11. Which of the following statements is true/false?
Statement:
1. H2SO4 is used to remove sulphur and other compounds in petroleum refining.
2. The basic nature of sodium hydroxide (NaOH) is due to the presence of hydrogen ions.
Statement:
1. H2SO4 is used to remove sulphur and other compounds in petroleum refining.
2. The basic nature of sodium hydroxide (NaOH) is due to the presence of hydrogen ions.
12. . . . . . . . . is not acidic.
13. Which one of the following gives the highest amount of hydrogen ions (H+)?
14. The substances whose odor changes into acidic or alkaline medium . . . . . . . . it is said.
15. Sodium hydroxide reacts with . . . . . . . . to form a simple salt solution?
16. Which of the following is not a neutral oxide?
17. Suppose you have four test tubes labelled as 'A', 'B', 'C' and 'D'. 'A' contains plain water, 'B' contains solution of an alkali, 'C' contains solution of an acid, and 'D' contains solution of sodium chloride. Which one of these solution will turn phenophthalein solution pink?
18. Vinegar made by fermentation from cane sugar contains
19. An acid having basicity one is
20. Which one of the following substances is used in photography and also as an antichlor?
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