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- 1. Multiple Choice
Which one of the following is a Dobereiner Triad?
Na,Ca,Al
Li,Na,Ca
Li,Na,K
F,Cl,Br
- 2. Fill in the Blank
In Newlands classification Periodicity of properties is lost after_______element.
- 3. Multiple Choice
In Mendeleev's Periodic Table how many periods and groups are present?
6 periods, 8 groups
6 groups, 8 periods
7 periods, 8 groups
7 groups, 8 periods
- 4. Multiple Choice
Newland classified ________ elements.
63
118
65
56
- 5. Fill in the Blank
According to Mendeleev's periodic law, Properties of elements are periodic functions of their increasing_________
- 6. Multiple Choice
Eka silicone is now called
Germanium
Aluminium
Gallium
Scandium
- 7. Fill in the Blank
In Mendeleev's periodic table, the position of ________ was not defined
- 8. Multiple Choice
Mendeleef classified _______elements
56
63
65
36
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