Which of the following statements is correct?
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1,623 questionsDilute trioxonitrate (V) acid does not produce hydrogen when it reacts with metals because
Which of the following properties does not give evidence of the kinetic theory of matter?
Which of the elements in the table below would react more readily with chlorine?
|
Element |
Ionization energy (KJ \(mol^{-1} \times 10^{-3}\)) |
| W | 12.0 |
| X | 21.0 |
| Y | 106.0 |
| Z | 200.0 |
The formation of a bond between hydrogen and a highly electronegative atom results in
Alkenes can be manufactured by
The following steps are scientific methods except
Which of the following reactions represents the hydrolysis of an alkanoate?
The following statements are correct except
The vapour density of an organic compound with the molecular formula \(C_2H_4O_2\), is
[H=1.0, C=12.0, O= 16.0]
Which of the following sketches is a graphical representation of Boyle's law?
Which of the following scientists formulated the law of conservation of mass?
The first definition of an element was made by
Charcoal is used in the decolourization of sugar because of its
If the molar mass of X(HCO3)\(_{2}\) is 162 g mol\(^{-1}\), determine the relative atomic mass of X.
[H = 1.0, C = 12.0, 0 = 16.0]
Which of the following processes occur during fractional distillation of petroleum?
Which of the following oxides is amphoteric?
Consider the following table
| Substitute | Meltig point / ºC | Boiling point / ºC |
| P | - 78 | -25 |
| Q | - 8 | 40 |
| R | - 6 | 150 |
| S | 44 | 280 |
Which of the substances is a liquid at room temperature and rapidly evaporates on exposure to air?
Electropositivity of elements across the periodic table normally
The atom with the electron configuration
1s\(^{2}\)2s\(^{2}\)2p63s\(^{2}\)3p\(^{6}\)3d\(^{10}\)4s\(^{2}\)4p\(^{4}\) is in