General Mechanism of Electrophilic Aromatic Substitution

Q. 28. Can SN1 reaction take place without protic polar solvent?

Q. 3BaCl2 + 2Na3P04-->Ba3(PO4) 2 + 6NaCl.Maximum amount of Ba3(PO4)2 formed when2 moles each of Na3PO4 and BaCl2 are allowed to react is34(1) 4 mol (2) 1 mol (3)2/3 mol(4) 1/3mol

Q. 14. Is odd electron counted in hybridisation like in free radicals or in NO2 type of species??

Q. The correct order for homolytic bond dissociation energies (△ H in kcal/mol) for CH4(A), C2H6 (B) and CH3Br (C) is (1) C>B>A (2) B>C>A (3) C>A>B (4) A>B>C

Q. 84 Is nitrogen trichloride polar or nonpolar.Why?

Q. the species that is not hydrolysed in water is(1)P4O10(2)BaO2(3)MgN2(4)CaC

Q. is borazole polar or non polar

Q. 41.Which has will effusion FASTER NH3 OR qCO WHAT ARE THEIR RELATIVE rates of effusion

Q. Water is polar or non polar? In it, all whether polar or non polar compounds are soluble? Covalent bonds are soluble in non polar solution so will it be soluble in water?

Q.

The octane number of a sample of petrol is 40. It means that its knocking property is equal to the mixture of

1. 40$\%$ n-heptane + 60$\%$ iso-octane

2. 40$\%$ petrol + 60$\%$ iso-octane

3. 60$\%$ n-heptane + 40$\%$ iso-octane

4. 60$\%$ petrol + 40$\%$ iso-octane

Q.

In the reaction

$HC\equiv CH+2AgN{O}_3\stackrel{N{H}_{4}OH}{\to }X+2N{H}_{4}N{O}_3+2H_{2}O$ 'X' is

1. $A{g}_{2}C$

2. $A{g}_2{C}_2$

3. AgC

4. AgOH

Q. how to know stable carbocation

Q. Explain how to find which is polar and non polar molecules in simple words??

Q. hydrated MgCl_{2 } associates with:- 1)6 H2O 2)8H2O 3)both 4)non

Q. 26. Do did electron species participate in hybridization. E.g. NO and NO2

Q. Which of the following is true for a half cell reaction ?

1. It involves only half a mole of electrolyte
2. It goes only half way to completion
3. It takes place at one electrode
4. It consumes half a unit of electricity

Q. Find the correct option(s) considering the following reactions sequence:


Given: Vapor density of C is 29 and E is anesthetic in nature.

1. F is salicylic acid
2. D on reduction with $LiAl{H}_4$ will give Grain alcohol
3. C on reduction with $NaB{H}_4$ will give simplest secondary alcohol
4. B on reduction with $C{H}_2{N}_2/B{F}_3$ will give anisole

Q.

What is bond dissociation enthalpy?

Q. Write the mechanism of the reaction of $HI$ with methoxybenzene.