A. Chromatography
B. Evaporation
C. Filtration
D. Fractional distillation
Related Mcqs:
- Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area; in the casting) ?
A. V/A
B. V/A2
C. V2/A
D. V2/A2 - Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner ?
A. Output & fineness
B. Velocity
C. Both A. & B.
D. None of these - The starting of a car takes time in winter, because the__________________?
A. Octane number of fuel is decreased
B. Fuel supply for ignition is not sufficient
C. Vaporisation of the fuel is decreased
D. Pour point of fuel decreases - Alcohols are not suitable as diesel engine fuel because the cetane number of alcohols is____________________?
A. Very low which prevents their ignition by compression
B. Very high which prevents their ignition by compression
C. Zero
D. None of these - Which of the, following is not associated with the functioning of a petrol engine ?
A. Compression ignition system
B. Spark plug
C. Carburettor
D. Otto cycle - Thermal efficiency of an internal combustion engine is around ______________ percent?
A. 8
B. 35
C. 65
D. 80 - A jet engine turbine blade is normally manufactured by____________________?
A. Forging
B. Shell moulding
C. Investment casting
D. Pressure die casting - Which of the following performance characteristics of a S.I engine is not affected by the front end volatility of the petrol used ?
A. Vapour locking
B. Hot starting
C. Spark plug fouling
D. All A, B & C - Air-petrol ratio in an automotive petrol engine is around ________________?
A. 14 : 1
B. 22 : 1
C. 25 : 1
D. 4 : 1 - The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1 – T2)/T1. The co-efficient of performance (CO.P.) of a Carnot heat pump operating between T1 and T2 is given by_________________?
A. T1/(T1-T2)
B. T2/(T1-T2)
C. T1/T2
D. T2/T1
