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Which of the following compounds have the same geometry among the following :
(i) $C_2{H}_4$
(ii) $AlC{l}_3$
(iii) $C{H}_4$
(iv) $N{F}_3$

Which of the following molecules/species have minimum number of lone pairs?

How nickel is extracted by mond's process?

Which statement about aspirin is not true?
(a) Aspirin belongs to narcotic analgesics
(b) it is effective in relieving pain
(c) it has antiblood clotting action
(d) It is a neurologically active drug

Adsorption of a gas follows Freundlich adsorption isotherm

$\frac{x}{m}=k{P}^{\frac{1}{n}}$



$x$ is the mass of the gas adsorbed on mass $m$ of the adsorbent



The plot of $\log \left(\frac{x}{m}\right)$ vs $\log P$ is shown,

The value of n is:

Reaction of a carbonyl compound with one of the following reagents involves a nucleophilic addition followed by a dehydration. The reagent is:

Which of the following is called Sandmeyer's reaction?

The work functions of silver & sodium are $4.6\text{eV}$ and $2.3\text{eV}$ respectively. The ratio of the maximum kinetic energies of emitted electrons when illuminated by wavelength $155\text{nm}$ is $(hc=1240\text{eV nm})$

Analytical chemistry often includes identification of compounds from their colour, however colours can be often misleading as many compounds can have almost similar colour. Consider the reactions given below and select the reaction in which a colour obtained is different from others.

For the reaction, $N_2\left(g\right)+O_2\left(g\right)\rightleftharpoons 2NO\left(g\right)$, the equilibrium constant is $K_1$. The equilibrium constant is $K_2$ for $2NO\left(g\right)+O_2\left(g\right)\rightleftharpoons 2N{O}_2\left(g\right)$. What is K for the reaction $N{O}_2\left(g\right)\rightleftharpoons \frac{1}{2}{N}_2\left(g\right)+O_2\left(g\right)$?

Which among the following can be the starting material for the synthesis of benzylamine by Hoffmann-bromamide degradation reaction?

Arrange in decreasing order of boiling point.

$Si{H}_4,Ge{H}_4,Sn{H}_4,C{H}_4$

How would you explain the lower atomic radius of Ga as compared to Al?

Explain the term
copolymerisation and give two examples.

Two elements $A$ and $B$ have similar chemical properties. They don't form solid hydrogencarbonates, but react with nitrogen to form nitrides. $A$ and $B$, respectively, are:

1. 273.4

A compound M decomposes by two different reactions under different conditions as follows:

$2M\to 3B+C$ $\text{(yield = 80\%) (i)}$

$3M\to D+2C\text{(ii)}$

The total consumed moles of M are 10 and the moles of B and D formed are 6 mol and 1 mol respectively. The $\%$ yield of the (ii) reaction is:

Given below are two reactions "A" abd "B". They are made to react with aqueous base NaOH.



Which of the following is/are correct

Rationalise
the given statements and give chemical reactions:

•
Lead(II) chloride
reacts with Cl₂
to give PbCl₄.

•
Lead(IV) chloride is
highly unstable towards heat.

•
Lead is known not to
form an iodide, PbI₄.

What is crystal field theory in [To(H20)6]3+

Sleeping pills are
recommended by doctors to the patients suffering from sleeplessness
but it is not advisable to take its doses without consultation with
the doctor, Why?

In the above reaction, X stands for

If the enthalpy of hydrogenation of $C_6{H}_6\left(l\right)$ into $C_6{H}_{12}\left(l\right)$ is - 205 kJ and the resonance energy of $C_6{H}_6\left(l\right)$ is -152 kJ/mol then the enthalpy of hydrogenation of cyclohexene is: (Assume $\Delta H_{vap}$ of $C_6{H}_6\left(l\right),C_6{H}_8\left(l\right),C_6{H}_{12}\left(l\right)$ all are equal).

Which of the following does exist ?

Formation of 2-butene as major product by dehydration of 2-butanol is according to