VISION ACADEMY

1. What do you observe when Sodium carbonate solution is mixed with Barium chloride solution followed by addition of HCl?

• White ppt is formed which is insoluble in dil.HCl
• White ppt is formed
• White ppt is formed which is soluble in dil. HCl
• Yellow ppt. is formed

2.Give a reason why carbon dioxide and sulphur dioxide cannot be distinguished by using lime water.

• Because both turns lime water milky
• Both turns the above solution colourless
• Because both turns lime water milky AND In excess turns colorless
• NONE

3. Carbon dioxide and sulphur dioxide gas can be distinguished by using

• moist blue litmus paper
• lime water
• lead acetate paper
• acidified potassium dichromate solution

4. The compound which is responsible for the green colour formed when SO2 is bubbled through acidified potassium dichromate solution.

• Nitroso Iron [II] sulphate
• Chromium sulphate
• Ferric sulphate
• Sodium chloride.

5.What do you observe when Sodium sulphate solution is mixed with Barium chloride solution followed by addition of HCl?

• White ppt is formed which is soluble in dil. HCl
• Yellow ppt. is formed which is soluble in dil. HCl
• Brown ppt is formed which is insoluble in dil. HCl
• White ppt is formed which is insoluble in dil. HCl