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Mole Concept
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Course - JEE Main - Chemistry

How many molecules are present in 44 g of CO₂? (A) 6.022 × 10²³ (B) 3.011 × 10²³ (C) 1.204 × 10²⁴ (D) 2.408 × 10²⁴

By Monika Singh, 09 Jun 2026 At 11:23 AM

0 replies 1 views

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What are Units?
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Course - JEE Main - Chemistry

A unit is a standard used to measure a physical quantity. Examples: Length → meter (m) Mass → kilogram (kg) Time → second (s)

By Jyoti, 29 May 2026 At 12:10 PM

0 replies 1 views

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What are protons, neutrons, and electrons?
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QuestionBank - JEE Main - Chemistry

What are protons, neutrons, and electrons?

By Akash, 30 Mar 2026 At 04:19 PM

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What is the difference between taxonomy and systematics?
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Course - Class-XI - XI-Biology

What is the difference between taxonomy and systematics?

By , 18 Feb 2026 At 12:26 PM

1 replies 7 views

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No reply Feb 18, 2026
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