The criteria for aromaticity is presence of_________?

Related Mcqs:

1. The yellow colour in photochemical smog is due to presence of__________________?

   A. dinitrogen oxide
   B. nitrogen dioxide
   C. chlorine gas
   D. chlorine dioxide

2. Hydrolysis of an oligosaccharide in the presence of acid yields________________?

   A. one monosaccharide unit
   B. No monosaccharide unit
   C. 2-9 monosaccharide unit
   D. many monosaccharide

3. The reaction of carboxylic acids with alcohols in presence of cone. H2SO4 is called _________________?

   A. esterification
   B. neutralization
   C. hydrolysis
   D. saponification

4. Formaldehyde condenses with phenol in the presence of dilute H2SO4 to yield________________?

   A. Nylon 66
   B. urotropine
   C. Aniline formaldehyde plastic
   D. Bakelite

5. Replacement of hydrogen of benzene by alkyl group in the presence of alkyl halide & aluminum chloride is known as__________________?

   A. Dows process
   B. Friedel & Craft acylation
   C. Friedel & Craft alkylation
   D. Clemmenson reduction

6. Sabatier Senderns reaction involve _____________ in presence of Ni?

   A. Aalkene & H2
   B. alkene & O2
   C. alkene & N2
   D. alkyne & Cl2

7. When two moles of ethyl chloride react with two moles of sodium in the presence of ether what will be formed ?

   A. 2 moles of ethane
   B. 1 mole of ethane
   C. 2 moles of butane
   D. 1 mole of butane

8. Which alcohol will undergo elimination reaction to give alkene in the presence of acidic potassium dichromate ?

   A. Primary alcohol
   B. Secondary alcohol
   C. Tertiary alcohol
   D. All of above

9. The hydrogenation of phenol in the presence of Ni and heat gives_________________?

   A. cyclohexane
   B. n – hexane
   C. 1 – hexanol
   D. cyclohexanol

10. Which of the following gases when passed through warm dilute solution of H2SO4 in presence of HgSO4 gives acetaldehyde

    A. CH₄
    B. C₂H₆
    C. C₂H₄
    D. C₂H₂

    Submitted by: Aamir khan Hullio