Advertisements
Advertisements
प्रश्न
State the term defined by the following sentence:
A soluble base.
Advertisements
उत्तर
Alkali
APPEARS IN
संबंधित प्रश्न
What do you understand by an alkali?
How would you obtain an alkali from a base.
Metal corrodes due to salts.
What are the similarities between acids and bases?
Match the important chemicals given in Column (A) with the chemical formulae given in Column (B)
| Column (A) | Column (B) |
| (a) Plaster of Paris | Ca(OH)2 |
| (b) Gypsum | CaSO4. 1/2 H2O |
| (c) Bleaching Powder | CaSO4.2H7O |
| (d) Slaked Lime | CaOCl2 |
Phenolphthalein gives ______ colour with lime water.
Boojho, Paheli and their friend Golu were provided with a test tube each containing China rose solution which was pink in colour. Boojho added two drops of solution ‘A’ in his test tube and got dark pink colour. Paheli added 2 drops of solution ‘B’ to her test tube and got green colour. Golu added 2 drops of solution ‘C’ but could not get any change in colour. Suggest the possible cause for the variation in their results.
Match the following:
| 1. | Sulphuric acid | a. | Weak base |
| 2. | Sodium hydroxide | b. | Strong acid |
| 3. | Acetic acid | c. | Strong base |
| 4. | Ammonium hydroxide | d. | Weak acid |
Name the base which is present in a window cleaner.
Al(OH)3 & Zn(OH)2 are not alkalis.
