Compounds of Ca and Na -Preparations, Properties & Uses Past Year (2006 - 2015) MCQs The s-Block Elements (OLD NCERT) Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

A compound that releases CO₂ most easily upon heating is?
1. $K_{2} C O_{3}$
2. $N a_{2} C O_{3}$
3. $M g C O_{3}$
4. $C a C O_{3}$

Subtopic: Chemical Properties | Compounds of Ca and Na -Preparations, Properties & Uses |

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In Castner-Kellner cell for the production of sodium hydroxide:
1. brine is electrolyzed using graphite electrodes
2. molten sodium chloride is electrolysed
3. sodium amalgam is formed at mercury cathode
4. brine is electrolyzed with Pt electrodes

Subtopic: Compounds of Ca and Na -Preparations, Properties & Uses |

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An active ingredient in bleaching powder that aids in the bleaching action is:

1. $Ca {(OCl)}_{2}$

2. ${CaO}_{2} Cl$

3. ${CaCl}_{2}$

4. ${CaOCl}_{2}$

Subtopic: Compounds of Ca and Na -Preparations, Properties & Uses |

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A compound that has higher hydration enthalpy than the lattice enthalpy is:

1. ${CaSO}_{4}$

2. ${BeSO}_{4}$

3. ${BaSO}_{4}$

4. ${SrSO}_{4}$

Subtopic: Chemical Properties | Compounds of Ca and Na -Preparations, Properties & Uses |

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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 |

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