CMI Best Practices in Cleaning Procedures 3

Question 1

What is the primary purpose of burnishing a VCT (vinyl composition tile) floor after stripping and recoating?

Accepted Answer

To create a high-gloss wet-look shine by friction-heating the finish

Answer

Burnishing uses high-speed friction to heat and harden the top finish coat, producing a high-gloss appearance.

Question 2

When cleaning glass windows and mirrors, streaks are most commonly caused by:

Accepted Answer

Leaving cleaning solution residue due to insufficient wiping

Answer

Streaks form when cleaning solution dries on the glass before being fully removed, leaving residue behind.

Question 3

A custodian needs to clean an elevator cab floor made of marble. Which product should be AVOIDED?

Accepted Answer

Acidic tile cleaner or vinegar-based solution

Answer

Acids etch and permanently damage marble and other natural stone surfaces, so only pH-neutral products should be used.

Question 4

In high-traffic areas, how often should spot-mopping of spills be performed compared to scheduled cleaning?

Accepted Answer

Immediately as spills occur to prevent slip hazards

Answer

Immediate spot-mopping of spills prevents slip-and-fall accidents and complies with safety standards for hazard abatement.

Question 5

What does MSDS/SDS stand for and why is it critical to custodial work?

Accepted Answer

Material Safety Data Sheet; provides chemical hazard and handling information

Answer

An SDS (Safety Data Sheet) contains essential information on chemical hazards, safe handling, PPE requirements, and emergency procedures.

(CMI) Certified Custodial Technician Practice Test