Question : Which water-soluble pigment belonging to a phenolic group is present in pomegranate, eggplant, black carrot, and red cabbage?

Option 1: Phycoerythrin

Option 2: Phycobilins

Option 3: Betalains

Option 4: Anthocyanins

Question : A person will have brown eyes, blue eyes or black eyes depending on the particular pigment present in the:

Option 1: Pupil

Option 2: Cornea

Option 3: Iris

Option 4: Choroid

Question : The purest form of water is

Option 1: Tap water

Option 2: Rain water

Option 3: Ground water

Option 4: Distilled water

Question : Iron rusts quickly in

Option 1: Rain water

Option 2: Sea water

Option 3: Distilled water

Option 4: River water

Question : Suez canel connects which of the following water bodies ?

Option 1: Mediterranean Sea and Black Sea

Option 2: Mediterranean Sea and Red Sea

Option 3: Pacific Ocean and Atlantic Ocean

Option 4: Mediterranean Sea and Arctic Ocean

Question : Which of the following is not soluble in water?

Option 1: Lead sulphate

Option 2: Zinc sulphate

Option 3: Potassium sulphate

Option 4: Sodium sulphate