Chemistry-
General
Easy
Question
Which one of the following elements reduces NaOH to Na
- Si
- Pb
- C
- Sn
The correct answer is: C
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Which of the following elements reacts with steam
Which of the following elements reacts with steam
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is the basic structural unit in the following silicates
is the basic structural unit in the following silicates
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Silicones contain the following characteristics
Silicones contain the following characteristics
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In H2SiF6 the covalency of silicon is
In H2SiF6 the covalency of silicon is
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Carbogen is
Carbogen is
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Carbondioxide dissolves under pressure in water to give
Carbondioxide dissolves under pressure in water to give
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During day time plants absorb
During day time plants absorb
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CO can be used as a fuel but not CO2 because
CO can be used as a fuel but not CO2 because
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An example of major air pollutant is
An example of major air pollutant is
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The hybridisation of carbon in carbon monoxide is
The hybridisation of carbon in carbon monoxide is
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Which property is common in diamond and graphite
Which property is common in diamond and graphite
Chemistry-General
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Graphite is a good conductor of electricity due to
Graphite is a good conductor of electricity due to
Chemistry-General
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Graphite is used as lubricant due to
Graphite is used as lubricant due to
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The alkaline earth metal which does not directly combine with hydrogen is:
The alkaline earth metal which does not directly combine with hydrogen is:
Chemistry-General
Chemistry-
Both alkaline earth metals and alkali metals are s-block elements. They resemble with each other in many respects but still there are certain dissimilarities in their properties on account of different number of electrons in the valence shell, smaller atomic radii, higher ionisation potential, higher electronegativity, etc.
Like lithium, beryllium also differs from rest of the alkaline earth metals on account of its small atomic size and high electronegativity. Be2+ ion is very small and exerts a high polarising effect on any anion associated with it.
Which is least thermally stable?
Both alkaline earth metals and alkali metals are s-block elements. They resemble with each other in many respects but still there are certain dissimilarities in their properties on account of different number of electrons in the valence shell, smaller atomic radii, higher ionisation potential, higher electronegativity, etc.
Like lithium, beryllium also differs from rest of the alkaline earth metals on account of its small atomic size and high electronegativity. Be2+ ion is very small and exerts a high polarising effect on any anion associated with it.
Which is least thermally stable?
Chemistry-General
