Description : 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
Last Answer : (D) Simple cubic
Description : Mild steel has __________ crystal lattice structure. (A) Face centred cubic (fcc) (B) Body centred cubic (bcc) (C) Orthorhombic (D) Cubic
Last Answer : (B) Body centred cubic (bcc)
Description : Pick out the wrong statement. (A) Metal/alloys having hexagonal crystal lattice structure are less malleable than those having cubic crystal lattice structure (B) Metal/alloys having body centred cubic ... D) Both ferritic & austenitic stainless steel has a face centred cubic (fcc) crystal structure
Last Answer : (C) Tungsten has a body centred cubic (bcc) crystal lattice structure
Description : Nickel as a material of construction (A) Is used as an alloying element for both ferrous & non-ferrous alloys (B) Is paramagnetic below 415° C (its Curie temperature) (C) Diamagnetic (D) Has a body centred cubic (bcc) crystal lattice structure
Last Answer : (A) Is used as an alloying element for both ferrous & non-ferrous alloys
Description : Which of the following crystal structures characterises the austenitic stainless steel? (A) Simple hexagonal (B) Body centred cubic (C) Face centred cubic (D) None of these
Last Answer : (C) Face centred cubic
Description : Which of the following crystal structures characterises the ferritic stainless steel? (A) Face centred cubic (B) Body centred cubic (C) Simple hexagonal (D) None of these
Last Answer : (B) Body centred cubic
Description : How many molecules per unit cell are there in a face centred cubic lattice? (A) 2 (B) 4 (C) 6 (D) 8
Last Answer : (B) 4
Description : How many atoms are there per unit cell in a body centred cubic lattice system? (A) 6 (B) 5 (C) 3 (D) 2
Last Answer : (D) 2
Description : Cubic crystals containing lattice points only at the corners are called: w) body centered x) face centered y) simple z) hexagonal
Last Answer : ANSWER: C-SIMPLE
Description : How many number of molecules per unit cell which crystallizes in the form of end face centred (monoclinic) lattice with a molecule at each lattice.
Last Answer : 2.
Description : The ratio of spacing (d) for for simple cubic lattice, d(100) :d(110) :d(111) a. 1 : 0.707: 0.669 b. 1: 1.414: 0.577 c. 1: 0.707 : 0.577 d. 1: 0.707 : 1.154
Last Answer : c. 1: 0.707 : 0.577
Description : Materials having __________ lattice structure are usually most ductile. (A) FCC (B) BCC (C) HCP (D) Cubic
Last Answer : (A) FCC
Description : (1) they contain free electrons Explanation: Metals typically consist of closepacked atoms, meaning that the atoms are arranged like closely packed spheres. Two packing motifs are common, one ... surrounded by six neighboring atoms. Several metals adopt both structures, depending on the temperature.
Last Answer : Helium gas is filled in ballons because (1) its atomic number is 2 (2) it is lighter than air (3) it is one of the constitutents of water (4) it is a noble gas
Description : Pure nickel is (A) Ferromagnetic above its curie point (i.e., 415°C) (B) Having h.c.p. crystal lattice (C) Ferromagnetic at room temperature (D) Not resistant to oxidation at high temperature
Last Answer : (C) Ferromagnetic at room temperature
Description : How many atoms per unit cell are in a face-centered-cubic crystal? w) two x) four y) six z) eight
Last Answer : ANSWER: X -- FOUR
Description : Most of the common metals have __________ crystal structure. (A) Cubic (B) Hexagonal (C) Orthorhombic (D) None of these
Last Answer : (A) Cubic
Description : The crystal of diamond shines due to (a) High density (b) Total internal reflection (c) Crystal lattice (d) None of these
Last Answer : Ans:(b)
Description : A smallest three dimensional part of a crystal lattice is called. a) A particle b) A molecules c) A unit cell d) An atom
Last Answer : c) A unit cell
Description : Which class of solids could have London Forces the attractive forces between particles in crystal lattice positions? w) ionic x) covalent y) metallic z) molecular
Last Answer : ANSWER: Z -- MOLECULAR
Description : The type of crystal lattice exemplified in a diamo is: w) ionic crystal x) covalent network crystal y) metallic crystal z) covalent molecular crystal
Last Answer : ANSWER: X -- COVALENT NETWORK CRYSTAL
Description : The crystal structure of most of the common metals is (A) Orthorhombic (B) Cubic (C) Hexagonal (D) None of these
Last Answer : (B) Cubic
Description : How does relational-centred planning differ from traditional models of case planning please help im working as a cyc worker for child and youth care and need help?
Last Answer : Need answer
Description : There are ....... lines of symmetry in cubic crystal. a. 3 b. 13 c. 9 d. 6
Last Answer : b. 13
Description : If cats and humans exchange scents as expressions of closeness, how do cats feel when humans wash behind their ears with tears?
Last Answer : answer:Emotional tears do contain a very low-key chemical messenger to which human males are sensitive. A recent study found that the scent of a woman's emotional tears (which have a different chemical ... that cats would have evolved to respond to the scent of human tears in any particular way.
Description : What is the relationship between the closeness of your relationship and the need for frequent communication?
