Everyday Science Basics

Water, light, sound, and common facts. Ideal for competitive exams and general knowledge prep.

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QUESTION NO 01

The chemical symbol for water is?

Answer: H2O

Two hydrogen atoms bonded to one oxygen.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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QUESTION NO 02

Photosynthesis mainly occurs in which plant organelle?

Answer: Chloroplast

Chloroplasts contain chlorophyll.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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QUESTION NO 03

The speed of light in vacuum is approximately?

Answer: 3 × 10^8 m/s

About 300,000 km per second.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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QUESTION NO 04

DNA stands for?

Answer: Deoxyribonucleic acid

DNA carries genetic information.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 05

Which planet is known as the Red Planet?

Answer: Mars

Iron oxide gives Mars its reddish look.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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QUESTION NO 06

The SI unit of force is the?

Answer: Newton

1 N = 1 kg·m/s².

Shahzad Mahota @shahzad-mahota

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2930 Questions

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QUESTION NO 07

Humans normally have how many chromosomes?

Answer: 46

23 pairs = 46 chromosomes.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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QUESTION NO 08

Which gas do plants absorb for photosynthesis?

Answer: Carbon dioxide

CO2 + water + light → sugars + oxygen.

Shahzad Mahota @shahzad-mahota

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2930 Questions

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QUESTION NO 09

The hardest natural substance is?

Answer: Diamond

Diamond ranks highest on the Mohs scale.

Shahzad Mahota @shahzad-mahota

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QUESTION NO 10

Sound cannot travel through?

Answer: Vacuum

Sound needs a material medium.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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Shahzad Mahota

@shahzad-mahota

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Everyday Science Basics

The chemical symbol for water is?

Photosynthesis mainly occurs in which plant organelle?

The speed of light in vacuum is approximately?

DNA stands for?

Which planet is known as the Red Planet?

The SI unit of force is the?

Humans normally have how many chromosomes?

Which gas do plants absorb for photosynthesis?

The hardest natural substance is?

Sound cannot travel through?

Published By

Shahzad Mahota

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00

00

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Everyday Science Basics

The chemical symbol for water is?

Explanation

Photosynthesis mainly occurs in which plant organelle?

Explanation

The speed of light in vacuum is approximately?

Explanation

DNA stands for?

Explanation

Which planet is known as the Red Planet?

Explanation

The SI unit of force is the?

Explanation

Humans normally have how many chromosomes?

Explanation

Which gas do plants absorb for photosynthesis?

Explanation

The hardest natural substance is?

Explanation

Sound cannot travel through?

Explanation

Published By

Shahzad Mahota

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00

00

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