| 1 |
Which one of the following elements exhibits s-inert pair effect. |
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| 2 |
Which is used in the leather industry |
- A. Borax
- B. Boric acid
- C. Boric oxide
- D. Tetra Boric acid
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| 3 |
A solution of borax in water is. |
- A. Acidic
- B. Alkaline
- C. Neutral
- D. None of these
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| 4 |
Which element burns in nitrogen atmosphere to form nitride. |
- A. Mg
- B. Al
- C. Both a and b
- D. None of these
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| 5 |
Lead monoxide is |
- A. Amphoteric
- B. Neutral
- C. Acidid
- D. Basic
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| 6 |
The composition of white lead is |
- A. PbCO3.Ph(OH)2
- B. PbCO3.2Pb(OH)2
- C. 2PbCO3.Pb(OH)2
- D. PbCO3
|
| 7 |
Which substances is called chrome yellow. |
- A. Pb3O4
- B. PbO
- C. 2PbCO3.Pb(OH)2
- D. PbCrO4
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| 8 |
Which are correct oxidation states for lead |
- A. +1, +2
- B. +3 , +5
- C. +2 ,+4
- D. +4 only
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| 9 |
Which of the following elements is not present abundantly in earth's crust |
- A. Silicon
- B. Aluminium
- C. Sodium
- D. Oxygen
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| 10 |
In which compound, the oxidation state of boron in not +3 |
- A. H2BO3
- B. Ca2B2O11
- C. Na2B4O7
- D. Mg3B2
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