Acids, Bases An...

In the table given below, match the bases in the first column with their applications mentioned in the second column.
 

The solution of a strong acid is mixed with an equal amount of a solution of a strong base. The resultant mixture is then tested with a neutral litmus paper. What will be the colour change observed in the litmus paper?

If pH of a solution is 1.5, then what is the nature of the solution?

In which of the following solutions will a strip of cloth, soaked in onion juice, lose its odour when added to it?

Which of the following oxides, when dissolved in water, gives a solution which turns blue litmus red?

Which of the following statements are correct about an aqueous solution of an acid or a base having equal concentrations?

(i) Higher the pH, stronger the acid. (For pH < 7)
(ii) Higher the pH, weaker the acid. (For pH <7)
(iii) Lower the pH, stronger the base. (For pH > 7)
(iv) Lower the pH, weaker the base. (For pH > 7)

The correctly matched pairs are:

I. Caustic soda - Sodium thiosulphate
II. Lime - Sodium hydroxide
III. Washing soda - Sodium carbonate
IV. Baking soda - Sodium bicarbonate

Read the following passage and select the option that correctly fills the blanks in the given statements.

Milk is slightly acidic because it contains __(i)__, which is a __(ii)__ ion donor. When milk turns sour, __(iii)__ is converted to __(i)__. During summer, the milkman adds __(iv)__ to the milk, which makes it slightly __(v)__ and delays the process of souring of the milk.

Lactic acid is present in which of the following food items?