| 1 |
Which one is least reactive non-metal? |
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| 2 |
Sodium - potassium alloy is used in nuclear reactor as a:<br> |
- A. catalyst <br>
- B. coolant <br>
- C. reactant <br>
- D. absorber<br>
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| 3 |
Which one of the following is brittle?<br> |
- A. Sodium<br>
- B. Aluminum <br>
- C. Selenium<br>
- D. Magnesium <br>
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| 4 |
Non-metals do not reaction with |
- A. Strong bases
- B. Concentrated acids
- C. Dilute acids
- D. Salts
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| 5 |
Sodium is exterminate reactive metal, but it does not react with:<br> |
- A. Hydrogen<br>
- B. Nitrogen<br>
- C. Sulphur <br>
- D. Phosphorus<br>
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| 6 |
Which one is least oxidizing agent? |
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| 7 |
Metal oxides are |
- A. Amphoteric
- B. Basic
- C. Acidic
- D. Neutral
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| 8 |
Electropositive character depends upon: |
- A. Atomic size
- B. Nuclear charge
- C. Ionization energy
- D. Electron affinity
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| 9 |
All non-metals are non-conductor of heat and electricity except it |
- A. Phosphorous
- B. Sulphur
- C. Graphite
- D. Iodine
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| 10 |
The core of the earth is ____________ than crust. |
- A. LIghter
- B. Heavier
- C. Both
- D. Nil
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