Explanation

An electric generator works on the principle of electromagnetic induction.

Faraday's law states that a changing magnetic flux induces an emf, which is the working principle of generators.

Explanation

The verb "sets" is present tense, but the sentence begins with "Last night," requiring past tense.

The past tense of "set" is also "set", so the correct form is "she set."

Explanation

She asked how she, a girl, who could not ride or use sword or lance, could be of any help. Rather would she stay at home and spin beside her dear mother.

The reporting verb "said" changes to "asked" to match the question format in indirect speech.

Tenses are correctly shifted from present to past ("can" → "could", "cannot" → "could not").

The rest of the sentence maintains the original meaning and structure.

Explanation

The rules of a programming language according to which statements are written are referred to as syntax.

Syntax defines the structure and format of valid statements in the language.

Explanation

اسلام میں فضول خرچی اور نمود و نمائش کی مذمت کی گئی ہے۔

حضور صلی اللہ علیہ وسلم نے اونچے گنبد کو مال کا ضیاع سمجھتے ہوئے ناپسند فرمایا۔

Explanation

He exclaimed that it was a very beautiful scenery.

In indirect speech, exclamatory sentences are converted using words like exclaimed with joy/surprise instead of direct exclamations.

The sentence structure changes while keeping the meaning intact.

Explanation

Explanation

Subject: "Now I" – includes the time reference "Now" and the pronoun "I".

Predicate: "am free" – tells what the subject is or does.

Explanation

موئن جو دڑو کی دریافت انسانی اعضاء کی ہڈیوں کی کھدائی کے دوران ہوئی تھی۔

اس سے قدیم وادی سندھ کی تہذیب کے آثار ملے تھے۔

Explanation

A nucleotide, the basic unit of DNA, consists of a 5-carbon sugar (deoxyribose), a nitrogenous base, and a phosphate group.

These components link together to form the DNA's double-helix structure.