Compositional analysis of flue gas coming out of a furnace in respect of O2 and

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Question
Compositional analysis of flue gas coming out of a furnace in respect of O₂ and CO₂% can be continuously done by a/an
Options
A. orsat apparatus
B. thermal conductivity cell
C. zirconia probe
D. chromatograph

Correct Answer

thermal conductivity cell

1. Pick out the wrong statement.
Options
A. Denier is defined as weight in gm of 9000 metres length of a fibre, while tex is defined as weight in gm of 1000 metres length of fibre.
B. Crimp is a measure of the difference between the length of the straightened and unstraightend fibre.
C. Dacron fibres, acrylic fibres, viscose rayon fibres & cellulose acetate fibres are all prepared by wet spinning.
D. Nylon fibres have greater water absorption capacity than polyester fibres.

2. A 'rupture disc' is provided in chemical equipments as an accessory meant for
Options
A. relieving excess pressure.
B. creating turbulence.
C. enhancing mixing rate.
D. avoiding vortex formation.

3. The power number for a stirred tank becomes constant at high Reynolds number. In this limit, the variation of power input with impeller rotational speed (N) is proportional to
Options
A. N�
B. N¹
C. N²
D. N³

5. Pick out the wrong statement.
Options
A. Cold SBR is superior as compared to hot SBR.
B. Polymerisation temperature can modify the properties of SBR.
C. Production of cold SBR employs lower pressure as compared to that of hot SBR.
D. None of these.

8. Pick out the wrong statement.
Options
A. Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value.
B. Environmental pollution by NO_x emission is much higher by four stroke petrol engines as compared to the two stroke engines.
C. Temperature in stratosphere rises with increasing altitude.
D. The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere.

9. Chemical engineering plant cost index is used for finding the present cost of a particular chemical plant, if the cost of similar plant at some time in the past is known.
The present cost of the plant = original cost x
The most major component of this cost index is
Options
A. fabricated equipment and machinery.
B. process instruments and control.
C. pumps and compressor.
D. electrical equipments and material.

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