Advertisements
Advertisements
Question
Choose the correct alternative and rewrite the following sentence.
Phenolphthalein is ___________ type of indicator.
Options
Natural Indicator
Universal Indicator
Synthetic Indicator
None of the above.
Advertisements
Solution
Synthetic Indicator
APPEARS IN
RELATED QUESTIONS
| Column A | Column B | ||
| i | eosin | 1 | losing hydrogen |
| ii | oxidation | 2 | synthetic indicator |
| 3 | losing oxygen | ||
| 4 | natural indicator |
Name one natural source of the following acids:
Lactic acid
Complete and balance the following chemical equations:
CuO (s) + HCI (aq) →
What happens when an acid reacts with a base?
Which element is common to all acids?
On adding dilute hydrochloric acid to copper oxide powder, the solution formed is blue-green.
On the basis of the above reaction, what can you say about the nature of copper oxide?
What ions are present in the solutions of following substances? (write the symbols only)
Magnesium hydroxide
A first-aid manual suggests that vinegar should be used to treat wasp stings and baking soda for bee stings. What does this information tell you about the chemical nature of:
bee stings?
Hydrochloric acid reacts with a metal X to form a gas Y which burns with a 'pop' sound. Sodium hydroxide solution also reacts with the same metal X (on heating) to form the same gas Y.
Write the chemical equation of the reaction of metal X with (i) hydrochloric acid, and (ii) sodium hydroxide solution.
What is the chemical formula of baking soda?
What is the chemical formula of washing soda?
What is the chemical formula of bleaching powder?
Is PbO2 a base or not? Comment.
Write the chemical formula of washing soda. How can it be obtained from baking soda? List two industries in which washing soda is used for other purposes than washing clothes.
Are all acids corrosive in nature? Name a few acids which are non-corrosive and may be part of our food.
Write notes on the properties of acids.
A substance 'X' is used as a building material and is insoluble in water. When it reacts with dil. HCl, it produces a gas which turns lime water milky.
- Write the chemical name and formula of 'X'.
- Write chemical equations for the chemical reactions involved in the above statements.
What property do acids and bases have in common? Explain it with an example.
Consider the following salt:
YCl
What would be the pH of the solution if, in YCl, Y is sodium? Give a reason for your answer.
For each of the salt: A, B, C and D, suggest a suitable method of its preparation.
C is a soluble salt of copper.
