Explanation

The charges of Proton, Electron, Neutron respectively are:

• Proton: Positive charge (+1)
• Electron: Negative charge (-1)
• Neutron: Neutral charge (0)

Explanation

At 170°C, ethanol undergoes acid-catalyzed dehydration to form ethene (C₂H₄).

Concentrated H₂SO₄ acts as a dehydrating agent, removing water from ethanol.

Explanation

"Hour" begins with a silent h, so it sounds like it starts with a vowel.

Therefore, we use "an" before "hour" — "150 miles an hour."

Explanation

"The" is used to refer to something specific or already known to the listener.

Since "blue T-shirt over there" is a specific item, "the" is the correct article.

Explanation

"Broke down" is a phrasal verb meaning to lose control emotionally.

It fits the context of stopping mid-speech due to strong feelings.

Explanation

Maltose is made of two glucose molecules, so both structural units are the same.

Lactose = glucose + galactose (different units).

Sucrose = glucose + fructose (different units).

Explanation

Absolute alcohol refers to 100% pure ethanol, free from any water content.

It is used in laboratories and industrial applications where water-free alcohol is essential.

Explanation

Stood means کھڑا

Sat means بیٹھا

Explanation

"Been" is the past participle used with "has" to form the present perfect tense ("has been caught").

It indicating the man's current state of being caught

Explanation

Funaria is a moss, and mosses belong to the class Bryopsida.

It is a non-vascular, spore-producing plant typically found in moist, shady places.