(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

The salt solution which does not react with ammonium hydroxide is :

The organic compound which undergoes substitution reaction is :

(A) `C_2H_2`

(B) `C_2H_4`

(C) `C_10H_18`

(D) `C_2H_6`

Write a balanced chemical equation for the reaction of sodium hydroxide solution with iron (III) chloride solution

Give a reason for Conductivity of dilute hydrochloric acid is greater than that of acetic acid

Ethane burns in oxygen to form CO₂ and H₂O according to the equation:

`2C_2H_6+7O_2 -> 4CO_2 + 6H_2O`

If 1250 cc of oxygen is burnt with 300 cc of ethane.

Calculate:

1) the volume of `CO_2` formed

2) the volume of unused `O_2`

Three solutions P, Q and R have pH value of 3.5, 5.2 and 12.2 respectively. Which one of these is a:

1) Weak acid?

2) Strong alkali?

What do you understand by the term, acid?

Water is never added to acid in order to dilute it why?

Define the term ‘basicity’ of an acid.

Give two examples of the following:

oxy-acid

Give two examples of the following:

hydracids

Give two examples of the following:
monobasic acid

Name the acid present in vinegar.

Give a balanced equation for reaction of nitrogen dioxide with water.

How many types of salts does dibasic acid produce when it reacts with caustic soda solution? Give equation(s)

Explian the following:

Dil. HCl acid is stronger than highly concentrated acetic acid. 

Name an acid used to flavor and preserve food.

Name an acid used in a drink.

Name an acid used to remove ink spots.

Name an acid used as an eyewash.