Related Questions

Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ?
A Methane
B Ethane
C Propane
D Butane
Liquefied petroleum Gas (LPG) used for the household cooking comprises mainly of
A Propane & butane
B Butane & ethane
C Methane & ethane
D Methane & carbon monoxide
Liquefied Petroleum Gas (LPG) is mainly a mixture of
A Propane & butane
B Methane & ethane
C High boiling olefins
D High boiling naphthenes
Liquefied Petroleum Gas (LPG) তে থাকে-
A মিথেন, পানি ও ইথেন
B মিথেন, বিউটেন ও প্রোপেন
C মিথেন, ইথেন ও বিউটেন
D মিথেন, ইথেন ও জেনন
Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to
A Protect rubber goods from attack by oxygen & ozone present in the atmosphere
B Reduce its viscosity to permit easier processing
C Reduce the time of vulcanisation and quantity of vulcanising agent
D Increase its viscosity
Mercaptans is represented as (where R and R' are alkyl groups)
A R-COOH
B R-S-H
C R-S-R
D R-S-R'
Mercaptans are
A Low boiling sulphur compounds
B Added in LPG cylinders to detect gas leakage by its smell
C Undesirable in petrol, as they reduce its octane number
D All of the above
Solution used in Doctor's treatment for the removal of mercaptans is
A Sodium hydroxide
B Sodium plumbite
C Cupric chloride
D Potassium isobutyrate
If a gas is to be liquefied, its temperature must be
A Increased to a value above its critical temperature
B Reduced to a value below its critical temperature
C Equal to critical temperature
D None of the above
L.P.G. is mostly liquefied
A Hydrogen
B Oxygen
C Butane
D Methane

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