| 1 |
Ozone is?
|
Paramagnetic <br>
Diamagnetic <br>
Ferromagnetic <br>
Non - magnetic<br>
|
| 2 |
Paraffin wax used for making candles is obtained form
|
Coal <br>
Petroleum<br>
Seaweeds <br>
Marsh gas <br>
|
| 3 |
Passing a battery current through a solution of brine will produce
|
Sodium hydroxide and chlorine <br>
Chlorine and sodium<br>
Sodium hydroxide and oxygen <br>
Chlorine and hydrogen<br>
|
| 4 |
Permanent hardness of water is due of the presence of
|
Calcium carbonate <br>
Magnesium bicarbonate<br>
Calcium sulphate<br>
Sodium bicarbonate <br>
|
| 5 |
Petroleum is found in
|
lgneous rock <br>
Sedimentary rocks<br>
Metamorphic rocks<br>
Marshy land<br>
|
| 6 |
Phenol is a raw material used in the manufacture of
|
Perspex <br>
Dacron<br>
Terylene <br>
Bakelite<br>
|
| 7 |
Phosgene can be used as
|
an insecticide <br>
a herbicide <br>
a warfare gas <br>
a defoliant<br>
|
| 8 |
Rare Gases are generally chemically inert because they
|
are monotonic <br>
have low ionization energy <br>
have stable electronic configuration <br>
have a high electron affinity <br>
|
| 9 |
What is the silk?
|
Fat <br>
Carbohydrate <br>
Hydrocarbon<br>
Protein<br>
|
| 10 |
Sodium Chloride, Potassium chloride and magnesium oxide are examples of molecules with
|
Covalent Bonding <br>
Ionic Bonding <br>
Metallic Bonding <br>
Hydrogen Bonding<br>
|
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