Pakistan MCQs

'Often' tells how frequently the action occurs.
Words such as always, often, and rarely are adverbs of frequency.

'Who' introduces a clause describing 'student.'
Relative pronouns connect dependent clauses to nouns.

'Before' introduces the dependent clause 'you leave.'
A word joining a subordinate clause to a main clause functions as a conjunction.

'Useful' describes the noun 'suggestion.'
Words that modify nouns are adjectives.

'Repaired' takes the direct object 'the engine.'
A verb that transfers its action to an object is transitive.

'Laughed' does not require a direct object.
A verb that expresses a complete action without an object is intransitive.

'Alas!' expresses sudden emotion, especially sorrow or regret.
Such standalone emotional expressions are interjections.

'Him' is the objective form required after the verb 'praised.'
Object pronouns receive the action of a verb.

'Those' points out which books are meant and appears before the noun.
Demonstratives functioning before nouns are determiners.

Primary standards have accurately known composition.
They are weighed directly to prepare or standardize solutions.

Hardness reduces soap lather and can form scale.
It may be temporary or permanent depending on associated anions.

BOD indicates biodegradable pollution in water.
High BOD can deplete dissolved oxygen in receiving waters.