Which of the following is an amphoteric hydroxide?

1.  BeOH2

2.  SrOH2

3.  CaOH2

4.  MgOH2

Subtopic:  Reasoning Questions |
 84%
From NCERT
NEET - 2019
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The correct order of the mobility of the alkali metal ions in aqueous solution is:

1. Li+>Na+>K+>Rb+

2. Na+>K+>Rb+>Li+

3. K+>Rb+>Na+>Li+

4. Rb+>K+>Na+>Li+

Subtopic:  Chemical Properties |
 69%
From NCERT
AIPMT - 2006
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In which of the following the hydration energy is higher than the lattice energy?

1. BaSO4

2. MgSO4

3. CaSO4

4. SrSO4

Subtopic:  Chemical Properties | Compounds of Ca and Na -Preparations, Properties & Uses |
 75%
From NCERT
AIPMT - 2007
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The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3, and BeCO3 is:

1. BeCO3<MgCO3<K2CO3<CaCO3

2. BeCO3<MgCO3<CaCO3<K2CO3

3. MgCO3<BeCO3<CaCO3<K2CO3

4. K2CO3<MgCO3<CaCO3<BeCO3

Subtopic:  Chemical Properties |
 65%
From NCERT
AIPMT - 2007
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The alkali metals form salt-like hydrides by direct synthesis at elevated temperatures. The thermal stability of these hydrides decreases in which of the following orders?

1. CsH > RbH > KH > NaH > LiH

2. KH > NaH > LiH > CsH > RbH

3. NaH > LiH > KH > RbH > CsH

4. LiH > NaH > KH > RbH > CsH

Subtopic:  Chemical Properties |
 66%
AIPMT - 2008
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An oxide that does not react with sodium hydroxide is:
1. B2O3
2. CaO
3. SiO2
4. BeO
Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
 57%
From NCERT
AIPMT - 2009
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Which one of the following compounds is a peroxide?

1. KO2

2. BaO2

3. MnO2

4. NO2

Subtopic:  Chemical Properties |
 58%
From NCERT
AIPMT - 2010
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Among the given options, what is the property of the alkaline earth metals that increases with their atomic number?
1. Solubility of their hydroxides in water
2. Solubility of their sulphates in water
3. Ionization energy
4. Electro-negativity

Subtopic:  Chemical Properties |
 73%
From NCERT
AIPMT - 2010
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 An active ingredient in bleaching powder that aids in the bleaching action is:

1.  CaOCl2

2.  CaO2Cl

3.  CaCl2

4.  CaOCl2

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
 73%
From NCERT
AIPMT - 2011
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Which one of the following alkali metals forms only the normal oxide M2O on heating in air?

1. Rb

2. K

3. Li

4. Na

Subtopic:  Chemical Properties |
 89%
From NCERT
AIPMT - 2012
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