Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
111 views
in GK by (114k points)
closed by

Due to improper/indiscriminate disposal of old and used computers or their parts, which of the following are released into the environment as e-waste?

1. Beryllium

2. Cadmium

3. Chromium

4. Heptachlor

5. Mercury

6. Lead

7. Plutonium

Select the correct answer using the codes given below.


1. 1, 3, 4, 6 and 7 only
2. 1, 2, 3, 5 and 6 only
3. 2, 4, 5 and 7 only
4. 1, 2, 3, 4, 5, 6 and 7

1 Answer

0 votes
by (115k points)
selected by
 
Best answer
Correct Answer - Option 2 : 1, 2, 3, 5 and 6 only

The correct answer is 1, 2, 3, 5, and 6 only.

  • The disposed off electrical or electronic devices are termed as electronic waste or e-waste.
  • The discarded computers, CPUs, etc. contain harmful materials such as lead, cadmium, beryllium, etc.
  • Following are some examples of the e-waste components:
  1. Cathode ray tubes
  2. Printed circuit boards
  3. Chips and other gold plated components
  4. Plastics from printers, keyboards, monitors, etc.
  5. Computer wires

The table mentioned below shall provide some of the prominent elements found in the e-wastes and their harmful effects:

Elements Harmful effects
1. Lead affects the nervous system that leads to behavioural changes, lower IQ, also has a negative impact on kidneys
2. Mercury exposure to mercury causes dermatitis, sensory impairment, memory loss, muscle weakness, reduced fertility, etc.
3. Cadmium it is the cause of severe lung and kidney damages, and in children, it may cause learning and neuromotor defects
4. Chromium  it has carcinogenic properties and may also result in damaging of DNA.
5. Beryllium  it can cause beryllium sensitization, chronic beryllium disease, acute beryllium disease, and lung cancer.
6. PVC (Polyvinyl chloride) the bioaccumulation of chlorine over a period of time results in air, water, and soil pollution; and can lead to reproductive and developmental health effects.
7. PFOA (Perfluorooctanoic  acid) it has severe impact on the pregnant women as it may lead to spontaneous abortions, stillbirth, low birth weight, etc.
8. Sulphur it can damage the heart, kidneys, and liver.
9. BFRs (Brominated Flame Retardants)  it may lead to thyroid problems, liver problems, improper development of nervous system, etc.
  • Recycling of e-waste is very important as the elements are highly toxic and can cause serious health implications. Thus, recycling is an important step of e-waste management. Informal processing has adverse effect on environment and human health, hence awareness must be spread by the local authorities among the consumers.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...