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The energy required to remove an electron from a neutral isolated gaseous atom and convert it into a positively charged gaseous ion is called ____________. (electron affinity, ionization potential, electronegativity)
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The compound that does not have a lone pair of electrons is __________.(water, ammonia, carbon tetrachloride)
tetrachloride
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When a metallic oxide is dissolved in water, the solution formed has a high concentration of ____________ ions (H+, H3O+, OH-)
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Potassium sulphite on reacting with hydrochloric acid releases _______gas. Cl2, SO2, H2S)
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The compound formed when ethene reacts with Hydrogen is ________.(CH4, C2H6, C3H8)
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A chloride which forms a precipitate that is soluble in excess of
ammonium hydroxide is:
Calcium chloride
Ferrous chloride
Ferric chloride
Ferric chloride
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If the molecular formula of an organic compound is C10H18 it is:
alkene
alkane
alkyne
alkyne
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Which of the following is a common characteristic of a covalent compound?
high melting point
consists of molecules
always soluble in water
always soluble in water
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To increase the pH value of a neutral solution, we should add
an acid
an acid salt
an alkali
an alkali
Anhydrous iron(III) chloride is prepared by
direct combination
simple displacement
decomposition
decomposition