Which is the formula of tetra-amine choloro-nitro platinum (IV) sulphate is

1. [PtCl(NO₂)(NH3)₄]SO₄
2. [Pt (NO2) Cl (NH3)4]SO4
3. [PtCl(NH3)₄ (NO₂)]SO₄
4. [Pt (NO₂)(NH3)₄ Cl]SO₄
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Answer: B
Explanation:
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The shape of ions containing dsp3 hybridization is

1. square planar bipyrmidal
2. octahedral
3. Square planar
4. Tetrahedral
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Answer: A
Explanation:
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The purest form of iron is

1. Wrought iron
2. pig iron
3. cast iron
4. Steel
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Answer: A
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Coordination number of iron in K4 [Fe(CN)₆] is-----------------.

1. 6
2. 4
3. 1
4. 2
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Answer: A
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The paramagnetic behaviour is the strongest for----------------.

1. (a) Fe and Mn
2. Fe³⁺ and Mn²⁺
3. Fe²⁺ and Mn³⁺
4. Fe2⁺ and Mn3⁺
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Answer: B
Explanation:
• BEACUASE OF GRATER NUMBER OF UNPAIRED ELECTRONS
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The elements in which 4f orbitals are progressively filled up are called ________:

1. Actinides
2. Transition elements
3. Lanthinides
4. Halogens
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Answer: A
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The first element of each period in the periodic table has:

1. Two electrons in the first shell
2. One electron in the first shell
3. One s-electron in the outermost shell
4. 8-electron in valance shell
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Answer: C
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The element with atomic number 57 belongs to:

1. Transition elements
2. Lanthanides
3. S – block
4. Actinides
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Answer: B
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In the periodic table the element with atomic number 16 will be in:

1. iii-period
2. v-period
3. iv-period
4. vi-period
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Answer: A
Explanation:
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In which group of periodic table will the element with atomic number “17” occurs:

1. ii-group
2. iii-group
3. vii-group
4. None of these
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Answer: C
Explanation:
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