Physical Chemistry Answers

The S.I unit of temperature is?
A)kelvin
B)temp
C)celcius
D)census

In fractional distillation,a mixture of liquid is separated based on their?
A)boiling point
B)solubility
C)density
D)chemical composition

In filtration,the term filtrate refers to?
A)the solid that remains on the filter paper
B)the liquid that drains through the filter paper
C)the type of filter paper used
D)the mixture before separation

Convert 10 kg to mg?
A)10,000,000mg
B)10,000mg
C)1,000mg
D)1,000,000mg

What is the appropriate S.I unit for distance?
A)centimetres
B)inches
C)metres
D)kilometres

Distillation can be use to separate?
A)a soluble solid from a solution
B)a liquid from a solution
C)a Solid from a solid
D)an insoluble solid from a solution

Fractional distillation cannot be used to?
A)separate the components of liquid air
B)refine crude oil
C)test the purity of a substance
D)separate methanol and water

If 30g of a substance occupies a volume of 25 cm3,calculate it's density on S.I unit?
A)1.2 g/cm3
B)1.2 kg/m3
C)0.0012 g/cm3
D)0.0012 kg/m3

Which of the following groups of elements in periodic table exhibits semiconductor behaviour?
A)group IV
B)group III
C)group II
D)group I

In order to dissolve the greatest amount of sugar in a cup of water,you should?
A)use sugar crushed into small pieces, and heat the water
B)use sugar crushed into small pieces,and cool the water
C)use sugar in large pieces,and heat the water
D)use sugar in large pieces,and cool the water