| 1 |
Which one of the following elements burns in air to form an oxide which, when shaken with water, give sa solution with a pH greater than 7. |
- A. Carbon
- B. Magnesium
- C. sulphur
- D. Hydrogen
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| 2 |
Electron affinity is measure of energy |
- A. Required to remover the electron
- B. Released by adding an electron
- C. Required to excite an electron
- D. Released by removing an electron
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| 3 |
In which block of periodic table non metals are present. |
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| 4 |
Which one of the following oxides is amphoteric in nature. |
- A. MgO
- B. Na2O
- C. SO2
- D. ZnO
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| 5 |
Which oxide is more basic in nature. |
- A. Beo
- B. MgO
- C. CaO
- D. BaO
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| 6 |
Correct order according to atomic size in the following is |
- A. Na > K
- B. Be > Mg
- C. O > N
- D. Cl > F
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| 7 |
Element of which group reacts with hydrogen and form ionic hydrides. |
- A. II A
- B. IV A
- C. V A
- D. VI A
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| 8 |
Which of the following are alkaline earth metals? |
- A. Be, Mg, Ca
- B. Li, Na, K
- C. Fe, CO, Ni
- D. B, Al, Ga
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| 9 |
Which one is an incomplete period |
- A. 4th
- B. 5th
- C. 6th
- D. 7th
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| 10 |
Mark the correct statement. |
- A. Na+ is smaller than Na atom
- B. Na+ is large than Na atom
- C. Cl- is smaller than Cl atom
- D. cl- and Cl are equal in size
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