Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A match box exhibits (a) Cubic geometry (b) Monoclinic geometry (c) Orthorhombic geometry (d) tetragonal geometry
09
Feb
A match box exhibits (a) Cubic geometry (b) Monoclinic geometry (c) Orthorhombic geometry (d) tetragonal geometry A match box exhibits (a) Cubic geometry (b) Monoclinic geometry (c) Orthorhombic geometry (d) Tetragonal geometry February 9, 2021 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
The reagent(s) for the following conversion, (a) Alcoholic KOH (b) Alcoholic KOH followed by NaNH2 (c) Aqueous KOH followed by NaNH2 (d) Zn/CH3OH
09
Feb
The reagent(s) for the following conversion, (a) Alcoholic KOH (b) Alcoholic KOH followed by NaNH2 (c) Aqueous KOH followed by NaNH2 (d) Zn/CH3OH (a) Alcoholic KOH (b) Alcoholic KOH followed by NaNH2 (c) Aqueous KOH followed by NaNH2 (d) Zn/CH3OH The reagent(s) for the following conversion February 9, 2021 Category: Uncategorised (JEE Advanced Physics by [...]
When phenyl magnesium bromide reacts with t-butanol, the product would be (a) Benzene (b) Phenol (c) t-butyl benzene (d) t-butyl phenyl ether
09
Feb
When phenyl magnesium bromide reacts with t-butanol, the product would be (a) Benzene (b) Phenol (c) t-butyl benzene (d) t-butyl phenyl ether the product would be (a) Benzene (b) Phenol (c) t-butyl benzene (d) t-butyl phenyl ether When phenyl magnesium bromide reacts with t-butanol February 9, 2021 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
Silicon is found in nature in the form of (a) Body centred cubic structure (b) Hexagonal close – packed structure (c) Network solid (d) Face centred cubic structure
09
Feb
Silicon is found in nature in the form of (a) Body centred cubic structure (b) Hexagonal close – packed structure (c) Network solid (d) Face centred cubic structure Silicon is found in nature in the form of (a) Body centred cubic structure (b) Hexagonal close - packed structure (c) Network solid (d) Face centred cubic [...]
Among the following, the molecule with the highest dipole moment is (a) CH3Cl (b) CH2Cl2 (c) CHCl3 (d) CCl4
09
Feb
Among the following, the molecule with the highest dipole moment is (a) CH3Cl (b) CH2Cl2 (c) CHCl3 (d) CCl4 Among the following the molecule with the highest dipole moment is (a) CH3Cl (b) CH2Cl2 (c) CHCl3 (d) CCl4 February 9, 2021 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
In Na2O having antifluorite structure (a) Oxide ions have a cubic close packed arrangement and Na+ occupy all the eight tetrahedral voids (b) Oxide ions have a cubic close packed arrangement and Na+ occupy all the octahedral voids (c) Na+ ions have a cubic close packed arrangement and O2− occupy all the octahedral voids (d) Na+ ions have a cubic close arrangement and O2− occupy all the tetrahedral voids.
09
Feb
In Na2O having antifluorite structure (a) Oxide ions have a cubic close packed arrangement and Na+ occupy all the eight tetrahedral voids (b) Oxide ions have a cubic close packed arrangement and Na+ occupy all the octahedral voids (c) Na+ ions have a cubic close packed arrangement and O2− occupy all the octahedral voids (d) [...]
If the pressure on NaCl structure is increased , then its coordination number will (a) increase (b) decrease (c) Remain the same (d) Either (b) or (c)
09
Feb
If the pressure on NaCl structure is increased , then its coordination number will (a) increase (b) decrease (c) Remain the same (d) Either (b) or (c) If the pressure on NaCl structure is increased then its coordination number will (a) increase (b) decrease (c) Remain the same (d) Either (b) or (c) February 9, [...]
Which is the incorrect statement? (a) Density decreases in case of crystals with Schottky defect. (b) NaCl(s) is insulator, silicon is semiconductor, silver is conductor. quartz is piezoelectric crystal. (c) Frenkel defect is favoured in those ionic compounds in which sizes of cation and anions are almost equal. (d) FeO0.98 has non-stoichiometric metal deficiency defect
09
Feb
Which is the incorrect statement? (a) Density decreases in case of crystals with Schottky defect. (b) NaCl(s) is insulator, silicon is semiconductor, silver is conductor. quartz is piezoelectric crystal. (c) Frenkel defect is favoured in those ionic compounds in which sizes of cation and anions are almost equal. (d) FeO0.98 has non-stoichiometric metal deficiency defect [...]
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Assertion : The presence of a large number of Schottky defects in NaCl lowers its density . Reason : In NaCl ,
silicon is semiconductor ,
there are approximately 10^6 Schottky pairs per cm^3 at room temperature. ,
Which is the incorrect statement? (a) Density decreases in case of crystals with Schottky defect. (b) NaCl(s) is insulator ,
The pyknometric density of sodium chloride crystal is 2.165 x 10^3 kg/m^3 while its X – rays density is 2.178 x 10^3 kg/m^3. THe fraction of unoccupied sites in sodium chloride crystal is
09
Feb
The pyknometric density of sodium chloride crystal is 2.165 x 10^3 kg/m^3 while its X – rays density is 2.178 x 10^3 kg/m^3. THe fraction of unoccupied sites in sodium chloride crystal is The pyknometric density of sodium chloride crystal is 2.165 x 10^3 kg/m^3 while its X - rays density is 2.178 x 10^3 [...]
Assertion : Anion vacancies in alkali halides are produced by heating the alkali halide crystals with alkali metal vapour. Reason : Electrons trapped in anion vacancies are reffered to as F – centres.
09
Feb
Assertion : Anion vacancies in alkali halides are produced by heating the alkali halide crystals with alkali metal vapour. Reason : Electrons trapped in anion vacancies are reffered to as F – centres. Assertion : Anion vacancies in alkali halides are produced by heating the alkali halide crystals with alkali metal vapour. Reason : Electrons [...]