Quiz for H2O2

Q1: Which oxidation state does oxygen exhibit in H₂O₂?

A. -1 B. 0 C. +1 D. -2

Q2: Which of the following acts as both oxidizing and reducing agent?

A. O₂ B. H₂O C. H₂O₂ D. O₃

Q3: Which is the correct structure of hydrogen peroxide?

A. Linear B. Bent C. Open book D. Tetrahedral

Q4: Which of these is NOT a use of H₂O₂?

A. Bleaching agent B. Rocket propellant C. Antiseptic D. Dehydrating agent

Q5: In acidic medium, H₂O₂ decomposes to give:

A. O₂ B. H₂ C. O₃ D. H₂O

Q6: Which method is used to determine the concentration of H₂O₂?

A. Iodometric titration B. pH-metry C. Gravimetric analysis D. Colorimetry

Q7: Which type of bond is present between two oxygen atoms in H₂O₂?

A. Ionic B. Double covalent C. Single covalent D. Hydrogen

Q8: Hydrogen peroxide can be stored in:

A. Glass bottle B. Alkaline solution C. Plastic bottle D. Wax-lined bottle

Q9: Which acts as a catalyst in the decomposition of H₂O₂?

A. MnO₂ B. NaOH C. CuSO₄ D. FeCl₃

Q10: Which of the following indicates the strength of H₂O₂?

A. Normality B. Volume strength C. Molarity D. Molality

Q11: 20 volume H₂O₂ means it can release:

A. 10 mL O₂ from 1 mL solution B. 20 mL O₂ from 1 mL solution C. 5 mL O₂ from 1 mL solution D. 40 mL O₂ from 1 mL solution

Q12: Stability of H₂O₂ increases in the presence of:

A. Light B. Acid C. Stabilizers D. Heat

Q13: The molar mass of H₂O₂ is:

A. 34 g/mol B. 32 g/mol C. 36 g/mol D. 18 g/mol

Q14: H₂O₂ acts as a bleaching agent in:

A. Acidic medium B. Neutral medium C. Basic medium D. All of the above

Q15: Which is more stable: H₂O or H₂O₂?

A. H₂O B. H₂O₂ C. Both same D. Cannot be predicted

Q16: H₂O₂ is obtained by the action of cold dil. H₂SO₄ on:

A. BaO₂ B. CaO C. Na₂O₂ D. K₂O₂

Q17: H₂O₂ can oxidize:

A. KI to I₂ B. Cl⁻ to Cl₂ C. SO₂ to H₂SO₄ D. All of the above

Q18: Which ion is formed when H₂O₂ loses an H⁺?

A. HO₂⁻ B. OH⁻ C. O₂²⁻ D. O⁻

Q19: Industrial production of H₂O₂ is by:

A. Electrolysis of water B. Anthraquinone process C. Decomposition of BaO₂ D. Reduction of O₂

Q20: H₂O₂ can reduce:

A. KMnO₄ B. O₃ C. I₂ D. O₂