Question

RK
Q.1 To protect tooth decay we are advised to brush our teeth regularly. The
nature of tooth paste used is-
a) acidic b) neutral c) basic d) corrosive
Q.2 A compound x in aqueous solution turns red litmus solution into blue
Identify 'x
a) Hydrochloric acid b) Ammonium hydroxide sol
c) Sodium chloride solution d) Vinegar
Q.3 Which one is stronger acid with pH=5 or with pH=2.
2.4 What happens when chlorine is passed over dry slaked lime.
(CBSE-2010, 2011)
5 Dry HCl gas does not change the colour of dry blue litmus paper why?
-6 Fill in the blanks-
The chemical formula of plaster of paris is
Neutral substances have a pH=​

Answer 1

Answer:

Q. 1 is basic

Q. 2 is ammonium hydroxide sol

Q. 3 is PH 2

Explanation:

I know this much only

sorry