Tag: man made materials

Quizzes (8) Questions (131)

Questions Related to man made materials

Multiple choice chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

The substance which undergoes decomposition by the microbial action is called a:

  1. biodegradable substance

  2. non-biodegradable substance

  3. recyclable substance

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodegradable substances are those materials or products that are able to naturally break down or decompose without causing any harm to the environment. Biodegradable substances are generally things that are organic in nature. This means they are substances that are made from things that were living at some point. Examples of biodegradable substances include paper which is made from trees, meat products which come from animals and leather products.

Multiple choice chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

Environmental pollution by plastics can be minimized by practising the 4R principle of:

  1. REDUCE, REUSE, RECYCLE

  2. REDUCE, REUSE, RECYCLE and RECOVER

  3. REDUCE, REUSE, REWORK and RECYCLE

  4. REDUCE, REGENERATE, REWORK and RECYCLE
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The 4R principle is Reduce, Reuse, Recycle and Recover. This principle is environment friendly and would help reduce environmental pollution to an extent.


The principle directs people to


•reduce the usage of resources. Use them only if necessary.


•reuse the resources (or materials) if possible. For example, reusing cloth bags for shopping.


•recycle materials if they are no longer usable.


•recover materials; converting waste into usable resources.

Hence, the correct option is $\text{B}$
Multiple choice chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

Plastic __________ the percolation of water into the soil and prevents replenishment of ground water.

  1. increases

  2. reduces

  3. doesn't affect

  4. varies
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Groundwater moves through soil and rocks, picking up pollution along the way. Plastic trash can affect groundwater quality, especially if you dispose of it improperly. It reduces the percolation of water as it comes in the way as water moves through soil.

Multiple choice chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

Which of the following best describes biodegradation?

  1. A minor change in an organic molecule

  2. Fragmentation of a complex organic molecule

  3. Complete transformation of the organic molecule to mineral forms

  4. All of the above

  5. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A biodegradable substance is the one which gets decomposed by the natural processes. It can be also described by a the minor change in the organic molecule, fragmentation or we can say breaking of the complex molecule or the complete transformation of the organic molecule to the mineral form.

Multiple choice chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

Which of the followings prove that plastics do not make food and medicine toxic?

  1. Milk pouches

  2. Edible oil container

  3. Ice-cream packs

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Plastics are not toxic when come in contact with food and medicines if they are synthesized according to permissible standards. Plastics are used world-over because they are safe for packaging of foods, medicines and child care products. A few examples are - milk pouches, edible oil container, ice-cream packs, blister packs for tablets and capsules. I.V. fluids and blood is collected and stored in plastic bags.

Multiple choice chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

Plastic is bad for environment because :

  1. they are non-biodegradable

  2. they harm aquatic life

  3. they are toxin carrier

  4. all of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Plastic poses several environmental risks, including leaching chemicals and toxins into surrounding ecosystems, threatening the health of local animal populations and releasing greenhouse gases into the air. plastic are non-biodegradable. The negative effects of plastic vary depending on the type of plastic in the environment, quantity and length of exposure time. Plastics contain compounds, such as PVC and BPA, elements deemed a health risk to humans and animals while the leaching of these compounds into air and waterways poses a health and safety risk for nearby organisms.

Multiple choice chemistry man made materials plastic and environment pollution due to plastics environmental impact: plastics

Incineration of plastics causes:

  1. nitrogen emission

  2. sulfur emission

  3. carbon emission

  4. all of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Incineration is a waste treatment process that involves the combustion of organic substances contained in waste materials. The $CO _2$ is produced when plastics are incinerated. The plastics are petroleum oil and gas derived products  and are generally treated as non-renewable.