The order of basic character of given oxides is:
1. Na2O > MgO > Al2O3 > CuO
2. MgO > Al2O3 > CuO > Na2O
3. Al2O3 > MgO > CuO > Na2O
4. CuO > Na2O > MgO > Al2O3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA variable oxidation state is shown by which of the following?
1. Na
2. Cu
3. Mg
4. Al
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe lightest metal in the periodic table is:
1. H
2. Mg
3. Ca
4. Li
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following electronic configurations represents the d-block element?
1. 1s2 2s2 2p6 3s23p63d10 4s24p6
2. 1s2 2s2 2p6 3s23p63d10 4s24p1
3. 1s2 2s2 2p6 3s23p63d10 4s2
4. 1s2 2s2 3s23p6 4s2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe most common oxidation state of cerium (Ce) is:
1. +5, +3
2. +5, +4
3. +3, +4
4. +3, +5
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the electronic configuration of an atom has the lowest ionization enthalpy?
1. 1s2,2s22p5
2. 1s2,2s22p3
3. 1s2,2s22,3s1
4. 1s2,2s22p6
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA common trend in both groups I and II elements in the periodic table, as the atomic number increases, is :
1. Oxidizing power increases
2. Atomic radius increases
3. Maximum valency increases
4. Reactivity with water decreases
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe difference between ions and atoms is of:
1. relative size
2. Configuration
3. presence of charge
4. All of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe expected trend of change in atomic radius down the group is:
1. Continuous decrease
2. Continuous increase
3. Periodic one, an increase followed by a decrease
4. Periodic one, a decrease followed by an increase
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn element R forms the highest oxide R2O5. R belongs to:
1. 13th group
2. 15th group
3. 16 th group
4. 2nd group
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology