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29.	A characteristic odour of garlic is due to
	A.  Acetic acid
	B.  A sulphur compound
	C.  A fluorine compound
	D.  A Chloro compound

Answer

Ans: B A sulphur compound

30.	Which of the following leguminous plant is also a petro plant?
	A.  Pea
	B.  Gram
	C.  Pigeon pea
	D.  Pongamia

Answer

Ans: D Pongamia

31.	Which one of the following is not an essential micronutrient for plants?
	A.  Boron
	B.  Zinc
	C.  Copper
	D.  Sodium

Answer

Ans: D Sodium

32.	Photosynthesis using the invisible part of the sunlight is done by
	A.  Fungi
	B.  Bacteria
	C.  Trees
	D.  Algae

Answer

Ans: B Bacteria