Related Questions

There are one octahedral void and __________ tetrahedral void in the closest packing of atoms.
A One
B Two
C Three
D None of these
In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.
A $${\frac{1}{5}^{{\text{th}}}}$$
B $${\frac{1}{{15}}^{{\text{th}}}}$$
C $${\frac{1}{{30}}^{{\text{th}}}}$$
D $${\frac{1}{{50}}^{{\text{th}}}}$$
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.
A Greater than
B Smaller than
C Equal to
D Either A, or B ; depends on the type of packing
Stacked packing compared to dumped packing
A Provides poorer contact between the fluids
B Gives lower pressure drop
C Both A & B
D Gives higher pressure drop
Out of the following, the lowest packing of atoms exists in __________ crystal lattice structure.
A Hexagonal close, packed (hcp)
B Face centred cubic (fcc)
C Body centred cubic (bcc)
D Simple cubic
The defect which takes place due to imperfect packing of atoms during crystallization is known as
A Line defect
B Surface defect
C Point defect
D None of these
The word bounty is closest is closest in meaning to--
A generosity
B familiar
C dividing line
D sympathy
টেট্রাহেড্রাল (Tetrahedral Theory) মতবাদ প্রদান করেন-
A মোহরোভিসিক
B সি.এফ. রিকটার
C লোথিয়ান গ্রীন
D নিউটন
When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as
A Isomers
B Isotopes
C Isobars
D Isotones
Most important factor to be considered in the selection of packings for absorbers is the __________ of packing.
A Size
B Durability
C Porosity
D Cost

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