Related Questions

Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute).
A 5-10
B 30-80
C 150-250
D 350-400
একটি HCl দ্রবনের ঘনত্ব 1.20 গ্রাম/মি.লি। এই দ্রবণে 35%(W/W) HCl এসিড আছে।500 মি.লি. দ্রবণে কি পরিমাল বিশুদ্ধ HCl আছে?
A 210gm
B 220mg
C 120gm
D 200gm
পরীক্ষাগারে Na2CO3 কে HCl দ্বারা ট্রািইটেশন করতে মিথাইল -অরেঞ্জ নির্দেশক ব্যবহৃত হয়। যদি Na2CO3 এর ঘনমাত্রা 0.125M এবং এর 10ml কে ট্রাইটেমন করতে 16ml HCl প্রয়োজন হয়, তাহলে HCl এর ঘনমাত্রা কত হবে?
A 1.53 M
B 1.35 M
C 0.156 M
D 1.256 M
The import of crude oil and petroleum done from national oil companies of producer countries, which have a net exportable surplus of oil is by
A term contracts
B term tenders
C monthly tenders
D All the above
The most common process of separating the many compounds present in crude petroleum is by-
A Distillation
B Synthesis
C Fermentation
D Galvanization
Sour crude means the __________ bearing crude.
A Asphalt
B Sulphur compounds
C Wax
D Nitrogen compounds
Crude oils containing more than __________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a 'salty crude'.
A 1
B 5
C 15
D 25
__________ base crude oil is also called asphaltic crude.
A Paraffinic
B Naphthenic
C Mixed
D Aromatic
During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to
A Increase the rate of absorption
B Avoid corrosion
C Reduce the cooling water circulation rate
D None of these
Salt content (measured as sodium chloride) in electrically desalted crude oil comes down to a level of about __________ ptb (pounds per thousand barrel).
A 0.03
B 3
C 35
D 70

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