SAT Chemistry Practice Test 73
Reactivity of Elements Quiz Questions and Answers PDF Download - 73
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Reactivity of Elements Questions and Answers PDF Download: MCQ 73
Alkali metals are
- S-block element
- Soluble in water
- Group - IA
- All of above
All of these are metals except
- Na
- Pb
- S
- Zn
By the mid of 1980s depletion of total overhead ozone in Antarctic region is
- 20%
- 30%
- 40%
- 50%
Metallic character decreases in the periods due to
- Increase in atomic radii
- Decrease in atomic radii
- Small size
- High charge density
The percentage of Nitrogen in the atmosphere is
- 70%
- 80%
- 90%
- 99%
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