Question

UN
Слацрпс. .
6.
Mark 'T' if the statement is true and 'F' if it is false;
(i) Nitric acid turn red litmus blue. (T/F)
(ii) Sodium hydroxide turns blue litmus red. (T/F)
(iii) Sodium hydroxide and hydrochloric acid neutralise each other and
form salt and water. (T/F)
(iv) Indicator is a substance which shows different colours in acidic
and basic solutions. (T/F)
(v) Tooth decay is caused by the presence of a base. (T/F)
U-​

Answer 1

Explanation:

1) False , Nitric acid turns blue litmus to red because it is an acid .

2) False , Sodium Hydroxide is a base so it will turn red litmus to blue .

3) True

4) True

5) False , Tooth decay is caused by the presence of acid .

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Answer 2

$\boxed{i}\sf{False}$

$\boxed{ii}\sf{False}$

$\boxed{i}\sf{True}$

$\boxed{i}\sf{True}$

$\boxed{i}\sf{False}$