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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
Oxides of metals are acidic in nature.
Write the balanced equation for the reaction of:
A named acid and a named alkali.
Bases are soapy to touch when they are dry.
Write any four uses of bases.
Look at figure which shows solutions taken in test tubes A, B, C and D. What colour is expected when a piece of red litmus paper is dropped in each test tube? Nature of the solutions is given in the table for your help.
| Test tube | Nature of Solution | Change in colour of red litmus |
| A | Neutral | |
| B | Basic | |
| C | Acidic | |
| D | Neutral |
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.
Water-soluble bases are called ______.
Match the following:
| 1. | Wasp sting | a. | Milk of magnesia |
| 2. | Common salt | b. | Acetic acid |
| 3. | Organic acid | c. | Sodium chloride |
| 4. | Antacid | d. | Vinegar |
Al(OH)3 & Zn(OH)2 are not alkalis.
NaOH & KOH are strong bases.
