Advertisements
Advertisements
प्रश्न
Name a sodium compound which is a constituent of many dry soap powders.
उत्तर
Sodium carbonate decahydrate `(Na_2 CO_3.10H_2O),`popularly known as washing soda, is a constituent of many dry soap powders.
APPEARS IN
संबंधित प्रश्न
Name an indicator which is pink in alkaline solution but turns colourless in acidic solution.
Name the acid-base indicator extracted from lichen.
Name the gas evolved when zinc granules are treated/heated with:
sodium hydroxide solution
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:
(a) wasp
(b) ant
(c) honey bee
(d) nettle leaf hair
Give two examples of the following:
oxy-acid
You are supplied with five solutions: A, B, C, D and E with pH values as follows: A = 1.8, B = 7, C = 8.5, D = 13, and E = 5
Classify these solutions as neutral, slightly or strongly acidic and slightly or strongly alkaline.
Which solution would be most likely to liberate hydrogen with magnesium powder. Give a word equation for each reaction.
Since metal carbonate and metal bicarbonate are basic, they react with acids to give salt and water with the liberation of ______.
Match the chemical substances given in Column (A) with their appropriate application given in Column (B)
| Column (A) |
Column (B) |
| (A) Bleaching powder | (i) Preparation of glass |
| (B) Baking soda | (ii) Production of H2 and Cl2 |
| (C) Washing Soda | (iii) Decolourisation |
| (D) Sodium chloride | (iv) Antacid |
State whether the following statements are true or false. Correct the false statements.
Lemon water is basic in nature.
Exlain the following:
\[\ce{H3PO3}\] is not tribasic acid.
