The formula for the oxide formed by Eka-aluminum is:
1.
2.
3.
4. EO
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An example of metalloid elements in the periodic table is:
1. | Na and K | 2. | Cu and Al |
3. | As and Si | 4. | Ca and Mg |
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Among the following elements, the one that is not an actinoid is:
1. | Curium (Z=96) | 2. | Californium (Z=98) |
3. | Uranium (Z=92) | 4. | Terbium (Z=65) |
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Which of the following exhibits variable oxidation states?
1. | Na | 2. | Cu |
3. | Mg | 4. | Al |
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The outermost electronic configuration of the last element of the p-block in the 6th period is represented by:
1.
2.
3.
4.
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The following property/ies decrease from left to right across the periodic table and increase from top to bottom:
(i) Atomic radius (ii) Electronegativity (iii) Ionisation energy (iv) Metallic character
1. | (i) only | 2. | (i), (ii), and (iii) |
3. | (i), (iii), and (iv) | 4. | (i), and (iv) |
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The most non-metallic element among the given elements is
1. | Be | 2. | B |
3. | Mg | 4. | Al |
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An element whose IUPAC name is Ununtrium (Uut) belongs to:
1. s-Block elements
2. p-Block elements
3. d-Block elements
4. Inner transition elements .
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Which among the following is not a representative element?
1. | Tellurium | 2. | Tantalum |
3. | Thallium | 4. | Astatine |
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Match the element in Column I with that in Column II.
Column-I | Column-II | ||
(a) | Copper | (i) | Non-metal |
(b) | Fluorine | (ii) | Transition metal |
(c) | Silicon | (iii) | Lanthanoid |
(d) | Cerium | (iv) | Metalloid |
(a) | (b) | (c) | (d) | |
1. | (ii) | (iv) | (i) | (iii) |
2. | (ii) | (i) | (iv) | (iii) |
3. | (iv) | (iii) | (i) | (ii) |
4. | (i) | (ii) | (iii) | (iv) |
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