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प्रश्न
Choose the most appropriate answer
A pair of metalloids are
विकल्प
Na and Mg
B and Si
C and P
He and A
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उत्तर
B and Si
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संबंधित प्रश्न
Differentiate between the following
Supernatant liquid and Fill rate
Name the different types of chromatographic techniques.
Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method.
Water and alcohol
State any one method – to separate the following mixtures – A gas-gas mixture containing – two gases with different densities.
Explain with diagram the process used to – separate the following substance from the given mixtures - Ammonium chloride from a mixture of – ammonium chloride & potassium chloride.
Explain with diagram the process used to – separate the following substance from the given mixtures - Sulphur from a mixture of – sulphur & copper.
Give a reason for the following statement :
Zinc is considered an element, while zinc sulphide is considered a compound.
Very Short Answer Type Question:
What types of material can we separate by using handpicking?
How can husk or fine dust particles be separated from rice before cooking?
Why do we separate mixtures?
