KCET 2022 | Solid State Question 10 | Chemistry

In chrysoberyl, a compound containing beryllium, aluminium and oxygen, oxide ions form cubic close packed structure. Aluminium ions occupy $$\frac{1}{4}$$th of octahedral voids. The formula of the compound is

$$\mathrm{BeAlO}_4$$

$$\mathrm{BeAl}_2 \mathrm{O}_4$$

$$\mathrm{Be}_2 \mathrm{AlO}_2$$

$$\mathrm{BeAlO}_2$$

KCET 2021

MCQ (Single Correct Answer)

-0

The correct statement regarding defects in solid is

Frenkel defect is a vacancy defect

Schottky defect is a dislocation defect

Trapping of an electron in the lattice leads to the formation of F-centre

Schottky defect has no effect on density

KCET 2021

MCQ (Single Correct Answer)

-0

A metal crystallises in bcc lattice with unit cell edge length of $$300 \mathrm{~pm}$$ and density $$615 \mathrm{~g~cm}^{-3}$$. The molar mass of the metal is

$$50 \mathrm{~g~mol}^{-1}$$

$$60 \mathrm{~g~mol}^{-1}$$

$$40 \mathrm{~g~mol}^{-1}$$

$$70 \mathrm{~g~mol}^{-1}$$

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Some Basic Concepts of Chemistry Atomic Structure States of Matter Thermodynamics Chemical Equilibrium Ionic Equilibrium Liquid Solution Redox Reactions Surface Chemistry Solid State Electrochemistry Chemical Kinetics Nuclear Chemistry

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