Solid State Chemistry

ABC26PH1320 · A one-dimensional crystal of lattice dimension 'a' is metallic. If the structure is distorted in such a way that the lattice dimension is… · JUNE 2011

ABC26PH0183 · Consider a n-type semiconductor whose Ev=0, EC=2.0eV and ED-1.98eV. The correct statement among the following is · 2011

ABC26PH1322 · Consider a n-type semiconductor whose EV = 0, EC = 2.0 eV and ED = 1.98 eV. The correct statement among the following is · DEC 2011

ABC26PH0186 · The wavelength and the spectral region for a single electron transfer across the band gap in a semi conductor (Ex-1.98 × 10-19) are… · 2012

ABC26PH1326 · The wavelength and the spectral region for a single electron transfer across the band gap in a semi-conductor (Ex=1.98 × 10-19) are… · JUNE 2012

ABC26PH0187 · When Si is doped with a Group V element · JUNE 2014

ABC26PH1340 · When Si is doped with a Group V element · JUNE 2014

ABC26PH1329 · The packing fraction of a simple cubic lattice is close to · DEC 2012

ABC26PH0185 · The lattice parameter of an element stabilized in a fcc structure is 4.04 Å. The atomic radius of the element is: · 2012

ABC26PH1325 · The lattice parameter of an element stabilized in a fcc structure is 4.04 Å. The atomic radius of the element is: · JUNE 2012

ABC26PH1328 · A metal crystallizes in fcc structure with a unit cell side of 500 pm. If the density of the crystal is 1.33 g/cc, the molar mass of the… · DEC 2012

ABC26PH1330 · Crystal A diffracts from (111) and (200) planes but not from (110) plane, while the crystal B diffracts from (110) and (200) planes but not… · DEC 2012

ABC26PH1331 · The coordinates for the atoms in a body centred cubic unit cell are · JUNE 2013

ABC26PH1332 · The inter planar distance (Å) for a (100) plane in a cubic structure with the lattice parameter of 4 Å is: · JUNE 2013

ABC26PH1335 · A compound of M and X atoms has a cubic unit cell. M atoms are at the corners and body centre position and X atoms are at face centre… · DEC 2013

ABC26PH1336 · The angle at which the first order Bragg reflection is observed from (110) plane in a simple cubic unit cell of side 3.238 Å, when chromium… · DEC 2013

ABC26PH1338 · An element exists in two crystallographic - modifications with FCC and BCC structures. The ratio of the densities of the FCC and BCC… · DEC 2013

ABC26PH1339 · Metallic gold crystallizes in fcc structure with unit cell dimension of 4.00 Å. The atomic radius of gold is · DEC 2013

ABC26PH0188 · The interplanar spacing of (110) planes in a cubic unit cell with lattice parameter a = 4.242 Å is · JUNE 2014

ABC26PH1341 · The interplanar spacing of (110) planes in a cubic unit cell with lattice parameter a = 4.242 Å is · JUNE 2014

ABC26PH0189 · For a simple cubic crystal lattice, the angle between the [201] plane and the xy plane is · DEC 2015

ABC26PH1346 · For a simple cubic crystal lattice, the angle between the [2 0 1] plane and the xy plane is · DEC 2015

ABC26PH1352 · Metallic silver crystallizes in face-centred-cubic lattice structure with a unit cell of length 40 nm. The first order diffraction angle of… · JUNE 2017

ABC26PH1353 · Polonium is the only metal known to exist in a simple cubic lattice form. The density of polonium at 0°C is measured to be 10.00 g/cm3. The… · JUNE 2017

ABC26PH1355 · The separation of the (123) planes of an orthorhombic unit cell is 3.12 nm. The separation of (246) and (369) planes are, respectively, · DEC 2017

ABC26PH1356 · If all the lattice points of an FCC structure are occupied by uniform hard spheres that touch each other, the fraction of volume occupied is · JUNE 2018

ABC26PH1358 · In a cubic crystal, the (111) and (222) reflections are observed, but not the (001) reflection. The Bravais lattice is · DEC 2018

ABC26PH1359 · A metal crystallizes with cubic close-packed structure. The sin 2 theta values of Bragg reflections of Miller Planes (200) and (111) are… · DEC 2018

ABC26PH0190 · The correct relationship among the following, for a tetragonal (a = b ≠ c, alpha = beta = gamma = 90°) crystal system, is · 2019

ABC26PH1360 · The correct relationship among the following, for a tetragonal (a=b ≠ c, alpha = beta = gamma =90°) crystal system, is · JUNE 2019

ABC26PH1361 · Nearest neighbour distance in a crystal system of side length a is a/(√(2)) in · JUNE 2019

ABC26PH1363 · X-rays of 173 pm wavelength are reflected by the (111) plane of a cubic primitive crystal at theta = 30°. The unit cell length (in pm) is… · DEC 2019

ABC26PH1364 · Iron belongs to the BCC lattice. The Miller indices of the second allowed reflection in the powder diffraction pattern of iron would be · DEC 2019

ABC26PH1365 · In the ccp packing, the number of lattice points per unit area in the planes is in the order · DEC 2019

ABC26PH1366 · Plutonium (atomic mass = 244 g mol-1) crystallizes in monoclinic lattice (a = 620 pm, b = 480 pm, c = 1100 pm; beta = 102°) with 16 atoms… · JUNE 2021

ABC26PH1334 · When Frenkel defects are created in an otherwise perfect ionic crystal, the density of the ionic crystal · DEC 2013

ABC26PH1321 · The value of d111 in a cubic crystal is 325.6 pm. The value of d333 is · DEC 2011

ABC26PH1323 · How many atoms are there in an element packed in a fcc structure · JUNE 2012

ABC26PH0184 · The structure obtained when all the tetrahedral holes are occupied in a fee structure is of the type · 2012

ABC26PH1342 · A compound AxBy has a cubic structure with A atoms occupying all the corners of the cube as well as all the face center positions. The B… · JUNE 2014

ABC26PH1344 · A solid consisting of only X-atoms has a close-packed structure with X-X distance of 160 pm. Assuming it to be a closed packed structure of… · DEC 2014

ABC26PH1348 · In a cubic crystal, the plane [100] is equally inclined to the planes · JUNE 2016

ABC26PH1350 · Each void in a two dimensional hexagonal close-packed layer of circles is surrounded by · DEC 2016

ABC26PH1362 · The Miller index for the plane as shown in the figure and parallel to the c-axis, is · DEC 2019

ABC26PH0191 · Consider a n-type semiconductor whose EV=0, EC=2.0 eV and ED=1.98 eV. The correct statement among the following is · 2011 self-practice

ABC26PH0517 · The incorrect statement for solid sodium chloride is that · 2005-2021

ABC26PH0803 · Monochromatic X-rays having energy 2.8 × 10-15 J diffracted (first order) from (200) plane of a cubic crystal at an angle 8.5°. The length… · 2001-2022 self-practice

ABC26PH0518 · The atomic radius (in cm) of an element with a body centered cubic unit cell of volume 75.8 cm3 mol-1, molecular weight 137.3 and density… · 2005-2021

ABC26PH0804 · Calcium crystallizes in fcc lattice of unit cell length 5.56 Å and density 1.4848 g cm-3. The percentage of Schottky defects (rounded off… · 2001-2022 self-practice

ABC26PH0519 · The arrangement of sulphur in zinc blende and wurtzite structures, respectively, are · 2005-2021