Here we are going to provide class 12 chemistry chapter 19 Chemical Industries in Pakistan solved MCQs that help Sindh board students in their exam.
12 Class Chemistry Chapter 19 MCQs with Answers
This 2nd year’s chemistry chapter 19 Sindh board MCQs are also helpful for Karachi, Hyderabad, Larkana, and Sukkur board students in their examination preparation.
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1. pH value of soil is maintained at ___________ by the addition of fertilizer for optimum growth and health of the plant
a) 44385
b) 44230
c) 44291
d) 44543
Answer: a) 44385
2. The chemical that kills weeds is called pesticides
a) TRUE
b) FALSE
Answer: a) TRUE
3. Soap and detergents are the source of organic pollutants like:
a) Sulphonated hydrocarbons
b) Polyphosphates
c) Glycerol
d) All of the above
Answer: d) All of the above
4. What are the polymers called whose monomers are bonded to each other by -C(O)-N—C(O)-N-link
a) Polyesters
b) Polythene
c) Polyamides
d) Terylene
Answer: c) Polyamides
5. Of the following, which one is classified as a polyamide
a) Polythene
b) Nylon
c) Polystyrene
d) All of the above
Answer: b) Nylon
6. What will be the product formed when benzene -1, 4-dicarboxylic acid and ethan-1 ,2-diol react together
a) Polyester and terylene
b) Polyster
c) Polyamides
d) Terylene
Answer: a) Polyester and terylene
7. In order to produce silk threads, silkworms digest ________ from mulberry trees.
a) Leaves
b) Twigs
c) Cellulose
d) Proteins
Answer: c) Cellulose
8. Some plastics become soft on heating and become hard upon cooling and never show change in their properties are known as _________.
a) Thermoplastic
b) thermosetting
c) thermoregulation
d) thermodynamic
Answer: a) Thermoplastic
Conclusion
The topic of this post is class 12 chemistry chapter 19 MCQs with solved answers for board exam preparation Additionally we add this post into the 12th class category.