1.2.2 Disposal of Waste (T/F)

Acids and alkalis with a pH between 4 and 10 can be safely disposed of in the sink.

Liquids or solutions with low concentration can be disposed of in the sink.

Toxic substances can be safely disposed of in the sink if they are in small amounts.

Heavy metals such as mercury, lead, and cadmium must not be disposed of in the sink.

Non-corrosive materials like glucose solutions can be disposed of in the sink.

Volatile materials like formaldehyde and petrol should be disposed of down the sink.

Biological waste includes blood, tissues, organs, and animal carcasses.

Sharp objects like needles and scalpel blades are classified as Category C biological waste.

Animal carcasses fall under Category C biological waste.

Blood and serum are classified as Category B biological waste.

Sharp waste should be placed in biohazard bags before disposal.

Non-sharp and contaminated waste should be placed into biohazard bags and autoclaved.

Chemical spills should be left to evaporate naturally to avoid contamination.

In case of a chemical spill, the first step is to notify the teacher or lab assistant.

Sand is commonly used to absorb chemical spills.

For mercury spills, it is recommended to sprinkle sulphur powder to neutralize the mercury.

Mercury spills can be cleaned up with paper towels and disposed of in regular trash bins.

Proper waste disposal maintains lab safety and prevents environmental contamination.

All laboratory waste can be disposed of using the same method.

Consulting Safety Data Sheets (SDS) is necessary for determining proper chemical disposal methods.