The property of alkali metals that increases with increasing atomic number is -
1. First ionization energy.
2. Electronegativity.
3. Hydration energy of the univalent ion.
4. Atomic radius.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn amphoteric oxide among the following is-
1. CaO
2. SrO
3. BeO
4. MgO
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPotassium is kept-
1. Under cold water.
2. In ammonia.
3. In alcohol.
4. In kerosene.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA colourless salt among the following that gives violet colour to Bunsen flame is -
1. Na2CO3
2. K2CO3
3. Cu(OH)2
4. MgCO3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe polarising power of Mg is close to that of –
1. Na
2. Cs
3. Li
4. K
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe incorrect statement among the following regarding Lithium is that-
1. The hydroxide, carbonate and nitrate decompose to give the oxide on heating.
2. It is the most electronegative element of group IA.
3. The hydrogen carbonate cannot be isolated as a stable solid.
4. It forms superoxide.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe reason for a lower basicity of hydroxides of alkaline earth metals than alkali metals is :
1. Alkali metals form ionic compounds.
2. The bond strength of oxygen is more for alkali metals.
3. The electropositivity of alkali metals is more than alkaline earth metals.
4. The electropositivity of alkali metals is less than alkaline earth metals.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyLithium has the minimum tendency to form ion. The aqueous solution of lithium is the:
1. Strongest reducing agent.
2. Poorest reducing agent.
3. Strongest oxidising agent.
4. Poorest oxidising agent.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe strongest factor responsible for reducing action of Li metal in an aqueous solution is :
1. Sublimation enthalpy .
2. Ionisation enthalpy.
3. Hydration enthalpy .
4. Electron-gain enthalpy.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA compound soluble in pyridine is:-
1. LiCl
2. CsCl
3. NaCl
4. KCl
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology