Q 01/05

Which country is the world's largest producer of milk?

A) India

B) United States

C) China

D) Germany

Answer · why

A) India

It is also the top exporter of skimmed milk powder and the biggest producer and consumer of buffalo milk.

Q 02/05

India overtook which country in 1998 to become the world's largest milk producer?

A) Argentina

B) The USA

C) Russia

D) Brazil

Answer · why

B) The USA

Operation Flood, launched in 1970, was the world's largest dairy development programme and turned a milk-deficient nation into the top producer.

Q 03/05

Milk looks white because light is scattered by fat globules and by tiny clusters of which protein?

A) Albumin

B) Whey

C) Casein

D) Keratin

Answer · why

C) Casein

Casein micelles are just large enough to deflect light and make up about 80% of the protein in cow's milk.

Q 04/05

The main sugar in milk, lactose, is a disaccharide made of glucose and which other sugar?

A) Maltose

B) Fructose

C) Sucrose

D) Galactose

Answer · why

D) Galactose

Lactose intolerance is simply the lack of the enzyme lactase needed to split the two apart.

Q 05/05

Roughly what share of adults worldwide are affected by lactose malabsorption?

A) About 65%

B) About 10%

C) About 25%

D) About 90%

Answer · why

A) About 65%

It is rarest among people of Northern European descent and most common, at around 90%, in people of East Asian descent.