Fehling solution react with HCHO to form precipitate of _____________?

Related Mcqs:

1. On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________?

   A. pink
   B. black
   C. yellow
   D. brick red

2. On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________?

   A. pink
   B. black
   C. yellow
   D. brick red

3. Which one of the following gives white precipitate with aqueous solution of BaCl2?

   A. NaHCO3
   B. NaNO3
   C. Na2CO3
   D. Na2CrO4

4. 58.5g of of NaCl per 1 dm3 of solution of NaCl in water the concentration of solution will be___________________?

   A. 0.1 M
   B. 1 m
   C. 1 M
   D. 0.1 N

5. moles of each aluminium and oxygen react with each other to produce aluminium oxide. The amount of product formed is______________________?

   A. 0.18 mole
   B. 0.27 mole
   C. 0.24 mole
   D. 0.09 mole

6. Which of the following elements react with steam to produce H2 gas?

   A. Pd
   B. Ni
   C. Sn
   D. All of the above

7. When CO2 is made to react with ethy1 magnesium iodide in dry ether followed by acid hydrolysis yields______________?

   A. Carboxylic acid
   B. Ethanoic acid
   C. Propanoic acid
   D. Butanoic acid

8. Which of the following compounds will react with Tollens reagent ?

   A. CH3-CHO
   B. CH3-CH-CH3
   C. CH3-COOH
   D. CH3-CO-CH2-CH3

9. Which of the following reagents will react with both aldehydes and ketones ?

   A. Grignard reagent
   B. Tollens reagent
   C. Fehlings reagent
   D. Benedicts reagent

10. Oxygen does not react with all except_________________?

    A. Alkali
    B. Acid
    C. Water
    D. Metals