Question

Substance Liquid PH of

liquid Solid Dissolve pH of

solution

Acid

effect

Alkaline

effect

A Yes 7 No change No change

B No Yes Yes 2 No change Neutralises

alkali

C No Yes No 12 Neutralises

acid No change

D Yes 1 No change Neutralises

alkali

E No Yes Yes 13 Neutralises

acid No change

F Yes 14 Neutralises

acid No change

i) An insoluble base among the following is

a) A b) B c) C d) D

ii) Substance D can be

a) Baking soda b) Battery acid

c) Milk of magnesia d) Ammonia

iii) A farmer found that the pH of the soil in his field is 4.2. Any two substances from the given table

which he should mix with soil to adjust its pH can be

a) A and B b) C and E

c) E and F d) (b) and (c) both

iv) If the pH increases from 7 to 14, what does it show in terms of OH-

ion concentration?

a) increases b) decreases c) no change

v) The tooth enamel starts to corrode when the pH becomes

a) <5.5 b) >5.5 c) <5 d) <6​

Answer 1

Answer:

what is displacement reaction when you are so