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1231.

The gas holder used in floating gas type biogas plant is:

A.	Conical	B.	Spherical
C.	Inverted drum	D.	All are correct

1232.

The KVIC biogas is:

A.	Fixed type	B.	Floating
C.	Both (a) & (b)	D.	None of these

1233.

In fixed dome type biogas plant, the gas holder is made of:

A.	Metal	B.	Cement and bricks
C.	Wooden	D.	Stone

1234.

In floating type biogas plant, gas holder is made of:

A.	Metal	B.	Wood
C.	Cement and bricks	D.	All are correct

1235.

Which of the biogas plant has digester tank and gasholder as combined unit?

A.	Floating dome type	B.	Fixed dome type
C.	Both (a) & (b)	D.	None of these

1236.

A high gas production achieved from biogas plant when inside temperature of the chamber is:

A.	15?C	B.	10?C
C.	35?C	D.	50?C

1237.

Insulated metal of solar cooker is:

A.	Black from outside	B.	Black from inside
C.	Black from out and inside	D.	White from out and inside

1238.

The temperature inside the solar cooker ranges from:

A.	40-80?C	B.	50-100?C
C.	100-140?C	D.	110-180?C

1239.

A mirror used to reflect sublight in box type solar cooker is:

A.	Convex	B.	Concave
C.	Plane	D.	All are correct

1240.

In solar furnace temperature can be raised upto:

A.	1000?C	B.	20000?C
C.	3000?C	D.	4000?C