Question # 1

Safety in the chemistry laboratory is

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A shared responsibility

The responsibility of the stueents only

The resposibiliyt of the professor only

The responsibiliyt of the lab incharge only

Toxic chemical is

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Benzene

Chlorine

Mercury ,benzene, chlorine

None of these

The label "Warning " on a chemial bottle signifies.

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That the chemicla can cause less serious injury

That user should open it only in the presence of a teacher

That user should be careful when using chemical

That the chemical can cause serious injury

Example of self-reactive chemical

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Potassium

Phenol

Picric acid

n-Hexane

Example of highly toxic chemical

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Ethanol

Potassium Cyanide

Potassium permaganate

Acetic acid

The label "Corrosive" on a cheiclabottle indicates.

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That the material is an oxidizing agent

That the contact dwestroys living tissue

That the material can degrade rapidly upon expsure

That the chemical can explode

What should you do in case of a fire drill in lab

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Close gas values and turn off al equipment

Run to safey shower

Climb into the fume cupboard

Close gas values and turn off all equipment

Accidents ofter result from

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Failure to follow instructions

Failure to use common sense

Making mistakes

All of the above

PPE means

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Personal Protective equipment

Personal Peoples equipment

Pipe Protective equipment

None of the these

When diluting an acid with water

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Always add acid to water

Do not stir the container

Do it quickly

Always add water to acid

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Chemistry 9th Class English Medium Unit 13 Online Test MCQs With Answers

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