Which indicator will produce a pink colour on adding a few drops of sodium hydroxide solution

One of the following is  a medicine for indigestion. This is :

Which of the following is a strong base

When an ant stings a person, it causes a burning pain. which of the following should be rubbed on the stung area of skin to get relief

Which of the following does not cause acid rain

With which of the following 'Milk of Magnesia' be reacted so as to have a neutralisation reaction

The salt which will give an acidic solution on dissolving in water

Which one of the following salts will give a basic solution on dissolving in water

The acid produced naturally in our stomach is :

When a basic solution is added to an indicator, a green colour is produced. The indicator should be