D:-alkylation
Correct Answer:- Option-B

Question74:-One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed
by carbonation of the resulting solution. The purpose of this step is to

A:-adjust the pH of the syrup
-remove the colouring matter from the syrup
-reduce the viscosity of the syrup
D:-improve the rate of crystallization of sugar
Correct Answer:- Option-A
Question75:-Which of the following fine dust removal equipment is the most efficient ?
A:-bag filter
scrubber
C:-electrostatic precipitator
D:-cyclone separator
Correct Answer:- Option-C
Question76:-The biological decomposition of organic substances in waste controlled conditions is called
A:-incineration
-biological oxidation
C:-composting
D:-none of these
Correct Answer:- Option-C
Question77:-The resistance of water to the passage of light through it is measure of the
A:-turbidity

C:-hardness
D:-dissolved gases
Correct Answer:- Option-A
Question78:-In a shell and tube heat exchanger, the 'tube pitch’ is defined as the
A:-0.D. of the tube for square pitch
B:-shortest distance between two adjacent tube holes
C:-shortest centre to centre distance between adjacent tubes
D:-none of these
Correct Answer:- Option-C
Question79:-Spherical shaped pressure vessel is considered to be the most ideal, because
A:-withstand higher pressure
-fabrication very easy
C:-designed without wind load considerations
D:-supported very easily
Correct Answer:- Option-A
Question80:-Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than
A:-5 mm
B:-10 mm
C:-20 mm
D:-30 mm
Correct Answer:- Option-D
Question81:-For the same compression ratio and heat input which cycle has maximum thermal efficiency ?
A:-Diesel cycle
B:-Otto cycle
C:-Dual cycle
D:-None of these
Correct Answer:- Option-B
Question82:-A circular disc rolls on the inside surface of a base circle. The radius of the circular disc is equal to half the
radious of the base circle. The locus of a point on the circumference of the disc is
A:-Straight line
B:-Epicycloid
C:-Hypocycloid
D:-Involute
Correct Answer:- Option-A

Question83:-When a belt is stationary, it is subjected to some tension known as initial tension. The value of this tension is
equal to the