Out of 100 cm^3 measuring cylinder, 100 cm^3 beaker, watch glass, 20 cm^3 pipette, test tube, 50 cm^3 burette, & 50 cm^3 gas syringe (can use...

any once, more than once or not at all) which would be to measure 80 cm^3 alcohol, 35 cm^3 of hydrogen, 21.1 cm^3 of vinegar, boiling 40 cm^3 of a non-flammable liquid, holding 2 gm of a solid for weighting, holding 5 cm^3 of water for heating.

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Equipments from the given list that will be best suited for different purposes is given below

Measuring 80 cm^3 alcohol: A 100 cm^3 measuring cylinder

Measuring 35 cm^3 of hydrogen: A 50 cm^3 gas syringe.

Measuring 21.1 cm^3 of vinegar: A burette may be used to measure out 21.1 cm^3 of vinegar from from a larger given quantity that does not exceed capacity of the burette. A 100 cm^3 cylinder may also be used but the accuracy of measurement will be lower.

Boiling 40 cm^3 of a non-flammable liquid: A 100 cm^3 beaker

Holding 2 gm of a solid for weighing: A watch glass

holding 5 cm^3 of water for heating: A test tube.

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