Explanation

The nucleus is primarily composed of protons and neutrons, collectively called nucleons.

Explanation

In the novel "Goodbye, Mr. Chips" by James Hilton,
Mr. Chips becomes a teacher at the fictional English public (boarding) school called Brookfield.

Explanation

Real gases show deviation from ideal behavior at low temperature and high pressure.

Due to increased intermolecular forces and reduced volume available for gas molecules, which contradicts the assumptions of ideal gas behavior.

Explanation

In a bomb calorimeter, reactions are carried out at constant volume.

This is because the calorimeter is designed to keep the volume constant during the reaction.

Any heat released or absorbed during the reaction causes a temperature change, which is measured to determine the heat of the reaction.

The constant volume ensures that the heat measured is solely due to the chemical reaction taking place

Without any external influences like changes in pressure or volume.

Explanation

Explanation

He had his breakfast at 9 o’clock.

The sentence refers to a specific time in the past ("at 9 o’clock"), so the correct tense is simple past.

"Had" is the simple past tense of "have," and it fits well with a completed past action at a specific time.

Explanation

 The meeting was held in the conference room.

یہ ملاقات کانفرنس روم میں ہوئی۔

Use “in” when something happens inside an enclosed space, like a room, hall, or building.

Explanation

Explanation

Explanation

IBM stands for International business machines.

IBM 1401 belong to second generation. 

Second generation of computer: 1956 to 1963

Used in Second Generation: Transistors