A certain solution does not change the colour of any indicator. This solution is most likely to be
Vinegar solution
Baking soda solution
Common salt solution
Washing soda solution
Which of the following is a strong base
Calcium hydroxide
Sodium hydroxide
Sodium Carbonate
Ammonium hydroxide
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
Lemon juice
Formic acid solution
The discomfort caused by indigestion due to overeating can be cured by taking:
Baking soda
Vinegar
lemon juice
Caustic soda
The dilute solution of which of the following are not harmful to drink
Magnesium hydroxide
Potassium carbonate
Sodium hydrogencarbonate
Sodium carbonate
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 indicator which give red or pink colour on adding a basic solution are
China rose indicator
Turmeric paper indicator
Phenolphthalein indicator
Blue litmus indicator
When an ant sting a person, it injects a liquid into the skin of the person which contains
Acetic acid
Formic acid
Potassium hydroxide
Which indicator will produce a pink colour on adding a few drops of sodium hydroxide solution
Blue litmus
Phenolphthalein
Turmeric paper
One of the following is not an organic acid. This is :
Citric acid
Carbonic acid
