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Class 11 Chemistry
S-Block Elements Chapter 10
Quiz 1
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Alkali metals are powerful reducing agent because:
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These are monovalent
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These are metals
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Their ionization potentials are low
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Their ionic radii are large
Sodium has, as compared to potassium:
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Larger atomic radius
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More metallic character
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Lower melting point
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More ionization potential
Sodium reacts with water more vigorously than lithium because:
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It has a higher atomic weight
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It is more electronegative
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It is more electropositive
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It is a metal
An element having configuration 1s22s22p63s23p64s1 will form:
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Basic oxide
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Amphoteric oxide
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Neutral oxide
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Acidic oxide
As compared to Potassium, Sodium has:
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Larger atomic radius
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Lower melting point
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More ionization potential
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Less ionization potential
A substance X is a compound of an element of group 1, and gives violet colour in flame test. X is:
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KCl
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CsCl
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NaCl
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LiCl
Which of the following is kept under kerosene:
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Rubidium
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Sodium
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Cesium
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Lithium
Alkali metals are characterized by:
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High ionization potentials
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High melting points
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Low oxidation potential
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Good conductor of heat and electricity
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