Mention the constituent of food if the end result of the test shows :
White to yellow and yellow to orange colour, after adding ammonium hydroxide.

Mention the constituent of food if the end result of the test shows : Ash that does not burn after continued heating

Mention the constituent of food if the end result of the test shows : Turning blue-black after adding iodine solution.

Mention the constituent of food if the end result of the test shows : Blue green to deep red with appearance of precipitate when added to Fehling solution.

Name the pigments that appear to be yellow orange or red in colour?

ZnO shows yellow colour on heating due to

Salts M, N, O, P and Q undergo reactiom (i) to (v) respectively. Identify the cation present in these salts on the basis of these reaction. Tabulate your answer in the format given below. 1. When sodium hydroxide solution is added to the salt M, and heated strongly a colourless gas with a pungent smell is evolved which turm red litmus paper blue and gives dense white fumes with a moist glass rod with hydrochloric acid. 2. Addition of dilute hydrochloric acid to a solution of N gives a thick white precipitate which is soluble in hot water. 3. When ammonium hydroxide solution is added to the solution of 0 a light blue precipitate is obtained which is soluble in excess of ammonium hydroxide to form an inteme deep blue solution. 4. When ammonium hydroxide solution is added to the solution of P reddish brown (mustard colour) precipitate is obtained which ,is insoluble even in the excess of ammonium hydroxide solution. 5. When sodium hydroxide solution is added to the solution of Q a which coloured gelatinous precipitate is obtained which is soluble in excess of sodium hydroxide to form a clear solution

Orange-yellow colours of flowers and fruits are due to

Some leaves have patches of white or yellow or red colour. Such leaves are called ....... leave

Which of of the following is the composition of the yellow precipitate obtained in the test for phosphoates using ammonium molybdate?

When you subtract green light from the white light, you get yellow colour