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प्रश्न
Choose the most appropriate answer from
(SO2, SiO2, Al2O3, CO, MgO, Na2O)
A basic oxide.
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उत्तर
MgO
संबंधित प्रश्न
Why indicator does not get affected by salt?
Oxides of metals are acidic in nature.
Give the significance of pH of soil in agriculture.
Which of the following is not a base?
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 |
On adding phenolphthalein indicator to a colourless solution, no change is observed. What is the nature of this solution?
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.
Bases are chemical substances that are corrosive and ______ in taste.
Which of the following solution is soapy to touch?
______ alkali has a relatively high percentage of alkali in its aqueous solution.
