| 1 |
Fluorine is in group VII A of periodic table. Its chemistry will most closely resembles that of. |
- A. Argon
- B. Boron
- C. Iodine
- D. Sulphur
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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 |
In which one of the following sets do all three particles have same number of total electrone |
- A. F- ,Cl-,Br-
- B. Li+ , Na+ , K+
- C. N<sup>--3,</sup> O-2, F-,
- D. Na+, Mg+2, K+
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| 4 |
In which block of periodic table non metals are present. |
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| 5 |
The basis of modern periodic table is |
- A. Electron affinity
- B. Atomic mass
- C. Ionization Potential
- D. Atomic number
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| 6 |
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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| 7 |
Which statement is incorrect. |
- A. All the metals are good conductors of electricity
- B. All the metals are good conductor of heat
- C. All the metal form positive ions
- D. All the metal form acidic oxides
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| 8 |
Which one of the following oxides is amphoteric in nature. |
- A. MgO
- B. Na2O
- C. SO2
- D. ZnO
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| 9 |
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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| 10 |
Which one of the following sets has coinage metaals is it. |
- A. Cu, Hg, Au
- B. Cu, Ag, Au
- C. Ag, Au, Hg
- D. Cu, Fe, Au
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