1 |
The first ionization energy of Na, Mg, Al and Si are in theorder of. |
- A. Na < Mg < Al < Si
- B. Na > Mg> Al> Si
- C. Na > Mg< Al< Si
- D. Na< Mg> Al< Si
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2 |
Variable valency is generally exhibited by |
- A. Transition elements
- B. Alkali metals
- C. s-block elements
- D. Gaseous elements
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3 |
What are the total numbers of periods in the modern periodic table |
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4 |
As you proceed across a period in the periodic table the first ionization energy |
- A. Decrease
- B. Increase
- C. Remains constant
- D. First increase up the middle of period and then decreases
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5 |
Elements of Groups IIA are called |
- A. Alkali metals
- B. Alkaline earth metals
- C. Coinage metals
- D. Halogens
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6 |
The oxides of metal sare generally |
- A. Acidic
- B. Basic
- C. Neutral
- D. Amphoteric
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7 |
In which compound, oxidation state of sulphur is +6 |
- A. H2S
- B. H2SO4
- C. H2SO3
- D. SO3
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8 |
Which of the following element has lowest ionization energy |
- A. Beryllium
- B. Boron
- C. Carbon
- D. Oxygen
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9 |
In which group, melting point and boiling point increase downward in a group |
- A. IA
- B. II A
- C. VII A
- D. Both a and b
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10 |
Transition elements are those |
- A. Which becomes before uranium
- B. Which becomes after uranium
- C. Which are prepared artificially
- D. Which are in between s-block and p - block elements
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