Chemistry
Fill in the blanks:
(a) Brass is a solid-solid …………… mixture.
(b) The method used to separate sawdust and sand is …………… .
(c) Kerosene oil and water are …………… liquids.
(d) Atomicity is the number of atoms in a molecule of …………… .
Elements, Compounds & Mixtures
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Answer
(a) Homogeneous
(b) Gravity separation method
(c) heterogeneous
(d) an element
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Related Questions
Assertion (A): Metalloids are the elements showing some properties of metals and some properties of non-metals.
Reason (R): Metalloids are hard solids.
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Reason (R): Components of ink are separated by chromatography.
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(a) The elements present in a compound can be obtained by simple physical methods.
(b) The properties of components are retained in a mixture.
(c) Common salt is separated from sea water by evaporation.
(d) A mixture has a definite chemical formula.
Match the following columns.
Column A Column B (a) Solid + Liquid mixture (i) Krypton (b) Filtration (ii) Pure substance (c) Chromatography (iii) Salt and water (d) Compounds (iv) Residue (e) Inert gas (v) Components of ink