Discussion
Assertion (A): Highly plastic clays are usually blended with less plastic materials.
Reason (R): Plasticity and drying shrinkage rise together, and excessive shrinkage causes cracking.
Answer: C
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the mechanism. The water film that gives plasticity is lost on drying, and the particles close up by that amount - so the more plastic the body, the more it shrinks and the more likely it is to crack. Blending in a less plastic material trades some workability for a body that survives drying.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development