Chemical Properties of Ethers

Q.

When diethyl ether is treated with excess of Cl₂ in presence of sunlight, then the product formed is

1. CH₃CHCl-O-CH₂CH₃

2. CH₃CHCl-O-CHClCH₃

3. CCl₃CCl₂-O-CCl₂CCl₃

4. CCl₃CH₂-O-CH₂CCl₃

Q. The pH value of decinormal solution of NH_4OH which is 20% ionised i

Q. Which is more stable methoxy methyl carbocation or tertiary butyl carbocation

Q. What is (X) in the following reaction?

1. $C{H}_3-COOH$
2. $BrC{H}_2-COOH$
3. $(C{H}_{3}CO{)}_{2}O$
4. $CHOCOOH$

Q. 18. 0.202gm of a substance gave on combustion 0.361gm of CO2and 0.147gm H2O .What is the empirical formula of the substance?

Q. 17. Q . For an alkaline aqueous solution is pH >pOH ?

Q. How much of carbon dioxide bas is liberated at STP by the complete combustion of 1.5g of ethane?

Q. What will be the effect on the ph of CH3COONa when CH3COOH is mixed in its aqueous solution?( Effect on CH3COONa)

Q. Which of the following aqueous solutions is a buffer with a pH greater than 7.0? For HNO_{2 }, K_a = 4.6 × 10^{-4 }, and for NH_3, K_{b }=1.8 × 10^{-5} (1) 10 mL of 0.1 M NH_3, (aq) + 10 mL of 0.1 M HCl (aq) (2) 10 mL of 0.1 M HNO_2, (aq) + 5.0 mL of O.1 M NaOH (aq) (3) 10 mL of 0.1 M HNO_2, (aq) + 10 mL of 0.1 M NaOH (aq) (4) 10 mL of 0.1 M NH_3, (aq) + 5.0 mL of 0.1 M HCl (aq)

Q. 24.Why their is difference when naoh and na2co3 are titrated with phenolphthalein and methyl orange in HCL

Q. What is lewis acid and base ?

Q. Find the missing reagents.

1. $x=LiAl{H}_4,y=NaB{H}_4$
2. $x=LiAl{H}_4/AlC{l}_3,y=LiAl{H}_4$
3. $x=LiAl{H}_4,y=LiAl{H}_4/AlC{l}_3$
4. $x=H_2/Ni,y=H_2/Pt$

Q. 80 Why is ammonia termed as a base though it does not contain OH- ions

Q. A chiral $C_5{H}_{10}O$ ether reacts with hot $HI$ to give a $C_5{H}_{10}{I}_2$ product. Treatment of this with hot $KOH$ in ethanol produces 1, 3-pentadiene. What is the structure of the original ether?

1. 
2. 
3. 
4. 

Q. Identify the nature of the compound (A).

1. $\left(C{H}_3{)}_{2}C\right(OH).C{H}_2{O}^{18}H$
2. $\left(C{H}_3{)}_{2}C\right(O^{18}H)C{H}_{2}OH$
3. $\left(C{H}_3{)}_{2}C\right(O^{18}H)C{H}_2{O}^{18}H$
4. $\left(C{H}_3{)}_{2}C\right(OH)C{H}_{2}OH$

Q. which of the followung is most acidic? a)o-nitro phenol b)p-nitro pheno

Q. What is the correct product of the following reaction?


The major product is :

1. 
2. 
3. 
4. 

Q. Which of the following solutions will have pH close to 1?

Q.
Major product of the reaction is:

1. 
2. 
3. 
4. 

Q. Anisole is treated with $HI.$ Products obtained are:-

1. Ethyl alcohol and phenyl iodide
2. methyl alcohol and benzene
3. methyl iodide $\&$ phenyl iodide
4. methyl iodide $\&$ phenol

Q.

The ether that undergoes electrophilic substitution reactions is:

1. CH₃OC₂H₅

2. C₆H₅OCH₃

3. CH₃OCH₃

4. C₂H₅OC₂H₅

Q. The incorrect statement regarding C is:

1. Compound C is $C{H}_3-C\equiv C-C{H}_3$
2. C answers positive Tollens’ test
3. In compound C, all the four carbons are linear
4. Compound C on ozonolysis gives a diketone

Q. The correct order of the decreasing order of basic strengths of the following compounds is:

1. I > II > III
2. II> III > I
3. III > II > I
4. II > I > III

Q.

The combustion of one mole of butane(C₄H₁₀) takes place at 298K and 1atm.After combustion CO₂(g) and H₂O(l) are produced and 2878.7kJ/mol of heat is liberated. Compute the standard enthalpy of formation of CO₂ (g) and H₂O(l) are -393.5 kJ/mol and -285.8kJ/mol respectively.

Q. 20. Acidity of bf3 can be explain on the basis of arrhenius concept

Q. 12 ml of mix. containing co and n required 7ml oxygen to form co2 and no on combustion the vol. of co require

Q.
$\text{Number of equivalent(s) of HI}$ required for a complete reaction with the above compound is/are

Q. In the following reaction sequence, the products B and C so formed, both give same product $(\pm )$ epichlorohydrin, when reacted with base NaOH.


Products B and C are positional isomers.
Select the true option(s) from the following about epichlorohydrin.

1. It is a halohydrin
2. It is an epoxide
3. $C{H}_{3}C{H}_2{O}^{-}$ attacks on carbon attached to $Cl$ to give
4. $C{H}_{3}C{H}_2{O}^{-}$ attacks on less hindered carbon attached to $O$ to give

Q. Dieldrin, an insecticide, contains C, H, Cl and O. Combustion of 29.72 mg of Dieldrin gave 41.21 mg CO2 and 5.63 mg of H2O. In a separate analysis 25.31 mg of Dieldrin was converted into 57.13 mg AgCl. What is the empirical formula of Dieldrin?

Q. 2-Ethoxy-2-methylpropane when reacted with HI, products obtained are

1. Iodoethane and 2-Methylpropan-2-ol
2. Iodoethane and 2-methylpropene
3. 2-Iodo-2-methylpropane and ethanol
4. ethene $\&$ 2-Iodo-2-methylpropane