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Chemical Engineering Basics

Chemical Engineering Basics
While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about __________ °C.

3000
1800
2400
2000

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Chemical Engineering Basics
Load cells used for the measurement of weight has

Provision of thermal compensation and is hermetically sealed
Compact & rugged construction with an accuracy of 0.1 to 1%
All of these
No moving parts and incurs negligible deflection under load

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Chemical Engineering Basics
Oxygen cylinders used for autogenous (cutting/welding) purposes are

Welded steel cylinders
Made by sand casting
Seamless & made of steel
Heat treated before use

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Chemical Engineering Basics
In a casting, cold shut defect is caused by

Melt-mould reactions
Faulty gating system
Low pounhg temperature
Very low mould permeability

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Chemical Engineering Basics
__________ forces do not act in case of fluids.

Centrifugal
Vibratory
Elastic
Tensile

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Chemical Engineering Basics
The ratio of thermal & electrical conductivity is same for all the metals at the same temperature ; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K)

1/T²
T
T²
1/T

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