Correct electronic configuration of Cu and Cr are____________.

Question based on following passage :
Adsorption is the process of attracting and retaining the adsorbate molecules on the surface of adsorbent. It is of two types i.e. Physisrption and chemisorption. To increase the rate of reaction, the substance called 'catalyst' is added. Promotors enhance the activity of catalyst while poison decrease the catalyst activity. Solutions may be true solution, suspension and colloids. Colloids are heterogenous but quite stable. On the basis of nature of interaction, colloids may be Lyophilic or Lyophobic. On the basis of type of dispersed phase particles, there may be multimolecular colloids, macromlecular colloids and associated colloids. The congulation of colloids may be done by boiling, dialysis or by mixing oppositely charged sols.
The best coagulating agent for \(Fe(OH)_3\) solution is :

The reaction
\(\text{Cr}_2\text{O}_3 + 2\text{Al} \rightarrow \text{Al}_2\text{O}_3 + 2\text{Cr}\)
\(\Delta G° = -421 \text{ kJ}\)
does not take place at room temperature because:

"The correct statement regarding the basicity of arylamines is :
A. Arylamines are generally more basic than alkylamines because of aryl group.
B. Aryl amines are generally more basic than alkylamines because the nitrogen atom in arylamines is 𝑠⁢𝑝 hybridised.
C. Aryl amines are generally less basic than alkylamines because the lone pair of electrons of nitrogen are delocalised by interaction with the pi electrons of the aromatic ring.
D. Aryl amines are generally more basic than alkylamines because the lone pair of electron of nitrogen are not delocalised by interaction with the pi electrons of aromatic ring.
E. Aryl amines are generally weaker bases than alkylamines due to electron withdrawing nature shown by aryl group.
Choose the correct answer from the options given below:"

Read the passage carefully and answer the questions
Replacement of a hydrogen atom in a hydrocarbon by an alkoxy or carboxyl group yields a class of compounds known as ethers. Ethers are classified as symmetrical or unsymmetrical on the basis of groups attached to the oxygen atoms. Diethyl ether, a symmetrical ether, has been widely used as an inhalation anesthetic. Ethers can be prepared by acid catalyzed intermolecular dehydration of alcohols and Williamson's synthesis. Acid catalyzed dehydration of alcohols is not generally preferred as it gives a mixture of elimination and substitution products. In Williamson's synthesis, an alkyl halide is allowed to react with sodium alkoxide. Ethers containing substituted Alkyl groups may also be prepared by this method. The C-O bond in ether is weakly polar and is cleaved under drastic conditions with excess of hydrogen halides. In electrophilic substitution, the alkoxy group deactivates the aromatic ring and directs the incoming group to ortho and para positions.
When ethanol is dehydrated in the presence of H₂SO₄, at 443 K and 413 K respectively, the products formed are

Match List-I With List-II

LISt – I (Solution)	LIST – II (Properties)
(A) Phenol and aniline	(I) Minimum boiling azeotrope
(B) Nitric acid and water	(II) Maximum boiling azeotrope
(C) Ethanol and water	(III) Hydrogen bonding
(D) Benzene and toluene	(IV) Ideal solution

Choose the correct answer from the options below:

Select the correct statement.

Which of the following statement is \text{\textbf\{incorrect\}?}

If \(x=e^y+e^y+\cdots\) to \(\infty, x>0\) then \(\frac{d^2 y}{d x^2}\) is:

Based on the data given below, which metal in its +2 oxidation state will not liberate hydrogen from acids ?

Metal	V	Ti	Co	Cr
\(\mathrm{E}^{\circ}\left(\mathrm{M}^{3+} / \mathrm{M}^{2+}\right)\)	-0.26	-0.37	+1.97	-0.41

\(7 XeF _4\) and \(XeF _6\) are :

The ratio of radii of the nuclei with the mass numbers given as 2, 16, 54 and 128, respectively, will be

If the interval in which the function \(f(x)=4 x^3-6 x^2-72 x+30\) is strictly decreasing, is \(( a , b )\) then \(a + b\) is equal to