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The periodic property that is used to determine whether a covalent molecule is polar or not is
The gas that is less dense than air is
The primary component of natural gas
Going down group II in the periodic table normally
A consequence of global warming is
How many unpaired electrons are present in \(_{26}Fe^{3+}\)?
Which of the following laws or theory cannot be explained by the application of the kinetic theory of gases?
Carbon is deposited in the exhaust pipes of cars because of
What takes place at the cathode during electrolysis?
Copper (II) ions are able to participate in co-ordinate covalent bonding because they
Arrange the following compounds in decreasing order of their boiling points: \(NH_3\), HF, \(SiH_4\), \(CH_4\)
Consider the following reaction equation:
\(2SO_3(g) → 2SO_2(g) + O_2\)(g)
∆H = +198 kJ/mol
Which of the following statements about the reaction is correct?
The separation technique that is suitable for separating iodine from tetrachloromethane is
The salt solution formed firm a reaction between ethanoic acid and sodium hydroxide solution would be
Which of the following equations does not illustrate correctly one of the reactions of chlorine?
The pair of compounds that belongs to the same homologous series is
Which of the following equimolar solutions has the highest conductivity?
How many moles are there in 3.0 g of \(O_2\)? [O = 16.0]
Species that occur in a reaction pathway but not in the overall reaction are known as
A mixture containing two salts of different solubility can be separated by