Related Questions

In what ratio should a 20% methyl alcohol solution be mixed with a 50% methyl alcohol solution so that the resultant solution has 40% methyl alcohol in it?
A 1 : 2
B 2 : 1
C 1 : 3
D 3 : 1
Solvent deoiling process is used for separating oil and soft wax from hard wax. Methyl iso-butyl ketone and methyl ethyl ketone (MEK) are two commonly used deoiling solvents. Use of former as the deoiling solvent has the advantages of the
A Elimination of solvent drying facility
B Higher nitration temperature
C Lower solvent dilution ratio
D All of the above
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is
A 770°C
B 910°C
C 1050°C
D Below recrystallization temperature
Which of the following additives improves the cetane number of diesel?
A Amyl nitrate
B Ethyl mercaptan
C Napthenic acid
D Tetra ethyl lead
Which of the following is an additive used for improving the cetane number of diesel?
A Tetraethyl lead
B Tetramethyllead
C Ethyl nitrate or acetone
D None of these
The cetane number of diesel oil, generally available, is
A 20 to 25
B 25 to 30
C 30 to 40
D 40 to 55
The cetane number of a Diesel fuel is a measure of
A Volatility
B Viscosity
C Ignition quality
D Delay period
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
Cetane number of diesel used in trucks may be about
A 50
B 14
C 35
D 85
Diesel used in naval applications has a minimum cetane number of
A 25
B 35
C 45
D 65

Next steps