CIDQ IDPX Exam - Topic 4 Question 12 Discussion

Actual exam question for CIDQ's IDPX exam

Question #: 12
Topic #: 4

[All IDPX Questions]

Formaldehyde, PVC, and phthalates are examples of chemicals included in

AThe Red List

BClass C finishes

CHazardous building types

DCAL 133 compliant products

Show Suggested Answer

Suggested Answer: A

by Vince at Oct 29, 2025, 03:13 AM

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Latrice

9 hours ago

Wait, are they really that dangerous?

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Desiree

6 days ago

Totally agree, they should be banned in construction.

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Maile

11 days ago

These are all known toxic substances!

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Dierdre

16 days ago

Wait, is this a trick question? I'm going with C. Hazardous building types. Sounds legit.

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Moon

21 days ago

Hazardous building types? Really? I think I'll stick with B. Class C finishes.

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Cecil

26 days ago

D. CAL 133 compliant products. Easy peasy.

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Abraham

1 month ago

Hmm, I'll go with A. The Red List. Sounds like the right answer.

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Kimberely

1 month ago

Definitely B. Class C finishes. Formaldehyde and phthalates are all over those.

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Renato

1 month ago

I'm pretty sure it's D. CAL 133 compliant products.

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Lenita

2 months ago

I recall that the Red List is specifically for materials to avoid, so I’m leaning towards A, but I could be mixing it up with Class C finishes.

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Lezlie

2 months ago

I’m a bit confused. I thought CAL 133 was more about fire safety standards, not necessarily about chemicals like formaldehyde.

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Rolland

2 months ago

I practiced a question about hazardous materials, and I feel like PVC and phthalates were mentioned there. Maybe it's related to hazardous building types?

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Raylene

2 months ago

I think it's A) The Red List. Those chemicals are definitely hazardous.

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Georgiana

3 months ago

Yup, definitely on the Red List!

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Geoffrey

3 months ago

I think I remember something about the Red List including harmful chemicals, but I'm not entirely sure if all of these are on it.

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Deane

3 months ago

This seems straightforward. Formaldehyde, PVC, and phthalates are all found in hazardous building products, so the answer is clearly D. CAL 133 compliant products.

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Jaleesa

4 months ago

I'm a little confused by this question. I know those chemicals are bad, but I'm not sure how they relate to building materials. I'll have to review my notes and see if I can figure this out.

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Malcom

4 months ago

Okay, I've got this. Formaldehyde, PVC, and phthalates are all chemicals found in hazardous building materials, so the answer has to be C. Hazardous building types. Easy peasy!

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France

4 months ago

Hmm, this is a tricky one. I know formaldehyde and phthalates are considered hazardous, but I'm not sure about the other options. I'll have to think this through carefully.

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Glory

4 months ago

I think this is asking about hazardous building materials, so I'll focus on options C and D. Hazardous building types sounds like the right category, but I'm not sure if that's the full answer.

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Charlette

2 months ago

Hazardous building types definitely fits the chemicals listed.

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Inocencia

2 months ago

I agree, C sounds right.

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Ivette

3 months ago

But what about D? CAL 133 compliant could be relevant too.

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