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प्रश्न
What is the term defined by the following?
A base which is soluble in water.
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उत्तर
Alkali
संबंधित प्रश्न
Give one example in the following case:
A basic oxide which is soluble in water.
Give one example in the following case:
A hydroxide which is insoluble in water.
Salts are neutral.
Write the balanced equation for the reaction of:
A named acid and a named alkali.
Write any four uses of bases.
A solution changes the colour of turmeric indicator from yellow to red. The solution is ______.
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 |
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 |
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 |
Choose the most appropriate answer from
(SO2, SiO2, Al2O3, CO, MgO, Na2O)
A basic oxide.
