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31.

Age of Holocene Epoch is about:

A.	11 lakh years	B.	11 billion years
C.	5 million years	D.	18 lakh years

32.

Quarternary Period of Coenozoic Era began:

A.	10 lakh years ago	B.	15 lakh years ago
C.	17 lakh years ago	D.	18 lakh years ago

33.

Span of Pleistocer period was:

A.	4 lakh years	B.	5 lakh years
C.	6 lakh years	D.	7 lakh years

34.

"First Great Revolution" occurred about:

A.	1 billion years ago	B.	2 billion years ago
C.	3 billion years ago	D.	4 billion years ago

35.

"Second Great Revolution" occurred, about:

A.	1.5 billion years ago	B.	2.5 billion years ago
C.	3.5 billion years ago	D.	4.5 billion years ago

36.

Himalaya Andes, Alps etc. evolved during the period:

A.	Tertiary	B.	Cretaceous
C.	Jurassic	D.	Triassic

37.

Oldest fossil belonged to the period:

A.	Cambrian	B.	Ordovician
C.	Silurian	D.	Devonian

38.

Narine metazoa originated in "Second Great Revolution" which occurred 2.5 billion years ago in the Era known As:

A.	Proterozoic	B.	Archaeozoic
C.	Palaeozoic	D.	Mesozoic

39.

Carbonferous period which existed about 34.5 Crore years ago is respobsible for burial of forests leading to formation of:

A.	Chalk	B.	Shale
C.	Coal fields of today	D.	None of these

40.

Land elevation at places formed deep continental seas in the period:

A.	Ordovician	B.	Devonian
C.	Cambrian	D.	Silurian