Space & Earth Science

Planets, ozone, and natural extremes. Ideal for competitive exams and general knowledge prep.

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QUESTION NO 01

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 02

Which gas do plants absorb for photosynthesis?

Answer: Carbon dioxide

CO2 + water + light → sugars + oxygen.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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QUESTION NO 03

The hardest natural substance is?

Answer: Diamond

Diamond ranks highest on the Mohs scale.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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QUESTION NO 04

Sound cannot travel through?

Answer: Vacuum

Sound needs a material medium.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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QUESTION NO 05

The center of an atom is called the?

Answer: Nucleus

Protons and neutrons form the nucleus.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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QUESTION NO 06

Vitamin C deficiency can cause?

Answer: Scurvy

Ascorbic acid prevents scurvy.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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QUESTION NO 07

Which blood cells help fight infection?

Answer: White blood cells

Leukocytes are immune cells.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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QUESTION NO 08

The pH of pure water at 25°C is about?

Answer: 7

Neutral pH is 7.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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QUESTION NO 09

Newton’s first law is also called the law of?

Answer: Inertia

Bodies remain at rest/uniform motion unless acted on.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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QUESTION NO 10

Which organ pumps blood through the body?

Answer: Heart

The heart is a muscular pump.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

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Shahzad Mahota

@shahzad-mahota

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Space & Earth Science

Humans normally have how many chromosomes?

Which gas do plants absorb for photosynthesis?

The hardest natural substance is?

Sound cannot travel through?

The center of an atom is called the?

Vitamin C deficiency can cause?

Which blood cells help fight infection?

The pH of pure water at 25°C is about?

Newton’s first law is also called the law of?

Which organ pumps blood through the body?

Published By

Shahzad Mahota

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00

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Space & Earth Science

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

The center of an atom is called the?

Explanation

Vitamin C deficiency can cause?

Explanation

Which blood cells help fight infection?

Explanation

The pH of pure water at 25°C is about?

Explanation

Newton’s first law is also called the law of?

Explanation

Which organ pumps blood through the body?

Explanation

Published By

Shahzad Mahota

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00

00

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