| 1 |
In which compound, oxidation state of sulphur is +6 |
- A. H2S
- B. H2SO4
- C. H2SO3
- D. SO3
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| 2 |
Which is the longest periodic table |
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| 3 |
In modern periodic table VI period contains elements |
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| 4 |
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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| 5 |
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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| 6 |
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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| 7 |
In which block of periodic table non metals are present. |
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| 8 |
Which has greater hydration energy. |
- A. Li+
- B. Na+
- C. K+
- D. Mg+2
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| 9 |
Majority of the elements of the periodic table are. |
- A. Semi metals
- B. Non metals
- C. Metals
- D. Noble metals
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| 10 |
The concept of atomic number was introduced by |
- A. Alrazi
- B. Mendeleeve
- C. Moseley
- D. Dobereiner
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