Which indicator will produce a pink colour on adding a few drops of sodium hydroxide solution
Blue litmus
Phenolphthalein
Turmeric paper
China rose indicator
One of the following is not an organic acid. This is :
Acetic acid
Formic acid
Citric acid
Carbonic acid
A yellow stain of turmeric containing curry on a white shirt turns red when soap solution is scrubbed on it. This shows that soap solution is
Basic
Acidic
Neutral
Sour
The substance which can turn blue litmus to red is
Baking soda
Milk of magnesia
Lemon juice
Calamine solution
The acid produced naturally in our stomach is :
Hydrochloric acid
Sulphuric acid
Which of the following is a mineral acid
Oxalic acid
When an ant sting a person, it injects a liquid into the skin of the person which contains
Calcium hydroxide
Potassium hydroxide
Which of the following is a strong base
Sodium hydroxide
Sodium Carbonate
Ammonium hydroxide
The salt which will give an acidic solution on dissolving in water
Sodium sulphate
Ammonium sulphate
Sodium carbonate
Sodium chloride
The dilute solution of which of the following are not harmful to drink
Magnesium hydroxide
Potassium carbonate
Sodium hydrogencarbonate
