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43.

For measuring temperature in the range of 20 to 600°C, following liquid is used in glass thermometer :

A.	mercury	B.	alcohol
C.	toluene	D.	pentane

44.

For measuring temperature in the range of 200 to 30°C, following liquid is used in glass thermometer:

A.	mercury	B.	alcohol
C.	toluene	D.	pentane

45.

Which of the following glass is used for 00-600°C temperature measurement by mercury-in-glass thermometer :

A.	lead glass	B.	normal grade
C.	borosilicate	D.	supermax

46.

Pick up false statement about liquid-in-metal thermometers :

A.	remote indication of temperature can't be given	B.	error is produced if capillary passes through hot zone
C.	error also occurs if instrument base is at high ambient temperature	D.	error can also creep in by the head of the liquid if the bulb is installed either above or below the Bourdon

47.

Twisting the thermocouple wires together and heat welding them :

A.	is the standard practice of making junction	B.	would result in noise generation
C.	cause small errors due to local e.m.f. which may arise if the junction is too long	D.	would slow down the response

48.

Which of the following thermocouple generates highest e.m.f. for a given temperature :

A.	copper-constantan	B.	iron-constantan
C.	chromel-alumel	D.	platinum-rhodium platinum

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