Assertion: When an alkali metal dissolves in liquid NH3 the solution acquires different colors.

Reason: Paired electrons are present in ammonia.

1. Assertion is true and the Reason is the correct explanation of Assertion.

2. Assertion is true but the Reason is not the correct explanation of Assertion.

3. Assertion is true but the Reason is false.

4. Both Assertion and Reason are false.

Subtopic:  Reasoning Questions |
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Arrange the following ions in increasing order of their mobility in the aqueous solution:

Li+, Na+, K+, Rb+ and Cs+

1. Li+ > Na+ > K+ > Rb+ > Cs+  2. Li+ < Na+ < K+ > Rb+ > Cs+  3. Li+ < Na+ < K+ < Rb+ < Cs+  4. Na+ < Li+ < K+ < Cs+ < Rb+

 

 

Subtopic:  Reasoning Questions |
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The alkali metal that gives hydrated salts is - 

1. Li

2. Na

3. K

4. Cs

Subtopic:  Reasoning Questions |
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The most stable (thermally) carbonate of alkaline earth metal is-

1. MgCO3

2. CaCO3

3. SrCO3

4. BaCO3

Subtopic:  Chemical Properties | Reasoning Questions |
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Li2CO3 decomposes at a lower temperature because -

1. Lithium carbonate is not stable to heat.

2. Lithium carbonate is ionic in nature.

3. Lithium ion is unable to polarise carbonate ion.

4. Electropositive character of lithium is the highest.

Subtopic:  Reasoning Questions |
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Alkali and alkaline earth metals cannot be obtained by chemical reduction method because they are the strongest :

1. Oxidizing agents.

2. Reducing agents.

3. Hydrating agents.

4. Drying agents.

Subtopic:  Reasoning Questions |
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LiF is almost insoluble in water whereas LiCl is soluble in water and acetone both, because of: 

1. Greater covalent character of LiCl as compared to LiF.

2. Greater hydration energy of  LiF as compared to LiCl.

3. Greater size of LiF as compared to LiCl.

4. Greater lattice energy of LiF as compared to LiCl.

Subtopic:  Chemical Properties | Reasoning Questions |
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The correct statement(s) among the following options is/are:

1. BeO is almost insoluble but BeSO4 is soluble in water.

2. BaO is soluble but BaSO4 is insoluble in water.

3. LiI is more soluble than KI in ethanol.

4. All of the above.

Subtopic:  Chemical Properties | Reasoning Questions |
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