Question

1. The substances are not combined chemically in a..................................
2. Separating funnel method is based on the difference in....................................
of the two liquids.
3.................................................
is an example of a suitable adsorbent in chromatography.
4. Brass is a..............................
type of mixture.
5. Ca is the symbol of.............................

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Answer 1

Answer:

1.mixture

2.solubility

3.alumina

4.homogeneous

5. calcuim

Explanation:

Answer 2

Answer:

1) In a mixture the substances are not combined chemically.

2)A separating funnel is used for the separation of components of a mixture between two immiscible liquid phases. ... This separation is based on the differences in the densities of the liquids. The liquid having more density forms the lower layer and the liquid having less density forms the upper layer.

3)The Adsorbent

Silica gel (SiO2) and alumina (Al2O3) are two adsorbents commonly used by the organic chemist for column chromatography. ... For example, 70-230 silica gel is used for gravity columns and 230-400 mesh for flash columns. Alumina is used more frequently in column chromatography than it is in TLC.

4)Brass is an alloy of copper and zinc, in proportions which can be varied to achieve varying mechanical and electrical properties. It is a substitutional alloy: atoms of the two constituents may replace each other within the same crystal structure.