Discussion
State whether the following is true or false.
An optical brightener removes the yellow colouring matter from a fabric.
Answer: C
It leaves the colouring matter exactly where it is and masks it with added blue light. Bleaching is the operation that actually destroys the coloured compounds. The two operations are complementary rather than alternative.
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