Chemistry Mcqs XII [300 MCQS All Chapters] Online Test 7

XII Chemistry Online Mcqs - All Chapters - Online Mcqs Test - 7

Chemistry Online Mcqs Test for class 12, Second Year, According to Karachi Board 300 Online Multiple Choice Questions

Q1. Backing powder has which one of the following formula?

• Na₂CO₃
• Na₂SO₄
• NaHCO₃
• K₂C0₃

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Q2. The chemical formula of gypsum is

• CaSO₄.5H₂O
• CaSO₄.4H₂O
• CaSO₄.2H₂O
• None

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Q3. The commonly used name for sodium hydroxide is

• Soda ash
• Baking soda
• Caustic soda
• None

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Q4. Sodium hydroxide is heated with silver nitrate, the product will be

• Ammonium hydroxide, silver hydroxide
• Ammonia water
• Sodium chlorate, sodium chloride and water
• No reaction

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Q5. If chlorine is bubbled through cold solution of calcium hydroxide, the product will be

• Bleaching powder, sodium chloride and water
• Sodium chlorate
• Sodium chlorate, sodium chloride and water
• Sodium chloride and hydrochloric acid

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Q6. Nelson’s cell is used for the manufacture of

• NaCl
• NaOH
• Na₂CO₃
• CaCO₃

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Q7. Castner - Kellner process is used for the production of _________ on industrial scale

• NaCI
• NaOH
• Na₂CO₃
• NaHCO₃

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Q8. The chemical formula of bleaching powder is

• CaCl₂
• CaOCl
• Ca(OCl)Cl
• Ca(HCO₃)₂

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Q9. The bleaching action of bleaching powder is due to the formation of

• O₂
• OCl
• Cl₂
• Cl

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Q10. White vitriol has the formula

• CUSO₄
• ZnSO₄.7H₂O
• FeSO₄.7H₂O
• COSO₄.7H₂O

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