Related Questions

Activators are those chemicals which help buoying up one mineral in preference to the other in the froth floatation process. Which of the following is an activator?
A Cresylic acid
B Copper sulphate
C Calcium carbonate
D Sodium carbonate
Which one of the following mineral does not contain oxygen ?
A Haematite
B Bauxite
C Cryolite
D Calcite
Which one of the following was the first mineral acid discovered?
A Sulphuric acid
B Hydrochloric acid
C Nitric acid
D Phosphoric acid
Which of the following is not one of the by-products of mineral oil?
A Naphtha
B Sulphur
C Aniline dyes
D Paraffin wax
Crushing of mineral particles is accomplished in a 'cage mill', when one or more alloy steel bars are revolved in opposite directions. It is a type of __________ mill.
A Impact
B Roll
C Vibratory
D None of these
The forms in which various metals and non metals occur in nature are called minerals. Which of the following is not a metallic ferrous mineral?
A Cassiterite
B Sphalerite
C Chalcopyrite
D Calcite
Which of the following mineral resources is the most important for Bangladesh :
A Oil
B Gold
C Hard Rock
D Gas
Which of the following is a non-metallic mineral?
A Bauxite
B Magnesium
C Gypsum
D Manganese
The water and mineral salts are transported to the various organs by which of the following?
A Xylem
B Phloem
C Cortex
D Cambium
Which of the following is a mineral?
A Basalt
B Granite
C Quartz
D Syenite

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