In replacement reaction

The reaction will be most favorable if M happens to be -

1. K
2. Rb
3. Li
4. Na

Subtopic: Reasoning Questions |

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Match List I with List II for the composition of substances and select the correct answer using the code given below:

List-I Substances	List-II Composition
(A) Plaster of paris	(i) CaSO₄. 2HO
(B) Epsomite	(ii) CaSO₄.½H₂O
(C) Kieserite	(iii) MgSO₄.7H₂O
(D) Gypsum	(iv) MgSO₄.H₂O
	(v) CaSO₄

Code :

	(A)	(B)	(C)	(D)
1.	(iv)	(iii)	(ii)	(i)
2.	(iii)	(iv)	(i)	(ii)
3.	(ii)	(iii)	(iv)	(i)
4.	(i)	(ii)	(iii)	(v)

Subtopic: Biological Importance of S Block Elements and & Its Ore |

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The compound A on heating gives a colourless gas and a residue that is dissolved in water to obtain B. Excess of CO₂ is bubbled through an aqueous solution of B. C is a solid. Solid C on gentle heating gives back A. The compound A is -

1. Na₂CO₃

2. K₂CO₃

3. CaSO₄.2H₂O

4. CaCO₃

Subtopic: Chemical Properties |

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Among the following which one has the highest cation to anion size ratio?

1. CsF

2. LiF

3. NaF

4. CsI

Subtopic: Physical Properties |

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The correct order of the mobility of the alkali metal ions in aqueous solution is :

1. $L i^{+} > N a^{+} > K^{+} > R b^{+}$

2. $N a^{+} > K^{+} > R b^{+} > L i^{+}$

3. $K^{+} > R b^{+} > N a^{+} > L i^{+}$

4. $R b^{+} > K^{+} > N a^{+} > L i^{+}$

Subtopic: Chemical Properties |

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The correct order of increasing thermal stability of K₂CO₃, MgCO₃, CaCO₃ and BeCO₃ is:

1. $B e C O_{3} < M g C O_{3} < K_{2} C O_{3} < C a C O_{3}$

2. $B e C O_{3} < M g C O_{3} < C a C O_{3} < K_{2} C O_{3}$

3. $M g C O_{3} < B e C O_{3} < C a C O_{3} < K_{2} C O_{3}$

4. $K_{2} C O_{3} < M g C O_{3} < C a C O_{3} < B e C O_{3}$

Subtopic: Chemical Properties |

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The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. 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 |

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In the case of alkali metals, the covalent character decreases in the order

1. MCl>Ml>MBr>MF

2. MF>MCl>MBr>Ml

3. MF>MCl>Ml>MBr

4. Ml>MBr>MCl>MF

Subtopic: Chemical Properties |

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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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Which one of the following compounds is a peroxide?

1. $K O_{2}$

2. $B a O_{2}$

3. $M n O_{2}$

4. $N O_{2}$

Subtopic: Chemical Properties |

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Select Chapter Topics:

Physical Properties

Chemical Properties

Preparations, Properties & Uses of S Block Elements

Reasoning Questions

Compounds of Ca and Na -Preparations, Properties & Uses

Biological Importance of S Block Elements and & Its Ore

In replacement reaction

The reaction will be most favorable if M happens to be -

1. K
2. Rb
3. Li
4. Na

Select Chapter Topics:

Physical Properties

Chemical Properties

Preparations, Properties & Uses of S Block Elements

Reasoning Questions

Compounds of Ca and Na -Preparations, Properties & Uses

Biological Importance of S Block Elements and & Its Ore

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Select Chapter Topics:

Physical Properties

Chemical Properties

Preparations, Properties & Uses of S Block Elements

Reasoning Questions

Compounds of Ca and Na -Preparations, Properties & Uses

Biological Importance of S Block Elements and & Its Ore

In replacement reaction The reaction will be most favorable if M happens to be - 1. K 2. Rb 3. Li 4. Na

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Select Chapter Topics:

Physical Properties

Chemical Properties

Preparations, Properties & Uses of S Block Elements

Reasoning Questions

Compounds of Ca and Na -Preparations, Properties & Uses

Biological Importance of S Block Elements and & Its Ore

NEET Information

courses

Company

Botany Questions

Chemistry Questions

Physics Questions

Zoology Questions

In replacement reaction

The reaction will be most favorable if M happens to be -

1. K
2. Rb
3. Li
4. Na