Question

Correct the statement if it is wrong
a) Indicators show different colours in
acidic and basic solutions.
b)Sodium Hydroxide turns blue litmus
red.
c) Tooth decay is caused by the presence
of base

SCERT Class 7 Telangana, Physical Science Chapter 2 Acids And Bases

Answer 1

A- is correct, B- is false correct statement -sodium hydroxide turn red litmus blue C- tooth decay is caused by acid

Answer 2

Answer:

A. correct, b.sodium hydroxide turns red litmus blue c. Tooth decay is caused by acdi.