign particles (antigens) to help destroy them.

Explanation

The sum of the first n natural numbers can be calculated using the formula:

n(n + 1)/2

Here, n = 200:

Sum = 200(200 + 1)/2

= 200 * 201 / 2

= 20100

Explanation

Homonyms are words that have the same spelling and pronunciation but different meanings (e.g., "bat" - an animal and "bat" - used in sports).

They often cause confusion without context due to their identical form.

Explanation

In volleyball, the playing area is called a "court".

A standard volleyball court measures 18 meters long and 9 meters wide.

Explanation

Reflexive pronouns refer back to the subject (e.g., I saw myself).

Words like myself, yourself, himself, herself, itself, ourselves, yourselves, themselves are reflexive pronouns.

Explanation

"Assessment of learning" is used to evaluate student performance by comparing it with learning goals and standards.

It is typically summative and helps in making final judgments about achievement.

Explanation

غزوہ حنین کے موقع پر مالک بن عوف، جو قبیلہ ہوازن کا سردار تھا، شکست کے بعد اپنے کچھ سپاہیوں کو لے کر قلعہ طائف میں جا چھپا۔

اس نے وہاں پناہ لی اور مسلمانوں کے خلاف مزید مزاحمت کی تیاری کی۔

Explanation

Given ratio:

Sand : Cement = 4.8 : 2

Let's find the factor by which 4.8 is multiplied to get 6 kg of sand:

6 kg / 4.8 = 1.25

Now, multiply the cement ratio by this factor:

Cement needed = 2 × 1.25

= 2.5 kg