Match the following:
| A. Alkynes | (i) No. of molecules in 22.4 dm3 of carbon dioxide at s.t.p |
| B. Alkane | (ii) An element with electronic configuration 2,8,8,3 |
| C. Iron | (iii) CnH2n+2 |
| D. Iron | (iv) CnH2n-2 |
| E. Metal | (v) Metal that forms two types of ion. |
Fill in the blank with the choice given within bracket:
Cold dilute nitric acid reacts with copper to form ................(hydrogen, nitrogen dioxide, nitric oxide)
Fill in the blank with the choice given within bracket:
Ammonia gas is collected by.............................(an upward displacement of air, a downward displacement of water, a downward displacement of air).
Give one word or phrase for the following :
The amount of energy released when an atom in the gaseous state accepts an electron to form an anion.
Give one word or phase for the following:
The ration of the mass of a certain volume of gas to the mass of an equal volume of hydrogen under the same condition of temperature and pressure.
Fill in the blanks with the choices given with bracket:
The compounds formed when ethanol reacts with sodium is .................(sodium ethanoate ,sodium ethoxide, sodium propanoate.)
Fill in the blanks from the choice given within bracket:
The basicity of Acetic Acid is ……… (3,1,4).
Fill in the blank with the choice given within bracket:
Quicklime is not used to dry HCl gas because .................... (CaO is alkaline,CaO is acidic,CaO in neutral).
