The strongest base among the following is-

1. AlOH3                                   

2. MgOH2

3. CaOH2                                 

4. BaOH2

Subtopic:  Preparations, Properties & Uses of S Block Elements | Compounds of Ca and Na -Preparations, Properties & Uses |
 81%
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When magnesium ribbon is heated to redness in an atmosphere of nitrogen and subsequently cooled with water, the gas evolved is-

(1) N2                                               

(2) NH3

(3) H2                                               

(4) CO2

Subtopic:  Chemical Properties |
 59%
From NCERT
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The ion of which of the following metals has least ionic conductivity in the aqueous solution-

(1) Lithium                                           

(2) Sodium 

(3) Potassium                                         

(4) Rubidium

Subtopic:  Physical Properties |
 85%
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Magnesium hydride can be prepared by the action of-

(1) Lithium hydride on magnesium chloride

(2) Aluminium hydride on magnesium chloride

(3) Lithium aluminium hydride on magnesium chloride

(4) Lithium magnesium hydride on lithium chloride

Subtopic:  Chemical Properties |
 65%
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Which of the following is not the characteristics of alkali metals –

1. Low m.p.                                         

2. Low electronegativity

3. High ionisation energies

4. Their ions are isoelectronic with noble gases

Subtopic:  Chemical Properties |
 73%
From NCERT
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Calcium can be obtained by the electrolysis of-

1. CaCl2 and CaF2                     

2. CaOH2

3. CaCl2                                   

4. CaF2

Subtopic:  Physical Properties |
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The incorrect statement regarding Be(II group) is -

1. It forms an ionic carbide.

2. Its carbonate decomposes on heating.

3. Its halides are covalent.

4. It is easily attacked by water.

Subtopic:  Physical Properties |
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The atomic volumes of alkali metals are in the order-

(1) Li > Na > K > Rb > Cs                           

(2) Li > Na = K > Rb > Cs

(3) Li < Na < K < Rb < Cs                           

(4) Li < Na < K < Rb = Cs

Subtopic:  Physical Properties |
 67%
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Lithium has the minimum tendency to form Li+ ion. The aqueous solution of lithium is the:

1. Strongest reducing agent.                      

2. Poorest reducing agent.

3. Strongest oxidising agent.                

4. Poorest oxidising agent.

Subtopic:  Physical Properties |
 80%
From NCERT
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Alkali metals show-

(1) Only +1 oxidation state

(2) Only –1 oxidation state

(3) +1 and +2 oxidation states

(4) –1 and –2 oxidation states.

Subtopic:  Physical Properties |
 92%
From NCERT
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