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Science (English Medium) Class 12 - CBSE Question Bank Solutions

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Which of the following is the strongest reducing agent?

[7] P - Block Elements
Chapter: [7] P - Block Elements
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The ion or group detected by K2[HgI4] is ____________.

[7] P - Block Elements
Chapter: [7] P - Block Elements
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The correct order of increasing oxidising power is:

[7] P - Block Elements
Chapter: [7] P - Block Elements
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Which of the following is dihydric alcohol?

[7] Alcohols, Phenols and Ethers
Chapter: [7] Alcohols, Phenols and Ethers
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How many isomers of C5H11OH will be primary alcohols?

[7] Alcohols, Phenols and Ethers
Chapter: [7] Alcohols, Phenols and Ethers
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How many alcohol(s) with molecular formula \[\ce{C4H10O}\] is chiral in nature?

[7] Alcohols, Phenols and Ethers
Chapter: [7] Alcohols, Phenols and Ethers
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Number of metamers represented by molecular formula C4H10O is ____________.

[7] Alcohols, Phenols and Ethers
Chapter: [7] Alcohols, Phenols and Ethers
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Benzyl alcohol is obtained from benzaldehyde by:

[7] Alcohols, Phenols and Ethers
Chapter: [7] Alcohols, Phenols and Ethers
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Biomolecules are ____________.

[10] Biomolecules
Chapter: [10] Biomolecules
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Which of the following carbohydrate does not correspond to the general formula Cx(H2O)y?

[10] Biomolecules
Chapter: [10] Biomolecules
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H2S is more acidic than H2O because ____________.

[7] P - Block Elements
Chapter: [7] P - Block Elements
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Among the following compounds, the strongest acid is:

[7] Alcohols, Phenols and Ethers
Chapter: [7] Alcohols, Phenols and Ethers
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Which of the following conditions favours the existence of a substance in the solid state?

[1] Solid State
Chapter: [1] Solid State
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Among the following, which one is a wrong statement.

[7] P - Block Elements
Chapter: [7] P - Block Elements
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The correct order of oxidising power is:

[7] P - Block Elements
Chapter: [7] P - Block Elements
Concept: undefined >> undefined

Acidity of diprotic acid in aqueous solution increases in order.

[7] P - Block Elements
Chapter: [7] P - Block Elements
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Covalency of nitrogen is restricted to ______.

[7] P - Block Elements
Chapter: [7] P - Block Elements
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Lower molecular mass alcohols are ______.

[7] Alcohols, Phenols and Ethers
Chapter: [7] Alcohols, Phenols and Ethers
Concept: undefined >> undefined

How much ethyl alcohol must be added to 1 litre of water so that the solution will freeze at -14°C? (Kf for water = 1.86°C/mol)

[7] Alcohols, Phenols and Ethers
Chapter: [7] Alcohols, Phenols and Ethers
Concept: undefined >> undefined

Which of the following has highest ionisation enthalpy?

[7] P - Block Elements
Chapter: [7] P - Block Elements
Concept: undefined >> undefined
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