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Worksheetsacids bases
Total questions: 10
Worksheet time: 4mins
Colour of litmus in ammonium hydroxide
blue
red
orange
black
Blue litmus paper is held in dry HCl fume,
Turn to red
Turn to blue
Turn to green
no change
Soluble base in water is,
metallic oxide
alkali
metallic hydroxide
none of the above
Salt of carbonic acid and zinc will be a
neural salt
acidic salt
basic salt
not reacts
When a small piece of sodium is added to water,
It will explodes with fire
vigorous movement of metal piece
Change the phenolphthalein added into pink
all of the above
Al2O3 reacts with NaOH to form
Salt and H2
Salt and CO2
Salt and water
None
Universal indicator in a reaction of adequate amount of acid and base,
red
purple blue
green
orange
Methyl orange added to soda water
turns blue
turns purple
turns red
turns green
Acid base indicator for visually impaired child
Litmus
vanilla essence
turmeric
universal indicator
pH of rain water in a pollution free area
10
5.6
7
7,4
