An alkali metal that reacts with nitrogen to form nitride is -
1. Li
2. Na
3. Cs
4. None of the above.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn alkali metals that forms only the normal oxide M2O on heating in air is-
1. Rb
2. K
3. Li
4. Na
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAlkali metals are not found in nature in their elemental state because they are :
1. Less reactive due to low ionization energies.
2. Highly reactive due to low ionization energies.
3. Highly reactive due to low electron gain enthalpy.
4. Less reactive due to low electron gain enthalpy.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct order of thermal stability of carbonates of Group 2 elements is-
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySuperoxide is formed on heating with an excess of air by:-
1. Li, Na
2. Mg, Be
3. Na, K
4. K, Rb
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn the reaction (superoxide) the metal is -
1. Li
2. Na
3. K
4. Ba
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA blue coluored solution of an alkali metal in liq NH3 is due to the presence of -
1. atoms.
2. ions .
3. Solvated anions .
4. Solvated electrons.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe characteristic of alkaline earth metals is that-
1. Their general oxidation state is +1
2. They have a smaller size than alkali metals.
3. They are electronegative in nature.
4. They are strong oxidizing agents.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySolubility of alkaline earth metal sulphates in water decreases in the sequence:
1. Mg > Ca > Sr >Ba
2. Ca > Sr > Ba > Mg
3. Sr > Ca > Mg > Ba
4. Ba > Mg > Sr > Ca
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySodium in liquid ammonia is used as :
1. Oxidizing agent .
2. Reducing agent.
3. Hydrolyzing agent.
4. Precipitating agent.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology