Question

(iii). You are given three samples A, B and C to identify whether they are acidic, basic or neutral in nature.How many minimum number of litmus strips will be enough to perform this activity: *
A. Only one strip will be enough.
B. At least two strips will be needed.
C. Three separate strips will be needed.D. none of the above
D. none of the above

This is a required question
(iv). Based on the results of this experiment, a salt would be formed when: *
A. NaCl is combined with NaOH
B. H2O is combined with HCl
C. KOH is combined with HCl
D. HCl is combined with H2SO4

This is a required question
(v). In setting up an aquarium, several factors must be considered before introducing fish.Which of the following factors could be tested using litmus paper? *
Salinity
B. Acidity
C. Chlorination
D. Temperature​

Answer 1

Answer:

Only one strip will be enough

KOH + HCL

Acidity

Explanation:

1) Take only one strip of any color. example, take a red strip. on coming in contact with base, the color would change to blue. use that strip to test acid. it will become red again. now put it in the neutral solution and it won't change color

2) KOH + HCL forms KCL which is a salt

3) Litmus paper tests acidity and basic nature