An aqueous solution turns red litmus blue. Excess addition of which of the following solutions would reverse the change?

Phenolphthalein is a synthetic indicator and its color in acidic and basic solutions, respectively are:

In an experiment to test the pH of a given sample using pH paper, four students recorded the following observations :

Which of the following is a use of sodium hydroxide?

Milk of magnesia Mg(OH) 2 is a/an:

Which one of the following types of medicines is for treating indigestion ?

Which substance when dissolved in water changes red litmus paper to blue.

Which pair of indicators shows no colour change when used with acidic solutions?

One of the following that does not inject an acidic liquid into the skin through its sting. This is

The acid used in the making of vinegar is:

On washing with soap, a turmeric stain on the cloth turns to red because

Which base is employed as the electrolyte in alkaline batteries?

In which of the following chemical processes does the reaction mixture become hot?

Which of the following acid is present in the sting of an ant?

Which of the following set of substances contain acids only?

To protect tooth decay we are advised to brush our teeth regularly. The nature of the toothpaste commonly used is:

Which of the following set of substances contain acids only?

A drop of a liquid sample was put on the pH paper. The color of the pH paper turned blue. The liquid sample could be that of:

Manisha took a little bit of soil from her garden and mixed it with water. When she dipped a blue litmus in it, the litmus turned red. By adding which of the following to her garden will she get better plant growth?

Which of the following is a use of  Al(OH)3