Last Answer : …from Dr. Fluther ? ~30s
Description : In Low Level Language, the term low level means: a) The quality is so low that large program can not be write b) To learn and even more difficult to write program c) Closeness to the way in which machine understand d) None of These
Last Answer : c) Closeness to the way in which machine understand
Description : What is indicated by the number of arrows (closeness of spacing) used to represent an electric field?
Last Answer : The relative strength of the field.
Description : In which of the following case a large lattice is formed? A.Antibody is in excess B.Antigens and antibodies are in optimal proportion C.Antigen is in excess D.None of these
Last Answer : B.Antigens and antibodies are in optimal proportion
Description : C and Si both have same lattice structure, having 4 bonding electrons in each. However, C is insulator where as Si is intrinsic semiconductor. This is because (1) The four bonding electrons in the case of C ... the case of C lie in the second orbit, whereas in the case of Si they lie in the third
Last Answer : (4) The four bonding electrons in the case of C lie in the second orbit, whereas in the case of Si they lie in the third
Description : The co-ordination number in simple cubic structure is (A) 4 (B) 6 (C) 8 (D) 12
Last Answer : (B) 6
Description : The most common packing used in industrial operations is __________ rings. (A) Raschig (B) Lessing (C) Cross-partition (D) Single spiral
Last Answer : (C) Cross-partition
Description : 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
Last Answer : (C) Porosity
Description : In an absorption column, 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
Last Answer : (B) Smaller than
Description : The size of the tetrahedral void in the closest packing of atoms is __________ that of the octahedral void. (A) Equal to (B) Greater than (C) Less than (D) Either (A), (B) or (C); depends on the size of atom
Last Answer : (C) Less than
Description : There are one octahedral void and __________ tetrahedral void in the closest packing of atoms. (A) One (B) Two (C) Three (D) None of these
Last Answer : Option B
Description : If edge length of an unit cell `=4xx10^(-8)` cm and the unit cell is a face-centered cubic with atomic mass of metal is 40 then density of the unit ce
Last Answer : If edge length of an unit cell `=4xx10^(-8)` cm and the unit cell is a face-centered cubic with atomic mass of ... /(24) `gm/ml D. `(1)/(4)` gm/litre
Description : The extremely self centred nature of man has proven himself capable of more destruction than mother nature herself. What do you think?
Last Answer : No sayings are ever completely accurate. Humans can’t do the same amount of damage that a hurricane or earthquake could do in the same amount of time. But, the humans do intentionally do damage, while natural events don’t.
Description : Three centred two electron bond is present in
Last Answer : Three centred two electron bond is present in A. `NH_(3)` B. `B_(2)H_(6)` C. `BCl_(3)` D. `AlCl_(3)`
Description : What are the differences between Transactional Analysis and person centred therapy?
Description : In 321 BC Chandragupta founded the Mauryan Empire, which was centred in modern in Pakistan but had its capital far to the east at: A. Asaam B. Calcutta C. Delhi D. Patna
Last Answer : ANSWER: D
Description : A pointed arch which forms isosceles or equilateral triangle, is generally known as (A) Three centred arch (B) Two centred arch (C) Lancet arch (D) Bull's eye arch
Last Answer : Answer: Option C
Description : Crusades were centred around in………… (a) Rome (b) Saudi Arabia (c) Jerusalem (d) Palestine
Last Answer : (c) Jerusalem
Description : Which of the following is/are true about teacher/teaching? Options: A) teacher Should Have Control Over The Students To Maintain Peace And Order In The Class. B) Teaching Should Be Pupil Centred ... Subject Centred. C) Teacher Should Arouse Interest Among Students About The Subject D) All Of These
Last Answer : D) All Of These
Description : Modern Indian education at the Elementary school level can best be described as being Options: A) Curriculum-centred B) Project-centred C) Pupil-centred D) Subject-centred
Last Answer : C) Pupil-centred
Description : Consider a unit square centred at origin. The coordinates of the square are translated by a factor (1/2, 1) and rotated by an angle of 90o . What shall be the coordinates of the new square ? (A) (-1/2, 0), (-1/2, 1), (-3/2, 1), (-3/2, ... , 1), (-3/2, 0) (D) (-1/2, 0), (1/2, 1), (-3/2, 1), (-3/2, 0)
Last Answer : (A) (-1/2, 0), (-1/2, 1), (-3/2, 1), (-3/2, 0)
Description : The co-ordination number of a simple cubic structure is
Last Answer : The co-ordination number of a simple cubic structure is 6.
Description : When the distance between centers of two adjacent rivets connecting the members subjected to either compression or tension exceeds the maximum pitch, then the additional rivets which are not subjected to the ... (a) Packing rivets (b) Long-grip rivets (c) Tacking rivets (d) Auxiliary rivets
Last Answer : (c) Tacking rivets
Description : The partial pressure distribution of an ideal gas diffusing through another stagnant ideal gas at steady state follows a/an __________ law. (A) Exponential (B) Parabolic (C) Linear (D) Cubic
Last Answer : (A) Exponential
Description : __________ is added in stainless steel to prevent inter crystal corrosion. (A) Vanadium (B) Niobium (C) Chromium (D) Nickel
Last Answer : (B) Niobium