Lactic acid on oxidation by alkaline potassium permanganate gives:____________?

Related Mcqs:

1. Potassium Permanganate is used for purifying drinking water, because_________?

   A. It is a sterilising agent.
   B. It dissolves the impurities of water.
   C. It is a reducing agent.
   D. It is an oxidising agent.

   Submitted by: Muhammad Ali Kunbhar

2. Which one of the following is also known as lactic acid ?

   A. 3-Hydroxy propanoic acid
   B. 2-Hydroxy propanoic acid
   C. 2-hydroxy butanoic acid
   D. 3-hydroxy butanoic acid

3. Which compound form benzoic acid on oxidation with acidified KMnO4 or K2Cr2O7 ?

   A. Toluene
   B. Ethyl benzene
   C. n-propyl benzene
   D. All

4. Grignard reagent gives carboxylic acid with____________?

   A. CO2
   B. CH3CHO
   C. COC2
   D. HCN

   Submitted by: Muhammad Ali Kunbhar

5. In alkaline battery the anode is made up of______________________?

   A. MnO2
   B. Zn
   C. AgO2
   D. cadmium

6. Alkali and alkaline earth metals impart colours when heated over burner. It is due to______________?

   A. Smaller electronegativity of alkali metals
   B. Smaller ionic radius of these metals
   C. De-excitation of electrons from higher energy levels to low energy level
   D. Excitation of electrons from low energy levels to higher energy levels

7. First ionization potential of alkaline earth metal is greater than alkali metals because___________________?

   A. They are more reactive
   B. They have greater atomic radii
   C. They have smaller atomic sizes
   D. All

8. Alkaline PH scale starts from?

   A. 8 to 14
   B. 6 to 10
   C. 7 to 11
   D. 0 to 14

   Submitted by: Chakar Hussain Shar

9. Acid present in acid rain may be_________________?

   A. H2SO4
   B. HNO3
   C. both A and B
   D. none of the above

10. Phosphorous acid upon thermal decomposition yields phosphoric acid and____________________?

    A. Phosphine
    B. Phosphorus
    C. Water
    D. Phosphorus pentoxide