HARD
Earn 100

Write the chemical reactions taking place at cathode and anode during the preparation of sodium hydroxide.

Important Questions on Compounds of Common Use

MEDIUM
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
The reaction of zinc with excess of aqueous alkali, evolves hydrogen gas and gives
HARD
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
What is brine? What is the product formed when electricity is passed through this brine? Write the balanced chemical equation for the above reaction.
 
MEDIUM
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
Identify the correct representation of the reaction occurring during the chloralkali process.
HARD
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
How is sodium hydroxide manufactured in industries? Name the process. In this process, a gas X is formed as a by-product. This gas reacts with lime water to give a compound Y, which is used as a bleaching agent in the chemical industry. Identify X and Y and write the chemical equation of the reaction involved.
MEDIUM
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
The set of products formed when electricity is passed through brine is:
MEDIUM
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide

Products (X and Y) of the following reactions (I and II) are :
I. 2NaOH(Cold and dil.)+Cl2⟶NaCl+X+H2O

II. 6NaOH(Hot and conc.)+3Cl2⟶NaCl+Y+3H2O

HARD
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
Suppose you have to determine the percentage of carbon dioxide in a sample of a gas available in a container. Which is the best absorbing material for the carbon dioxide?
MEDIUM
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
When the concentrated aqueous solution of substance X is electrolysed, then NaOH, Cl2 and H2 are produced. Name the substance X. What is the special name of this process?
MEDIUM
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
Which of the following dissolves in hot conc. NaOH solution?
EASY
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
Which of the following is not soluble in NaOH?
HARD
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
Dry pellets of base 'X' when kept in open absorb moisture and turn sticky. The compound is also formed by chlor-alkali process. Write chemical name and formula of X. Describe chlor-alkali process with a balanced chemical equation. Name the type of reaction that occurs when X is treated with dilute hydrochloric acid. Write the chemical equation. While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid?
EASY
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
Why is the electrolysis of a concentrated solution of sodium chloride known as Chlor-alkali process?
MEDIUM
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide

Represent the union of two sets by Venn diagram for each of the following.

X={x | x is a prime number between 80 and 100}

Y={y | y is an odd number between 90 and 100}

HARD
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide

When a substance A reacts with water it produces a combustible gas B and a solution of substance C in water. When another substance D reacts with this solution of C, it also produces the same gas B on warming but D can produce gas B on reaction with dilute sulphuric acid at room temperature. A imparts a deep golden yellow colour to a smokeless flame of Bunsen burner. A, B, C and D respectively are

                                                                                               

MEDIUM
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
The products of chlor-alkali process are:
EASY
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
When carbon monoxide is passed over solid caustic soda heated to 200°C, it forms
EASY
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
State two uses of sodium hydroxide.
MEDIUM
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
A dry pellet of a common base 'X' when kept in open absorbs moisture and turns sticky. The compound is also a by-product of chlor-alkali process. Identify 'X', what type of reaction occurs when 'X' is treated with an acidic oxide? Write a balanced chemical equation for one such reaction.
EASY
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
Explain why chlorine is used for sterilising drinking water supply.
MEDIUM
Science>Chemistry>Compounds of Common Use>Sodium Hydroxide
Which sequence of reactions shows correct chemical relation between sodium and its compounds ?