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प्रश्न
Name the salt which is used as preservative in pickles, and in curing meat and fish.
उत्तर
Common salt (NaCl) is used as a preservative in pickles and in the curing (or preservation) of meat and fish.
APPEARS IN
संबंधित प्रश्न
State one relevant observation for the following:
Anhydrous calcium chloride is exposed to air for some time.
What name is given to the common salt which is mined from underground deposits? How was this salt formed?
Write the names, formulae and colours of any two hydrated salts.
Give one example of a salt which gives an aqueous solution having:
pH more than 7
The pH values of three solutions A, B and C are given in the table. Answer the folloiwng questions:
| Solution | pH value |
| A | 12 |
| B | 2 |
| C | 7 |
Which solution will liberate CO2 when reacted with sodium carbonate?
State what would you observe when :
The salt ferric chloride is exposed to the atmosphere.
Name gases which has a sour taste.
Differentiate hydrate and anhydrous salts with examples.
The Salt Story
From: The New Indian Express 9 March 2021
The salt pans in Marakkanam, a port town about 120 km from Chennai are the third largest producer of salt in Tamil Nadu. Separation of salt from water is a laborious process and the salt obtained is used as raw materials for manufacture of various sodium compounds.
One such compound is Sodium hydrogen carbonate, used in baking, as an antacid and in soda acid fire extinguishers.
The table shows the mass of various compounds obtained when 1litre of sea water is evaporated.
| COMPOUND | FORMULA | MASS OF SOLID PRESENT /g |
| Sodium Chloride | NaCl | 28.0 |
| Magnesium Chloride | MgCl2 | 8.0 |
| Magnesium Sulphate | MgSO4 | 6.0 |
| Calcium Sulphate | CaSO4 | 2.0 |
| Calcium Carbonate | CaCO3 | 1.0 |
| TOTAL AMOUNT OF SALT OBTAINED | 45.0 | |
How many grams of Magnesium Sulphate are present in 135g of solid left by evaporation of sea water?
How is normal salt obtained? Give a suitable reaction.
