Quiz for Mole Concept-

Q1: 1 mole of any substance contains how many particles?

A. 6.022 × 10²² B. 6.022 × 10²³ C. 6.022 × 10²⁴ D. 6.022 × 10²¹

Q2: How many grams are there in 1 mole of H₂O?

A. 18 g B. 16 g C. 2 g D. 20 g

Q3: What is the molar mass of CO₂?

A. 44 g/mol B. 28 g/mol C. 32 g/mol D. 12 g/mol

Q4: Number of atoms in 1 mole of Na is:

A. 6.022 × 10²³ B. 1.204 × 10²⁴ C. 3.011 × 10²³ D. None

Q5: 0.5 moles of O₂ molecules contain how many molecules?

A. 3.011 × 10²³ B. 6.022 × 10²³ C. 1.204 × 10²³ D. None

Q6: How many moles are present in 18 g of H₂O?

A. 1 B. 0.5 C. 2 D. 18

Q7: Calculate number of atoms in 2 moles of O₂.

A. 2 × 6.022 × 10²³ B. 4 × 6.022 × 10²³ C. 1.204 × 10²³ D. None

Q8: Mass of 0.5 mole of CO₂ is:

A. 22 g B. 44 g C. 11 g D. 33 g

Q9: How many moles are there in 12 g of carbon (C)?

A. 1 B. 0.5 C. 12 D. 2

Q10: Volume occupied by 1 mole of gas at STP is:

A. 24.4 L B. 22.4 L C. 20.4 L D. 21.4 L

Q11: Find the number of moles in 11 g of CO₂.

A. 0.25 B. 0.5 C. 0.75 D. 1

Q12: Which of the following has maximum number of molecules?

A. 16 g of O₂ B. 2 g of H₂ C. 44 g of CO₂ D. 18 g of H₂O

Q13: Mass of 1 atom of carbon (C) is:

A. 12 g B. 1.992 × 10⁻²³ g C. 6.022 × 10²³ g D. None

Q14: What is the molar mass of NaCl?

A. 58.5 g/mol B. 23 g/mol C. 35.5 g/mol D. 60 g/mol

Q15: 0.25 moles of a gas at STP occupy how much volume?

A. 5.6 L B. 22.4 L C. 11.2 L D. 44.8 L

Q16: Calculate the number of molecules in 5.6 L of O₂ at STP.

A. 1.505 × 10²³ B. 2.011 × 10²³ C. 3.011 × 10²³ D. 6.022 × 10²³

Q17: 1 mole of Al₂(SO₄)₃ contains how many atoms?

A. 17 × 6.022 × 10²³ B. 14 × 6.022 × 10²³ C. 12 × 6.022 × 10²³ D. None

Q18: Which of the following is NOT equal to 1 mole?

A. 1 g of H₂ B. 6.022 × 10²³ atoms C. 22.4 L of gas at STP D. Molecular mass in grams

Q19: How many moles are present in 0.5 g of H₂ gas?

A. 0.25 B. 0.5 C. 0.75 D. 0.1

Q20: Find the number of molecules in 36 g of H₂O.

A. 1.204 × 10²⁴ B. 2.0 × 10²³ C. 6.022 × 10²³ D. None