Question

Name five basic substance and their behaviour with turmeric onion red cabbage extract

Answer 1

✴HOLA MATE ✴

ANSWER ⤵⤵

• Turmeric: Turmeric is another natural indicator. Turmeric is yellow in colour. Turmeric solution or paper turns reddish brown with base. Turmeric does not change colour with acid.

• Red cabbage: The juice of red cabbage is originally purple in colour. Juice of red cabbage turns reddish with acid and turns greenish with base.

• Olfactory Indicators: Substances which change their smell when mixed with acid or base are known as olfactory indicators. For example onion, vanilla, clove, etc.

• Onion: Paste or juice of onion loses its smell when added with base. It does not change its smell with acid.

• Vanilla: The smell of vanilla vanishes with base, but it’s smell does not vanishes with an acid.

Olfactory indicators are used to ensure the participation of visually impaired students in laboratory.

• Synthetic Indicator: Indicators that are synthesized in laboratory are known as synthetic indicators. For example; phenolphthalein, methyl orange, etc.

Phenolphthalein is a colourless liquid. It remains colourless with acid but turns into pink with a base.

Methyl orange is originally orange in colour. It turns into red with acid and turns into yellow with base.

HOPE IT MAY HELP✔ ✔

THANK YOU ❤ ❤

Answer 2

Answer:

BASIC SUBSTANCE HAVE THE FOLLOWING GENERAL BEHAVIOUR .

1 ] they generally taste bitter .

2 ] they turn red litmus blue .

3 ] they Neutralise acids .

4 ] caustic alkalis corrode glass and some metals like aluminium , zinc , tin and lead .

Explanation: