Question

please answer this question... class-:7th, lesson-:5, don't post irrelevant answers or spam .. I will report you but if anyone answered correctly I will mark as brainlist.. please help me​

Answer 1

Explanation:

1) We will identify water by using litmus paper in dilute NaOH red litmus paper will turn blue, this means dil. NaOH is a base and in HCl blue litmus paper will turns to red, this indicates HCl is an acid. but in water litmus paper will not change it's colour as it is neutral.

2) (a) strongly acidic- solution Q

strongly basic- solution R

(b) solution P and R will show neutralisation reacts.

Answer 2

Answer:

1.By using litmus paper will check the solution

Explanation:

1.As we know that litmus paper change its colour in acidic and basic solutions. And don't show any change in neutral solution.

Solution. litmus test

Red litmus. Blue litmus

a. Dil. HCl(acidic) stays red. turns red

b. Water. (neutral). no effect. no effect

c. Dil. NaCl(basic) turns blue. stay blue

2.(a) P is highly basic solution

R is highly acidic solution

(b) Q and S