List of practice Questions

A compound (A) with molecular formula C\(_4\)H\(_9\)N on reduction with DIBAL-H followed by hydrolysis, gives a compound (B). Compound (B) gives positive Tollens’ test but does not give iodoform test. Compound (B) can also be obtained when ethanal is treated with dilute NaOH followed by heating. Identify (A) and (B). Write the reactions of (A) with DIBAL-H followed by hydrolysis.
Write any two differences between SN\(_1\) and SN\(_2\) reactions. Which of the following compounds would undergo SN\(_1\) reaction faster and why?
SN1 and SN2 reactions.
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Answer the following about the complexes \([ \text{FeF}_6]^{3-} \text{ and } [\text{Fe(CN)}_6]^{4-}\):
(i) Write the hybridization involved in each case.
(ii) Which of them is the outer orbital complex and which one is the inner orbital complex?
(iii) Compare their magnetic behaviour.
[Atomic number: Fe = 26]

The rate of a reaction:
A + B −→ product
is given below as a function of different initial concentrations of A and B.

Experiment\([A]\) (mol L\(^{-1}\))\([B]\) (mol L\(^{-1}\))Initial Rate (mol L\(^{-1}\) min\(^{-1}\))
10.010.01\(5 \times 10^{-3}\)
20.020.01\(1 \times 10^{-2}\)
30.010.02\(5 \times 10^{-3}\)
Vapour pressure of pure water at 298 K is 24.8 mm Hg. Calculate the lowering in vapour pressure of an aqueous solution which freezes at –0.3°C. (K\(_f\) of water = 1.86 K kg mol\(^{-1}\))

Answer the following:
(i) What happens to the colour of the complex \([ \text{Ti(H}_2\text{O)}_6 ]^{3+}\) when heated gradually?
(ii) Write the electronic configuration for a \(d^5\) ion if \(\Delta_o < P\).
(iii) Write the hybridization and magnetic behaviour of the complex \([ \text{Ni(CO)}_4 ]\).
(Atomic number: Ni = 28)

Give reasons for the following:
(a)The pH of aqueous NaCl increases when it is electrolyzed.
(b) Unlike dry cell, mercury cell has a constant cell potential through its lifetime.
(c) Conductivity of solution decreases with dilution.
Differentiate between:
(i) Double salt and Complex compound
(ii) Didentate ligand and Ambidentate ligand
Observe the graph in the given figure and answer the following questions:
linear relationship between log |R0| and time.

(a) Predict the order of reaction.
(b) What is the slope of the curve?
How do you explain the following?
(a) Presence of an aldehyde group in glucose.
(b) Presence of five –OH groups in glucose.
Write IUPAC names of the following coordination compounds:
\([ \text{CoCl}_2(\text{en})_2]\text{SO}_4 \)
(ii) \( \text{K}_3[\text{Fe}(\text{C}_2\text{O}_4)_3] \)
(ii) Didentate ligand and Ambidentate ligand
Assertion (A): Phenol is strongly acidic as compared to ethanol.
Reason (R): Phenoxide ion is more stable than ethoxide ion.
Draw the structures of major monohalo products in each of the following reactions:
methylbenzene (CH3C6H5)

\( \text{CH}_3\text{C}_6\text{H}_5 + \text{HI} \longrightarrow \) ?
(b) \( \text{C}_6\text{H}_6 + \text{Br}_2 \longrightarrow \) Heat or UV light ?
State Henry's law. Why are aquatic species more comfortable in cold water as compared to warm water?
Pyranose ring of glucose is formed due to the reaction between:
Assertion (A): Actinoids show wide range of oxidation states.
Reason (R): Actinoids are radioactive in nature.
Assertion (A): Hydrolysis of an ester follows first order kinetics.
Reason (R): The concentration of water does not get altered much during the reaction.
The unit of rate and rate constant are the same for a:
Which of the following cell converts the energy of combustion of fuel into electrical energy?
Assertion (A): Boiling point of (CH₃)₃N is higher than that of CH₃CH₂CH₂NH₂.
Reason (R): Hydrogen bonding is more extensive in CH₃CH₂CH₂NH₂.
Which one of the following amines gives an alcohol on reaction with HNO₂?
A solution of acetone in ethanol:
In the Hinsberg method for separation of primary, secondary, and tertiary amines, the reagent used is:
Which of the following is the softest metal?
According to Werner’s theory of coordination compounds: