| 1 |
Hydrogen and nitogen are used for teh manufacturing of. |
Benaspati ghee
Oxygen cylinder
Hydrogen flame
Urea
|
| 2 |
hardest matter on the Earth is. |
Lead
Diamond
Brick
Urea
|
| 3 |
Allowy is ......... forms of metals mixed together. |
Solid
Gas
Normal
Molten
|
| 4 |
Metals have .......... melting and boiling point. |
Low
High
Very low
Normal
|
| 5 |
Metals are found in.................. state at room temperatures. |
Gas
Solid
Liquid
None of these
|
| 6 |
Bromine is |
Solid
Gas
Liquid
All of these
|
| 7 |
Some metals can be pulled into wire This is because metals are. |
Ductile
Solid
Hard
Brilliant
|
| 8 |
Mass number of oxygen is |
6
16
26
36
|
| 9 |
Na is symbol of. |
Neon
Nitrogen
Sodium
None of these
|
| 10 |
Elements of group 17 are called. |
Carbon family
Noble gases
Nitrogen family
Halogen family
|
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