Entry Test MCQ :: s-BLOCK ELEMENTS
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| 1. |
I ? A elements are named as alkali metals because |
| A. |
Their oxides are basic |
B. |
Their oxide and hydroxides are water soluble |
| C. |
Both a & b |
D. |
They are found in earth |
Answer: Option C
Explanation:
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| 2. |
The word Alkali means |
| A. |
Base |
B. |
Basic salt |
| C. |
Ashes |
D. |
Spirit |
Answer: Option C
Explanation:
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| 3. |
Formula of Chile saltpetre is |
Answer: Option A
Explanation:
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| 4. |
The elements which are very abundant in earth crust are |
Answer: Option A
Explanation:
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| 5. |
The oxides of beryllium BeO is |
| A. |
Acidic |
B. |
Basic |
| C. |
Amphoteric |
D. |
Neutral |
Answer: Option C
Explanation:
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| 6. |
Which element is necessary for normal leaf development? |
Answer: Option D
Explanation:
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| 7. |
Li is different from its family members due to |
| A. |
small size |
B. |
high charge density |
| C. |
less electropositivity |
D. |
all of the above |
Answer: Option D
Explanation:
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| 8. |
Carbonates of lithium are not stable like that of sodium due to |
| A. |
Low electronegativity |
B. |
Low electropositivity |
| C. |
Low charge density |
D. |
Not known yet |
Answer: Option B
Explanation:
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| 9. |
Nitrates of which pair of elements give different products on thermal decomposition? |
Answer: Option C
Explanation:
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| 10. |
Which one of the following is not an alkali metal? |
| A. |
Francium |
B. |
Caesium |
| C. |
Rubidium |
D. |
Radium |
Answer: Option D
Explanation:
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