Related Questions

Washability curve based on float and sink test enables an assessment to be made of the possibility of cleaning a coal fraction based on the
A Density separation
B Differential wettability
C Size
D Volatile matter content
Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.
A 1000
B 4000
C 6000
D 8000
In a group of 15 high school students, 7 study Latin, 8 study French and 3 study neither Latin nor French. How many students study both Latin and French?
A 3
B 4
C 6
In a group of 15 high school students, 7 study Latin, 8 study French, and 3 study neither Latin nor French. How many students study both Latin and French?
A 3
B 15
C 4
In group of 15 high school students, 7 study Latin, 8 study French and 3 study neither Latin nor French. How many students study both Latin and French?
A 3
B 15
C 4
A,B,C,D,E,G and I are seven friends who study in three different standards namely 5th, 6th and 7th such that not less than two friends study in the same standard. Each friend also has a different favorite subject namely History, Civics, English, Bangla, Science , Maths , and Economics but not necessarily in the same order. A likes Maths and studies in the 5th standard with only one other friend who likes Bangla. I studies with tow other friends . Both the friends who study with I like languages (Here languages include only Science , English and Bangla ) . D studies in the 6th standard with only one person and does not like Civics . E studies with only one friend . The one who likes history does not study in 5th or 6th standard . E does not like languages. C does not like English , Science or Civics. Which combination represents E's favorite subject and the standard in which he studies?
A Civics and 7th
B Economics and 5th
C Civics and 6th
D History and 7th
Commercial production of petrol from coal (as practised in a factory at Sasol in South Africa) is done by the __________ of coal.
A Hydrogenation
B Gasification
C Carbonisation
D None of these
Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an __________ bed gasifier.
A Entrained
B Moving
C Fixed
D Fluidised
__________ of the coal is the basis for Seylor's coal classification.
A Proximate analysis
B Ultimate analysis
C Caking index
D Calorific value
A coal containing very high percentage of durain is called __________ coal.
A Bright
B Splint
C Non-banded
D Boghead

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