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Which one of the following is not a resonating structure of aniline ?

Which of the following is/are true for freundlich adsorption isotherm?

A gaseous alkane is burnt completely in oxygen. The volume of $O_2$required for complete combustion to the volume of $C{O}_2$ formed is 7:4. Determine the formula for alkane. [Alkane is $C_n{H}_{2n+2}$]

The correct sequence of increasing covalent character is represented by:

Hydration Energy of $M{g}^{2+}$ is lower than that of:

Which of the following reactions will not give 2-methyl-2-phenylpropane?

Let ${\lambda }_1+{\lambda }_2+...+{\lambda }_n=1$ where ${\lambda }_i>0$ for $i=1,2,...,n$. If $|a_i|<1$ and $\omega$ is a complex cube root of unity, then $|{\lambda }_1{a}_1\omega +{\lambda }_2{a}_2{\omega }^2+...+{\lambda }_n{a}_n{\omega }^n|$ cannot exceed

pH of 0.005M Ca(OH)₂ solution is

Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is :

Ferric oxide crystallizes in a hexagonal close packed structure of oxide,O^{​​​​​​2-} ions. Two out of every three octohedral holes are occupied by iron ions.what is the formula of ferric oxide?

Which of the following reactions are correct?

Identify the polymer given below.

Catalytic union of $H_2$ and $O_2$ to get $H_2$$O_2$ is found in

THe second excitation potential of a given atom is 12.08V. The ionisation potential must be

A. 12.08V

B. 13.6V

For a reaction $A+B⟶$ Products, the rate law is ---Rate = $k\left[A\right][B{]}^{3/2}$ Can the reaction be an elementary reaction? Explain.

Which of the outer electronic configuration represent argon?

$K_p$. for the reaction $N_2+3H_2\leftrightharpoons 2N{H}_3$ at ${400}^{\circ }C$ is $1.64\times {10}^{-4}$. Calculate $K_c$.

The Van Der Waal radius of oxygen nitrogen chlorine and fluorine is of the order??

Time taken by an electron to complete one revolution in the Bohr orbit of hydrogen atom in terms of its radius r and quantum number n is:

Which of the following reaction will not result in the formation of carbon-carbon bonds?

Sulphur on reacting with $HN{O}_3$ gives:

Drugs that mimic the natural messenger by switching on the receptor are called:

The hybridization of carbons labelled 3, 4 and 5

1 2 3 4 5 6 7

$HC\equiv C-CH=C=CH-CH=C{H}_2$ are

Which of the following elements has the largest ionisation enthalpy?

Soframicine is:

In the following reversible reaction$2S{O}_2+O_2\rightleftharpoons 2S{O}_3+QCal$

Most suitable condition for the higher production of $S{O}_3$ is

The reactivity of halogen atom is minimum in

[KCET 1985]

A compound X with molecular formula C₃H₈O can be oxidised to a compound Y with the molecular formula C₃H6O_2. X is most likely to be [MP PMT 1991]

pH calculation upon dilution of a strong acid solution is generally done by equating $n_{H^{+}}$ in original solution and diluted solution. However, if strong acid solution is very dilute, then $H^{+}$ from water are also to be considered. Take log3.7 = 0.568 and answer the following questions.

A 1 litre solution of pH = 4 (solution of strong acid) is added to the $\frac{7}{3}$ litre of water. What is the pH of resulting solution?

The reaction

is called :

Incorrect order of stability is:

Squaric acid dianion has:

The difference in the number of water molecules in gypsum and plaster of paris is:

How is nitrogen prepared in the laboratory? Write the chemical equations of the reactions involved.

Match the following
$\begin{array}{cc}\text{Compound}& \text{Boiling point}\\ \text{(A) butan-1-ol}& \text{(P)}108{}^{\circ }C\\ \text{(B) butan-2-ol}& \text{(Q)}117{}^{\circ }C\\ \text{(C) 2-methyl propan-1-ol}& \text{(R)}82{}^{\circ }C\\ \text{(D) 2-methyl propan-2-ol}& \text{(S)}100{}^{\circ }C\end{array}$