CBSE Class 12 Chemistry Questionbank

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16 of 16

Question 1 · 16 total

easy+1

Which concentration term does NOT change with temperature?

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Question 2 · 16 total

medium+1

Find the molarity (in mol/L) of a solution containing 0.5 mol of solute dissolved in 250 mL of solution.

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Question 3 · 16 total

medium+1

The quantity of charge required to deposit one mole of aluminium from $Al^{3+}$ ions is:

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Question 4 · 16 total

hard+1

The half-life of a first-order reaction is 100 s. If the initial concentration is doubled, the new half-life will be:

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Question 5 · 16 total

medium+1

Find the oxidation state of Mn in $KMnO_4$ .

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Question 6 · 16 total

medium+1

The oxidation state of cobalt in $[Co(NH_3)_6]^{3+}$ is:

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Question 7 · 16 total

medium+1

Which halide undergoes $S_N1$ substitution most readily?

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Question 8 · 16 total

medium+1

Assertion: Phenol is more acidic than ethanol.

Reason: The phenoxide ion is stabilised by resonance delocalisation of the negative charge.

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Question 9 · 16 total

easy+1

Tollens' reagent gives a silver mirror with:

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Question 10 · 16 total

hard+1

In aqueous solution, the correct order of basic strength is:

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Question 11 · 16 total

easy+1

Which of the following is a non-reducing sugar?

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Question 12 · 16 total

medium+1

A current of 2 A is passed for 965 s. How many moles of electrons flow through the cell? [F = 96500 C/mol]

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Question 13 · 16 total

easy+1

Which alkyl halide is most reactive toward an $S_N2$ reaction?

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Question 14 · 16 total

medium+1

The Lucas reagent test distinguishes primary, secondary and tertiary alcohols by:

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Question 15 · 16 total

hard+1

The complex ion $[Co(NH_3)_4Cl_2]^+$ exhibits:

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Question 16 · 16 total

medium+1

The sugar present in the backbone of DNA is:

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