Science | MCQs

Explanation

Reveal is a verb which means to make known or show something that is surprising or that was previously secret.

Explanation

"You told me that water freezes at 0°C."

The original sentence is a statement of a general/scientific fact ("Water freezes at 0°C").

In reported speech:

• "Said to" changes to "told" (more natural for reported speech)
• The tense remains present ("freezes") because it's a universal truth
• The conjunction "that" is properly used
• The factual information remains unchanged

Explanation

Although speed and velocity are often used interchangeably, technically, speed is not always the same as velocity.

اگرچہ رفتار اور رفتار اکثر ایک دوسرے کے بدلے استعمال ہوتی ہے، تکنیکی طور پر، رفتار ہمیشہ رفتار جیسی نہیں ہوتی۔

As velocity includes direction while speed does not.

Explanation

In "Dark They Were, and Golden-Eyed" by Ray Bradbury,

The characters see old cities on the Martian hills.

The discovery of these cities contributes to the sense of wonder and unease experienced by the colonists as they grapple with the changes occurring in their new environment.

Explanation

Partido Nacionalista de Puerto Rico (PNPR)

Explanation

Thomas Edison was an American inventor.

 “In 1879, he made an incandescent bulb that burned long enough to be practical, long enough to light a home for many hours

Explanation

Normative science deals with standards or norms, prescribing how things ought to be rather than describing how they are.

Explanation

Ethics is primarily concerned with conduct, guiding individuals and societies on what is considered morally right or wrong.

Explanation

RNA stands for Ribonucleic acid