Explanation

Tritium is a beta-emitting radioactive isotope of hydrogen.

Its nucleus consists of one proton and two neutrons,

Making it three times as heavy as a hydrogen nucleus (with its one proton) and one-and-a-half times as heavy as deuterium (which contains one proton and only one neutron).

nucleus of tritium ${}_1^{3}H=1proton+2neutrons$

Explanation

"than" is used after "older" to establish the comparison between "she" and "Amina."

This construction follows the pattern of "comparative adjective + than" when comparing two things.

"the oldest" is used to denote the superlative form, indicating that "she" is the oldest among "Sana" and potentially others.

Explanation

The logic follows here is :-

Lion is a Carnivorous animal.گوشت خور جانور

Tiger is a Carnivorous animal.گوشت خور جانور

Cheetah is a Carnivorous animal.گوشت خور جانور

Similarly,

Hippopotamus is Omnivorous animal.ہرا خور جانور۔

Explanation

New York is expensive (negative)

I like it (positive)

The conjunction but is used to show contrast, so the correct sentence is:

New York is expensive, but I like it.

Explanation

You can go neither by train nor by Bus 

Neither and nor means ناتو یہ ناتو وہ

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Explanation

Go by train or by a bus.

A is an article here.

Here A bus means کسی بس پر

Explanation

Subject + will/shall + first form of the verb + object.

Passive: Object of the active sentence + will/shall + be + past participle form of the verb + by + subject of the active sentence.

Active: I will write a letter. Passive: A letter will be written by me. Active: She will help me.

Explanation

Both dare and scold are verbs.

Therefore, the preposition to should be used between them.

Explanation

MAGNIFICENT means بہت بڑا، شاندار

 Modest means چھوٹا یا معمولی

Explanation

• The sentence should read: "Our teacher teaches English besides Geography."
• "Besides" is a preposition that means "in addition to" or "as well as".
• It is used to indicate that something is done or happening in addition to something else.