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NEET / Chemistry / Demo Practice

Chemistry — 10 Normal Demo Questions

Testing content only: These are normal practice questions, not PYQs. Demo activity is kept separate from real performance analytics.
DEMO 1/10Easy

One mole contains approximately:

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DEMO 2/10Easy

The molar mass of H₂O is approximately:

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DEMO 3/10Easy

The number of moles in 44 g of CO₂ is:

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DEMO 4/10Easy

The empirical formula shows:

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DEMO 5/10Medium

Which law states that mass is neither created nor destroyed in a chemical reaction?

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DEMO 6/10Medium

The SI unit of amount of substance is:

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DEMO 7/10Medium

The molar mass of O₂ is:

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DEMO 8/10Medium

If 2 mol of H₂ react completely with 1 mol of O₂, the product is:

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DEMO 9/10Standard

The limiting reagent is the reactant that:

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DEMO 10/10Standard

Mass percent of a component is calculated as:

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