| 1 |
What are the total numbers of periods in the modern periodic table |
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| 2 |
Ionization energy of calcium is. |
- A. Lower than that of barium
- B. Lower than that of magnesium
- C. Higher than that of beryllium
- D. Lower than that of strontium
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| 3 |
In a period, from left to right in the periodic table, the size of atom generally. |
- A. Increases
- B. decreases
- C. Remains constant
- D. First increase upto the middle of period and then decreases
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| 4 |
Which oxide is more basic in nature. |
- A. Beo
- B. MgO
- C. CaO
- D. BaO
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| 5 |
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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| 6 |
Which one of the following elements burns in air to form an oxide which, when shaken with water, give a solution with a pH greater than 7. |
- A. Carbon
- B. Magnesium
- C. sulphur
- D. Hydrogen
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| 7 |
What are the total numbers of periods in the modern periodic table. |
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| 8 |
Hydrogen resembles in properties with |
- A. IA, IV A and VII A elements
- B. III A, IV A and V A elements
- C. II A, IV A and VI A elements
- D. II A, III A and VII A elements
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| 9 |
Which of the following element has lowest ionization energy |
- A. Beryllium
- B. Boron
- C. Carbon
- D. Oxygen
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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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