Question

sub-parts in these questions.
17. Read the following table and answer any four questions from 17(a) to 17(e).
(1 x4]
Alkaline effect
Substance Liquid
pH of
Acid effect
Yes
pH of
Solid Dissolve
liquid
solution
No change
A
Yes
No change
7
B
No
Yes
Neutralises alkali
Yes
2
No change
C
No change
No
Yes No
12
Neutralises acid
D
Neutralises alkali
1
No change
E
No
Yes
Yes
13 Neutralises acid No change
F
Yes
14
Neutralises acid No change
(a) An insoluble base among the following is
(i) A
(ii) B
(iii) C
(iv) D
(b) Substance D can be
(i) baking soda (ii) battery acid (iii) milk of magnesia (iv) ammonia
(c) A farmer found that the pH of soil in his fields is 4.2. Any two substances from the
above which he should mix with soil to adjust its pH can be
(i) A and B (ii) C and E
(iii) E and F
(iv) (ii) and (iii) both
(d) If the pH increases from 7 to 14, what does it show in terms of OH- ion
concentration?
(e) The tooth enamel starts to corrode when the pH becomes
(i) <5.5
(ii) >5.5
(iii) <5
(iv) <6.
11​

Answer 1

Answer:

I don't know about your question