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18 Questions

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SI Units and Prefixes

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Questions and Answers

What is the SI unit of mass?

Kilogram (correct)

Pound

Gram

Milligram

Which instrument is used to measure the volume of a liquid accurately in a laboratory?

Burette

Pipette

Volumetric flask

All of the above (correct)

What is the unit of volume?

Cubic centimeter

(Length)^3 (correct)

Gram per milliliter

Cubic meter

Which temperature scale has a range of 0° to 100°?

Celsius scale Signup and view all the answers

What is the smallest unit of mass commonly used in a laboratory?

Gram Signup and view all the answers

What is the purpose of a volumetric flask?

To prepare a known volume of a solution Signup and view all the answers

What is the unit of luminous efficacy of monochromatic radiation of frequency 540×10^12 Hz?

lm·W–1 Signup and view all the answers

What is the prefix for 10^15 in the SI System?

peta Signup and view all the answers

What is the difference between mass and weight?

Mass is the amount of matter present in it, while weight is the force exerted by gravity on an object. Signup and view all the answers

What is the SI unit of volume?

m3 Signup and view all the answers

What is the relationship between litre (L) and cubic centimetre (cm3)?

1 L = 1000 cm3 Signup and view all the answers

What is the advantage of using SI units?

They are easy to convert between units. Signup and view all the answers

What is the symbol for the SI unit of length?

m Signup and view all the answers

What is the fixed numerical value of the planck constant h in the unit Js?

6.62607015×10–34 Signup and view all the answers

What is the unit of thermodynamic temperature?

Kelvin Signup and view all the answers

What is the SI unit of electric current?

ampere Signup and view all the answers

What is the unit of amount of substance?

mole Signup and view all the answers

What is the unit of luminous intensity?

candela Signup and view all the answers