# Solved papers for NEET Chemistry NEET PYQ-Alkaline Earth Metals

### done NEET PYQ-Alkaline Earth Metals Total Questions - 13

• question_answer1) The correct order of increasing thermal stability of ${{K}_{2}}C{{O}_{3}},\,MgC{{O}_{3}},\,CaC{{O}_{3}}$ and $BeC{{O}_{3}}$ is: [AIPMT (S) 2007]

A)
$BeC{{O}_{3}}<MgC{{O}_{3}}<{{K}_{2}}C{{O}_{3}}<CaC{{O}_{3}}$

B)
$BeC{{O}_{3}}<MgC{{O}_{3}}<CaC{{O}_{3}}<{{K}_{2}}C{{O}_{3}}$

C)
$MgC{{O}_{3}}<BeC{{O}_{3}}<CaC{{O}_{3}}<{{K}_{2}}C{{O}_{3}}$

D)
${{K}_{2}}C{{O}_{3}}<MgC{{O}_{3}}<CaC{{O}_{3}}<BeC{{O}_{3}}$

• question_answer2) In which of the following the hydration energy is higher than the lattice energy?  [AIPMT (S) 2007]

A)
$BaS{{O}_{4}}$

B)
$MgS{{O}_{4}}$

C)
$RaS{{O}_{4}}$

D)
$SrS{{O}_{4}}$

• question_answer3) Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy?                      [AIPMT (S) 2010]

A)
$CaS{{O}_{4}}$

B)
$BeS{{O}_{4}}$

C)
$BaS{{O}_{4}}$

D)
$SrS{{O}_{4}}$

• question_answer4) Property of the alkaline earth metals that increases with their atomic number  [AIPMT (S) 2010]

A)
solubility of their hydroxides in water

B)
solubility of their sulphates in water

C)
ionisation energy

D)
electro negativity

• question_answer5) Match list I with list II for the compositions of substances and select the correct answer using the code given below the lists.   [AIPMT (M) 2011]  List I (Substances) List II (Composition) Plaster of Pairs Epsomite Kieserite D. Gypsum 1. $CaS{{O}_{4}}\cdot 2{{H}_{2}}O$ 2. $CaS{{O}_{4}}.\frac{1}{2}{{H}_{2}}O$ 3. $MgS{{O}_{4}}\cdot 7{{H}_{2}}O$ 4. $MgS{{O}_{4}}\cdot {{H}_{2}}O$ 5. $CaS{{O}_{4}}$

A)
 3 4 1 2

B)
 2 3 4 1

C)

D)
 4 3 2 1

• question_answer6) Solubility of the alkaline earth's metal sulphates in water decreases in the sequence [NEET 2015 (C)]

A)
$Mg>Ca>Sr>Ba$

B)
$Ca>Sr>Ba>Mg$

C)
$Sr>Ca>Mg>Ba$

D)
$Ba>Mg>Sr>Ca$

• question_answer7) On heating which of the following releases $C{{O}_{2}}$ most easily?                        [NEET 2015 (Re)]

A)
${{K}_{2}}C{{O}_{3}}$

B)
$N{{a}_{2}}C{{O}_{3}}$

C)
$MgC{{O}_{3}}$

D)
$CaC{{O}_{3}}$

• question_answer8) Which of the following statements is false?  [NEET - 2016]

A)
$M{{g}^{2+}}$ ions form a complex with ATP

B)
$C{{a}^{2+}}$ ions are important in blood clotting [c] $C{{a}^{2+}}$ ions are not important in maintaining the regular beating of

C)
the heart. $M{{g}^{2+}}$ ions are important in the green parts of plants.

D)
None of these

• question_answer9) Which of the following oxides is most acidic in nature?                              [NEET - 2018]

A)
$\text{BaO}$

B)
$\text{BeO}$

C)
$\text{MgO}$

D)
$\text{CaO}$

• question_answer10) Among $\text{Ca}{{\text{H}}_{\text{2}}}$, $\text{Be}{{\text{H}}_{\text{2}}}$, $\text{Ba}{{\text{H}}_{\text{2}}}$, the order of ionic character is         [NEET - 2018]

A)
$\text{Be}{{\text{H}}_{\text{2}}}\text{ Ba}{{\text{H}}_{\text{2}}}\text{ Ca}{{\text{H}}_{\text{2}}}$

B)
$\text{Ca}{{\text{H}}_{\text{2}}}\text{ Be}{{\text{H}}_{\text{2}}}\text{ Ba}{{\text{H}}_{\text{2}}}$

C)
$\text{Be}{{\text{H}}_{\text{2}}}\text{ Ca}{{\text{H}}_{\text{2}}}\text{ Ba}{{\text{H}}_{\text{2}}}$

D)
$\text{Ba}{{\text{H}}_{\text{2}}}\text{ Be}{{\text{H}}_{\text{2}}}\text{ Ca}{{\text{H}}_{\text{2}}}$

• question_answer11) Which of the following is an amphoteric hydroxide?                          [NEET 2019]

A)
$Mg{{(OH)}_{2}}$

B)
$Be{{(OH)}_{2}}$

C)
$Sr{{(OH)}_{2}}$

D)
$Ca{{(OH)}_{2}}$

• question_answer12) The method used to remove temporary hardness of water is:                          [NEET 2019]

A)
Ion-exchange method

B)
Synthetic resins method

C)
Calgons method

D)
clarks method

• question_answer13) $HCl$ was passed through a solution of $CaC{{l}_{2}},\text{ }MgC{{l}_{2}}$ and $NaCl$. Which of the following compound(s) crystallise(s)? [NEET 2020]

A)
Only $NaCl$

B)
Only $MgC{{l}_{2}}$

C)
$NaCl,\text{ }MgC{{l}_{2}}$ and $CaC{{l}_{2}}$

D)
Both $MgC{{l}_{2}}$ and $CaC{{l}_{2}}$