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761.

A ridger is used for:

A.	Clod crushing	B.	Making channel
C.	Mulching	D.	Seed bed preparation

762.

Heavy draft of a disc harrow is due to:

A.	Blunt disc	B.	Furrow too wide
C.	Loose bearing	D.	All are correct

763.

Macermic cultivator is a:

A.	Bullock drawn	B.	Tractor drawn
C.	Manually operated none of these	D.	None of these

764.

Animal drawn patela is:

A.	Clod crusher	B.	Leveller
C.	Clod crusher	D.	None of these

765.

A stubble type mould board of MB plough gives:

A.	Less pulverization	B.	Medium pulverization
C.	Tharow pulverization	D.	All are correct

766.

Sweeps are used for:

A.	Seedped preparation	B.	Ridging
C.	Earthing plants	D.	Mulching

767.

A mould board of MB plough is made of:

A.	Cast iron	B.	Chilled cast iron
C.	Mild steel	D.	Soft centre steel

768.

A mormal ploughing depth is:

A.	15 cm	B.	30 cm
C.	40 cm	D.	100 cm

769.

A subsoiler is used to break a hard pan of soil upto a depth of:

A.	15 cm	B.	20 cm
C.	30 cm	D.	100 cm

770.

Rotary tillers art used for:

A.	Shallow cultivation and weed control	B.	Deep cultivation and weed control
C.	Both (a) & (b)	D.	None of these