Which units have you used in the laboratory for measuring (i)length,(ii) mass,(iii) time,(iv) temperature?

Which units have you used in the laboratory for measuring time?

Which units have you used in the laboratory for measuring mass ?

Which units have you used in the laboratory for measuring temperature?

Which system of units have you used?

Which chemicals and apparatus will you use in the laboratory for making soap?

Which is the unit used to measure large voltages?

Which are mixture and pure substances from the followings? (i) sea water (ii)gasoline (iii) skin (iv) a rusty nail (v) a page of the textbook. (vi) diamond

Answer in your own words : Will it be possible to use one and the same unit to measure physical quantities such as mass , weight , distance , velocity , temperature ?