Question

Q1.Fill in the blanks (8 Marks)
(a) The most commonly used natural indicator is__________________________
(b) Aqueous solution of baking soda is bitter in taste and feels soapy on touching because it
contains______________________________
(c) __________________are used to test whether a substance is acidic or basic in nature.
(d) ____________________change their colour when added to a solution containing an
acidic or basic substance.
(e) Lemon juice, orange juice taste sour because they contain_______________________
(f) Turmeric and litmus are _________ acid-base indicators..
(g) In neutralization reaction heat is always___________________________________.
(h) The correct way of making a solution of acid in water is to _________

Answer 1

Answer:

(a) litmus

(b) base

(c) indicator

(d) indicator

(e) acid

(f) neutral

(g) natural

(h) evolved

Answer 2

Explanation:

a.litmus

b.basic substance

c.indicators

d.indicators

e.acids

f.natural

g.evolved

h.acidic

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