Question

answer these questions for my brother please
1.you are given a powdered mixture of sulphur,pottassium-chloride and carbon.Explain how you would separate each substance in powdered or solid form.
2.name the process used to separate:
a)common salt in Salt water mixture
b)sulphur from a mixture of sulphur-carbon.
c)iodine in a iodine-salt mixture.
d)coloured dye in black ink.
e)alcohol in a mixture of alcohol &water.
f)oil from oil-water mixture.
g)iodine from a mixture of iodine & ammonium-chloride.
h)petrol from crude oil.
i)benzine from a mixture of tolene.
3.Identify as homogeneous or heterogeneous:
a)mixed vegetable recipe.
b)german silver.
c)soil.
d)liquid air.
e)milk.
f)smog.
g)blood.
h)petroleum.
4.state the 2 pases involved in the method of chromatography with 1 example of each
5.state 4 important uses of paper chromatography.
6.with 1 example each,explain the 3 causes for separating the constituent s of a mixture.
7.Give 1 example of each:
a)solid-solid mixture.
b)solid-liquid mixture.
c)liquid-liquid immiscible mixture.
d)solid-gas mixture.
e)gas-liquid mixture.
f)gas-gas mixture
8.Why is filtration preferred to sedimentation/decantation process.
.

•I know this is alot that's why I'm giving 20 points and brainliest to whoever answers fastest n most correct.
•do this for a 7th standard level
•i would do this myself but I'm too lazy​

Answer 1

Answer:

Explanation: 1 Use tweezers to separate one type of solid from another. Use a sieve with holes of the appropriate size. The smaller particles will pass through, and the larger particles remain in the sieve. Wind throws lighter particles further than heavier particles

2 (a) Distillation and evaporation

(b)  filtration

(c)  Sublimation

(d)  chromatography

(e) fractional distillation

(f) distillation

(g) sublimation

(h) refining

(i)  distillation

3: (a) homogeneous

(b) hetrogenous

(c)hrtrogenous

(d)homogenous

(e) hetrogenous

(f) homogenous

(g) homogenous

(h) homogenous