Assignment No - 3 Acids, Bases and Salts | Class 10th

Assignment No - 3

Acids, Bases and Salts

Que 21. Compounds such as alcohols and glucose also contain hydrogen but are not categorized as acids. Describe an activity to prove it.

                                                                              

 Que 22. Why does distilled water not conduct electricity, whereas rain water does?

Que 23. Why do acids not show acidic behaviour in the absence of water?

Que 24. Equal lengths of magnesium ribbons are taken in test tubes A and B. Hydrochloric acid (HCl) is added to test tube A, while acetic acid (CH₃COOH) is added to test tube B. In which test tube will the fizzing occur more vigorously and why?

Que 25. Fresh milk has a pH of 6. How do you think the pH will change as it turns into curd? Explain your answer.

Que 26. What is a neutralization reaction? Give two examples.

Que 27. Give two important uses of washing soda and baking soda.

Que 28. A milkman adds a very small amount of baking soda to fresh milk. Why does he shift the pH of the fresh milk from 6 to slightly alkaline? Why does this milk take a long time to set as curd?

Que 29. What are indicators? Name some common indicators.

Que 30. What are alkalis? Write three examples.