Class 11 · Chemistry
Some Basic Concepts of Chemistry
NEET questions.
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200 verified questions · NCERT chapter mapped · automatic error log
ChemistryPlate 86
NeetVellum atlas · fig. chemistry
86
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Three examples from the live 200-question bank. Answers appear after attempting them in practice mode.
Example 1 · difficulty 1/5
The number of molecules present in 4.4 g of carbon dioxide (molar mass 44 g mol⁻¹) is:
- A. 6.022 × 10²³ molecules
- B. 6.022 × 10²² molecules
- C. 1.204 × 10²³ molecules
- D. 3.011 × 10²² molecules
Example 2 · difficulty 2/5
The number of moles of oxygen atoms present in 9.8 g of sulphuric acid, H₂SO₄ (molar mass 98 g mol⁻¹), is:
- A. 0.1 mol
- B. 0.2 mol
- C. 0.4 mol
- D. 0.7 mol
Example 3 · difficulty 3/5
An oxide of iron contains 69.9% iron and 30.1% oxygen by mass (atomic masses: Fe = 56, O = 16). Its empirical formula is:
- A. FeO
- B. Fe₃O₄
- C. FeO₂
- D. Fe₂O₃
The chapter mastery loop
- 1. Attempt firstExpose recall gaps before rereading.
- 2. Classify the missConcept, careless, rushed or guessed.
- 3. Re-practiceReturn until the error pattern disappears.
Frequently asked questions
How many Some Basic Concepts of Chemistry NEET questions are available?
NeetVellum publishes 200 verified questions for this chapter. Free accounts use the daily UG quota; UG Pro removes it.
How should I revise Some Basic Concepts of Chemistry for NEET?
Attempt questions before rereading, classify each miss, revisit the exposed NCERT concept, then re-practice until the error pattern disappears.