Ncleophilic addition reactions are catalysed__________________?

Related Mcqs:

1. Which of the following reactions may be assoclated with aldehyde and ketone ?

   A. nucleophile addition
   B. polymerization
   C. oxidation
   D. all of the above

2. Which of the following do not give aldol condensation reactions ?

   A. formaldehyde
   B. acetaldehyde
   C. diemthyl ketone
   D. propionaldehyde

3. In which of the following type of reactions energy of reactant is greater than energy of product________________?

   A. endothermic
   B. exothermic
   C. unpredictable
   D. same

4. Spontaneous reactions are_______________?

   A. Moderate
   B. Slow
   C. Fast
   D. not natural

5. Elimination bimolecular reactions involve____________________________?

   A. first order kinetics
   B. second order kinetics
   C. third order kinetics
   D. zero order kinetics

6. In melting of iron, which of the following reactions takes place in Bladt Furnace at 400°C- 600°C________?

   A. CaO+ SiO2——> CaSiO3
   B. 2FeS+3O2——–> 2Fe+ SO2
   C. FeSiO3———> FeSiO3
   D. Fe2O3+ 3CO——–> 2Fe+ 3CO2

   Submitted by: Muhammad Ali Kunbhar

7. The typical reactions of aldehyde is _____________?

   A. Electrophilic addition
   B. Nucleophilic substitution
   C. Nucleophilic addition
   D. Nucleophilic elimination

   Submitted by: Aamir khan Hullio

8. Which of the following will not give addition reaction with NaHSO3________________?

   A. HCHO
   B. CH3CHO
   C. CH3-CH2-CHO
   D. None of the above

9. Equilibrium state is achieved quickly by the addition of ________________?

   A. reactants
   B. acid
   C. base
   D. catalyst

10. Addition of 2nd electron to a uni negative ion is always____________________?

    A. Exothermic
    B. Endothermic
    C. Data is insufficient
    D. Unpredictable