Explanation

Several words are sometimes used as adverbs or sometimes used as prepositions.

A word is a preposition when it governs a noun or a pronoun, It is an adverb when it does not.

He moved on. “On” is an adverb here

Keep your books on the table. “On” is a preposition here

Explanation

"Scenery" is an uncountable noun, so it takes the singular verb "is."

The scenery of Kashmir is very beautiful.

کشمیر کا مناظر بہت خوبصورت ہے۔

Explanation

The student does not agree with the proposal put forth by the teacher.

طالب علم استاد کی طرف سے پیش کردہ تجویز سے متفق نہیں ہے۔

The correct preposition is "with" because we say "agree with" someone or their proposal.

Explanation

He gives a lot of contributions to welfare societies

وہ فلاحی معاشروں میں بہت زیادہ تعاون کرتا ہے

In the sentence the word "to" is used as a preposition to indicate the target or recipient of the contributions. 

Explanation

Adhere is followed by To.

Adhere to means قائم رہنا یا عمل کرنا

You must adhere to the rules followed by this company means آپ کو اس کمپنی کے اصولوں پر عمل کرنا چاہیے

Explanation

Generally the rich are more convention of money than the poor.

عام طور پر امیر غریبوں کے مقابلے میں پیسے کا زیادہ کنونشن ہوتے ہیں۔

convention of: is the best suitable preposition here according to the statement of the question

convention of : a usual or accepted way of behaving, especially in social situations

Explanation

Generally the word afraid takes preposition of.

Afraid of snakes, afraid of dogs, afraid of animals etc.

Afraid of means خوفزدہ 

Explanation

Liable for means responsible for

Liable for ذمہ دار قرار دینا

Liable to means entitled to.

Liable to حقدار

You will be liable to tax on the interest. 

Explanation

We usually use about after opinion.

Opinion about someone means کسی انسان کے بارے میں رائے رکھنا

Explanation

Over is sometimes also used to cover the whole surface.

Over is a preposition here.

Put a blanket over the child means بچے پر ایک کمبل ڈال دو