HSC Science (Computer Science) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions for Chemistry

What is the action of the following reagents on aniline?

Bromine water

Draw the geometrical isomers of complex [Pt(NH₃)₂Cl₂].

Write the cell representation and calculate equilibrium constant for the following redox reaction:

`Ni_((s))+2Ag_((aq))^+ (1M)->Ni_((aq))^(2+)(1M)+2Ag_((s)) " at "25^@ C`

`E_(ni)^+`=-0.25V and `E_(Ag)^+=0.799V`

What is the action of acetic anhydride on diethylamine?

What is the action of the following reagents on aniline?

Acetic anhydride

What is the action of the following reagents on aniline?

Hot and conc. sulphuric acid

Write applications of electrochemical series.

Answer the following:

Identify oxidising agents and arrange them in order of increasing strength under standard state conditions. The standard potentials are given in parenthesis.

Al  (–1.66V), Al³⁺(–1.66V),  Cl₂  (1.36V),  Cd²⁺ (–0.4V), Fe (–0.44V),  I₂ (0.54V),  Br^- (1.09V).

Answer the following:

Which of the following species are reducing agents? Arrange them in order of increasing strength under standard state conditions. The standard potentials are given in parenthesis.

K (–2.93V),  Br₂(1.09V), Mg(–2.36V), Ce³⁺(1.61V), Ti²⁺(–0.37V), Ag⁺ (0.8 V), Ni (–0.23V).

Answer the following in brief.

How a catalyst increases the rate of reaction? Explain with the help of a potential energy diagram for catalyzed and uncatalyzed reactions.

Answer the following:

Predict whether the following reaction would occur spontaneously under standard state condition.

\[\ce{2Ag_{(s)} + Ni^{2+}_{ (aq)} -> 2Ag^{+}_{ (aq)} + Ni_{(s)}}\]

Answer the following in brief.

Explain graphically the effect of a catalyst on the rate of reaction.

Answer the following

Iron exhibits +2 and +3 oxidation states. Write their electronic configuration. Which will be more stable? Why ?

Answer the following

Give the similarities and differences in elements of 3d, 4d, and 5d series.

Write two applications of electrochemical series.

Discuss the position of d-block elements, lanthanoids and actinoids in the periodic table.

Define electrochemical series. 

How is ethyl amine prepared from methyl iodide?

How are propan-1-amine and propan-2-amine prepared from oxime?

The complex ion `[Co(H_2O)_5 (ONO)]^(2+) `

(A) linkage isomer

(B) ionisation isomer

(C) co-ordination isomer

(D) geometrical isomer