Advertisements
Advertisements
प्रश्न
Give one example of a salt which gives an aqueous solution having:
pH equal to 7
Advertisements
उत्तर
Sodium chloride (NaCl)
APPEARS IN
संबंधित प्रश्न
Write the chemical name and formula of common salt.
Name the raw material used for the production of caustic soda.
What happens when copper sulphate crystals are heated strongly? Explain with the help of an equation.
What happens when a few drops of water are added to anhydrous copper sulphate? Explain with the help of an equation.
Explain why chlorine is used for sterilising drinking water supply.
The products of chloro-alkali process are ______.
The salt whose aqueous solution will have no effect on either red litmus or blue litmus is ______.
Give one example of a salt which gives an aqueous solution having:
pH more than 7
Consider the following salts:
Na2CO3, NaCl, NH4Cl, CH3COONa, K2SO4, (NH)2SO4
Which of these salts will give:
- acidic solutions?
- neutral solutions?
- basic solutions (or alkaline solutions)?
Name a salts whose solubility increases with temperature.
Name a salt whose solubility decreases with temperature.
Name two salts which are neutral when dissolved in water.
You are asked to prepare hard water in your laboratory. Select a group from the following groups of salts, any salt of which you may dissolve in distilled water to obtain hard water.
(A) NaCl; Na2SO4; KCl
(B) NaCl; CaCl2; KCl
(C) CaCl2; CaSO4; MgSO4
(D) Na2SO4; CaSO4; MgSO4
Hard water required for an experiment is not available in a school laboratory. However, following salts are available in the laboratory. Select the salts which may be dissolved in water to make it hard for the experiment.
|
(1) |
Calcium Sulphate |
(2) |
Sodium Sulphate |
|
(3) |
Calcium Chloride |
(4) |
Potassium Sulphate |
|
(5) |
Sodium Hydrogen Carbonate |
(6) |
Magnesium Chloride |
(A) 1, 2 and 4
(B) 1, 3 and 6
(C) 3, 5 and 6
(D) 2, 4 and 5
Fill in the blank
___________ is the phenomenon by which hydrated salts on exposure to dry air, lose their water of crystallization and crumble to powder.
Name a colourless gas which bleaches.
Name the anion present in the following compound:
Compound A, when warmed with concentrated sulphuric acid, gives a gas which fumes in moist air and which gives dense white fumes with ammonia.
Select the correct answer from A, B, C, D and E.
A compound which in the aqueous solution state, is neutral in nature.
