General Knowledge of Pakistan

question bank

General Science & Ability

300

questions

277.

What phenomenon causes white light to separate into its component colours when passing through a prism?

Dispersion

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278.

What is the approximate speed of light in a vacuum?

300,000 kilometres per second (about 3.0 × 10^8 m/s)

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279.

What property of a sound wave primarily determines its pitch?

Frequency

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280.

In which medium does sound generally travel fastest: gases, liquids, or solids?

Solids

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281.

Can sound travel through a perfect vacuum?

No

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282.

What form of energy is stored because of an object's position or configuration?

Potential energy

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283.

What form of energy does a moving object possess?

Kinetic energy

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284.

What is the SI unit of energy?

Joule (J)

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285.

What is the SI unit of force?

Newton (N)

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286.

What is the pH of a neutral aqueous solution at about room temperature?

7

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287.

A substance with a pH below 7 is generally classified as what?

Acidic

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288.

What does the atomic number of an element represent?

The number of protons in its nucleus

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Page 24 of 25 · 300 questions in this section

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