A kind of harmful chemical substances known as phthalates are sometimes in the news. Which of the following statements is/are correct regarding them? 1. They are extensively used in the manufacture of paints and varnishes. 2. They are used in the manufacture of toys. 3. They interfere with the development of reproductive system. 4. They are toxic to liver and thyroid glands. Select the correct answer using the code given below:
Phthalates are a group of chemicals used to make plastics more flexible and harder to break. They are commonly found in various consumer products. Let's evaluate the given statements about phthalates:
Phthalate Applications and Properties
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Statement 1: Use in Paints and Varnishes: Phthalates are indeed used in the manufacturing of paints, lacquers, and varnishes. They act as plasticizers, improving the flexibility, durability, and workability of these coatings.
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Statement 2: Use in Toys: Phthalates have been widely used to make polyvinyl chloride (PVC) soft and pliable, making them suitable for use in children's toys. However, due to health concerns, their use in toys is now restricted in many regions.
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Statement 3: Reproductive System Interference: Phthalates are recognized as endocrine disruptors. Exposure, particularly during critical developmental periods, can interfere with the normal development of the reproductive system.
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Statement 4: Organ Toxicity: Research indicates that certain phthalates can be toxic to specific organs. Studies have shown potential adverse effects on the liver and thyroid glands following exposure.
Conclusion on Phthalate Statements
Based on the known properties and effects of phthalates:
- Statement 1 is correct: They are used in paints and varnishes.
- Statement 2 is correct: They are used in toy manufacturing.
- Statement 3 is correct: They interfere with reproductive system development.
- Statement 4 is correct: They can be toxic to the liver and thyroid glands.
Therefore, all four statements regarding phthalates are correct.
Important Questions from Chemical Poisoning
Consider the following statements regarding organophosphate-induced delayed polyneuropathy (OPIDN) :
1. It is a rare complication and occurs 2 - 3 weeks after acute exposure.
2. It is a feature of poisoning with certain organophosphorus compounds such as triorthocresyl phosphate.
3. Inhibition of acetylcholinesterase causes motor polyneuropathy with no evidence of sensory loss.
4. There is no specific therapy although regular physiotherapy may limit deformity caused by muscle wasting.
Which of the statements given above are correct?
- The toxic effects of aluminium phosphide is due to the release of:
- Use of calcium carbide for the artificial ripening of fruits is banned but it is often reported to be illegally used. What is/are the likely health hazards of exposure to this chemical?
1. Permanent damage to the eyes
2. Pulmonary edema
3. Irritation of mouth, throat and nose
Select the correct answer using the codes given below: - Which of the following statements is correct regarding Malachite that is used as food adulterant?
Which of the following parts of the human body can be used as a sample/samples for the presence of mercury?
1. Blood
2. Hair
3. Nail
Select the correct answer using the code given below:
