26. Useful Animal Products

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1.
Lac is the scarlet resinous secretion from ________?
2.
Butter is a ________?
3.
The highest fat content is found in the milk of which of the following animals? (UPSC Prelims 1991)
4.
What is the average fat content of buffalo milk? (UPSC Prelims 1997)
5.
At which stage in its life-cycle does the silkworm yield the fibre of commerce? (UPSC Prelims 2000)