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प्रश्न
Write the chemical name and formula of caustic soda.
उत्तर
The chemical name of caustic soda is sodium hydroxide. Its formula is NaOH.
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संबंधित प्रश्न
A student Prepared 20% sodium hydroxide solution in a beaker to study saponification reaction. Some observations related to this are given below :
(I) Sodium hydroxide solution turns red litmus blue
(II) Sodium hydroxide readily dissolves in water
(III) The beaker containing solution appears cold when touched from outside
(IV) The blue litmus paper turns red when dipped into the solution
The correct observations are :-
(A) I, II and IV
(B) I, II and III
(C) only III and IV
(D) only I and II
The electrolysis of an aqueous solution of sodium chloride gives us three products. Name them.
During the electrolysis of a saturated solution of sodium chloride, where is:
hydrogen formed?
During the electrolysis of a saturated solution of sodium chloride, where is:
sodium hydroxide formed?
A student prepared 20% sodium hydroxide solution in a beaker containing water. The observations noted by him are given below.
I. Sodium hydroxide is in the form of pellets.
II. It dissolves in water readily.
III. The beaker appears cold when touched from outside.
IV. The red litmus paper turns blue when dipped into the solution.
The correct observations are:
(A) I, II, and III
(B) II, III and IV
(C) III, IV and I
(D) I, II and IV
Sodium hydroxide is used ____________.
Sodium hydroxide turns phenolphthalein solution.
NaOH is obtained by electrolysis of ___________.
Sodium hydroxide is termed an alkali while Ferric hydroxide is not because ______.
While electrolysing water before passing the current some drops of an acid are added. Why? Name the gases liberated at cathode and anode. Write the relationship between the volume of gas collected at anode and the volume of gas collected at cathode.
