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 dilute solution of which of the following are not harmful to drink
Magnesium hydroxide
Potassium carbonate
Sodium hydrogencarbonate
Sodium carbonate
With which of the following 'Milk of Magnesia' be reacted so as to have a neutralisation reaction
Baking soda
Vinegar
Ammonia solution
Quicklime
When an ant sting a person, it injects a liquid into the skin of the person which contains
Calcium hydroxide
Potassium hydroxide
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
The salt which will give an acidic solution on dissolving in water
Sodium sulphate
Ammonium sulphate
Sodium chloride
Which of the following does not cause acid rain
Sulphur dioxide
Carbon monoxide
Carbon dioxide
Nitrogen dioxide
The discomfort caused by indigestion due to overeating can be cured by taking:
lemon juice
Caustic soda
