Potassium is kept-

1. Under cold water.                                 

2. In ammonia.

3. In alcohol.                                         

4. In kerosene.

Subtopic:  Physical Properties |
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Nitrolim (a nitrogenous fertilizer) is a mixture of-

1. Calcium carbide and calcium cyanamide.

2. Calcium oxide and calcium carbide.

3. Calcium cyanamide and carbon.

4. Calcium oxide and carbon.

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
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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 |
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Ca, on exposure of the moist air, forms a layer on its surface as : 

1. CaCO3                                             

2. CaOH2

3. CaCO3.CaOH2                               

4. CaO

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
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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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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 |
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Calcium hydride can be obtained by heating : 

1. Calcium oxide with hydrogen.

2. Calcium oxide with hydrogen under pressure.

3. Calcium with hydrogen under pressure.

4. Calcium with hydrogen at a very low temperature.

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
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Calcium hydroxide upon reacting with moist chlorine forms-

1. CaCl2                                 

2. CaOCl2

3. CaCl2.2H2O                       

4. CaCl2.7H2O

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
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A blue colored solution of an alkali metal in liq NH3 is due to the presence of -

1. M-atoms.                                         

2. M+ ions .

3. Solvated anions  .                           

4. Solvated electrons.

Subtopic:  Chemical Properties |
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Alkali metal ions are- 

1. Diamagnetic and coloured.

2. Diamagnetic and colourless.

3. Paramagnetic and coloured.

4. Paramagnetic and colourless.

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