Acids
Acidity is a characteristic property of acids.
Acidic substances are usually very sour. Apart from hydrochloric acid, there
are many other types of acids around us. Citrus fruits like lemons and oranges
contain citric and ascorbic acids while tamarind paste contains tartaric
acid.In fact, the word ‘acid’ and ‘acidity’ are derived from the Latin word ‘acidus’
which means sour. If you dip a blue litmus paper into an acid, it will turn red
while a red litmus paper will not change colour. Acids also liberate dihydrogen
when they react with some metals.
What is the taste of lemon, oranges and grapes?
a) bitter
b) salty
c) sour
d) sweet
Why many fruits like lemon, oranges and grapes taste sour?
a) they contain acids
b) they contain base
c) they contain sugar
d) they contain salts
From which language the word “Acid” is derived?
a) Greek
b) French
c) Persian
d) Latin
The word acid is derived from Latin word “ acidus”. What does it means?
a) bitter
b) burning
c) sour
d) salty
Which of the following is/are produced by an acid when ionizes in water?
a) OH- ion
b) H+ ion
c) Cl- ion
d) Na+ ion
