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1391.

The recommended high temperature limit for seed grains is:

A.	65?C	B.	70?C
C.	80?C	D.	85?C

1392.

A critical moisture content varies with:

A.	Rate of drying	B.	Thickness of material
C.	Both (a) and (b)	D.	None of these

1393.

Area required to dry one tonne of grain in the sun is about:

A.	8 sq. m	B.	10 sq. m
C.	15 sq. m	D.	20 sq. m

1394.

In sun drying, the relative humidity (per day) of grain under favourable conditions is reduced by:

A.	1-2%	B.	3-4%
C.	5-6%	D.	7-8%

1395.

Sun radiation temperature corresponding to black body temperature is at about:

A.	3000 K more	B.	5000 K more
C.	6000 K more	D.	7000 K more

1396.

In freeze-drying, the liquid phase comes at the pressure above:

A.	1.7 mm	B.	2.7 mm
C.	3.7 mm	D.	4.7 mm

1397.

In conventional freeze drying, dehydration temperature are kept between:

A.	10?C-30?C	B.	30.2?C-65.5?C
C.	35.5?C-75?C	D.	37.8?C-93.3?C

1398.

In attrition mill, the size of food grains is reduced due to:

A.	Impact and shear	B.	Shear and crushing
C.	Impact and crushing	D.	Impact only

1399.

In ball mill, the size of food grains is reduced due to:

A.	Crushing	B.	Shearing
C.	Impact	D.	All are correct

1400.

Standard screens are used and measurement of the particle size range between:

A.	70 mm and 30 micro metre	B.	76 mm and 38 micro metre
C.	78 mm and 38 micro metre	D.	80 mm and 40 micro metre