INTRODUCTION
CELL STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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detecting an odor by moving air toward you with your hand
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pulling your hair into a ponytail when working with fire
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testing a substance by tasting it
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watering a plant without wearing gloves
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Detailed explanation-1: -Laboratory chemicals should never be tasted. A pipet bulb, aspirator, or mechanical device must be used to pipet chemicals or to start a siphon. To avoid accidental ingestion of hazardous chemicals, pipetting should never be done by mouth.
Detailed explanation-2: -Extremely poor housekeeping, improper segregation or storage of hazardous chemicals. Poor chemical hygiene. Failure to use protective equipment or follow lab safety procedures while working with hazardous substances. Spills of chemical, biological, or radiological materials in a lab or in common areas.
Detailed explanation-3: -The unsafe condition is the wet spot, which should have been cleaned up or marked with a warning sign the moment the spill occurred. The unsafe act is rushing in a lab, where care and caution around equipment and others working with equipment should always be observed.
Detailed explanation-4: -The major chemical hazards in laboratories are the cleaning agents, anesthetic gases, disinfectants, drugs, and solvents. The persons working in laboratory are exposed to chemical hazards during their usage or due to improper storage.
Detailed explanation-5: -Keep your hands away from your face, eyes, mouth, and body while using chemicals. Food and drink, open or closed, should never be brought into the labora-tory or chemical storage area. Never use laboratory glassware for eating or drinking purposes. Do not apply cosmetics while in the laboratory or storage area.