Advertisements
Advertisements
Question
Give the names and formulae of two strong acids.
Advertisements
Solution
- Hydrochloric acid (HCl)
- Sulphuric acid (H2SO4)
APPEARS IN
RELATED QUESTIONS
Name the source from which litmus solution is obtained. What is the use of this solution?
Tooth decay is caused by the presence of a base.
Dorji has a few bottles of soft drink in his restaurant. But, unfortunately, these are not labelled. He has to serve the drinks on the demand of customers. One customer wants acidic drink, another wants basic and third one wants neutral drink. How will Dorji decide which drink is to be served to whom?
Name the gas evolved when dilute HCl reacts with sodium hydrogencarbonate. How is it recognised?
Name one natural source of the following acid:
Tartaric acid
What are organic acids?
A white shirt has a yellow stain of curry. When soap is rubbed on this shirt during washing, the yellow stain turns reddish-brown. On rinsing the shirt with plenty of water, the reddish-brown stain turns yellow again.
- Name the natural indicator present in curry stain.
- Explain the changes in colour of this indicator which take place during washing and rinsing the shirt.
- What is the nature of soap (acidic/basic) as shown by the indicator present in curry stain?
Give the names and formulae of two strong bases.
One of the following does not inject an acidic liquid into the skin through its sting. This is:
It has been found that rubbing vinegar on the stung area of the skin of a person gives him relief. The person has been stung by ______.
Name a sodium compound which is a constituent of many dry soap powders.
Write balanced equation to satisfy the following statement:
\[\ce{Acid + Carbonate or bicarbonate -> Salt + water + Carbon dioxide}\]
Match the pairs.
| Group A | Group B |
| 1. Tamarind | a. Acetic acid |
| 2. Curd | b. Citric acid |
| 3. Lemon | c. Tartaric acid |
| 4. Vinegar | d. Lactic acid |
State whether the following statement is true or false. Correct the false statement.
Lemon water is basic in nature.
While playing in a park, a child was stung by a wasp. Some elders suggested applying paste of baking soda and others lemon juice as remedy. Which remedy do you think is appropriate and why?
You are provided with four test tubes containing sugar solution, baking soda solution, tamarind solution, salt solution. Write down an activity to find the nature (acidic/basic/neutral) of each solution.
Curd contains ______ acid.
Exlain the following:
\[\ce{H3PO3}\] is not tribasic acid.
