Popular Questions
- Write short notes on monoclinic and triclinic crystal system. Give examples
- Differentiate between Tetragonal and Trigonal crystal system
- What is a unit cell What are the parameters of a unit cell? What do you mean by simple cubic unit cells?
- What do you mean by body-centered cubic unit cell? Calculate its Packing efficiency.
- How many atoms are present in one face-centered cubic unit cell? Calculate the percentage empty space in a unit cell.
- Write short notes on
- What do you mean by F-centres?
- KCI crystal heated in an atmosphere of potassium vapors appear violet, why?
- Describe the n-type and p-type semiconductors.
- What is craft temperature? Write about ferromagnetism.
- A cubic solid is made of two elements P and Q. Atoms of Qare at the corners of the cube and Pat the body-center. What is the form..
- Which of the following conditions favors the existence of a substance in the solid state?
- Which of the following is not a characteristic of a crystalline solid?
- Which of the following is true about the value of refractive index of quartz glass?
- Which of the following statement is not true about amorphous solids?
- The sharp melting point of crystalline solids is due to
- Iodine molecules are held in the crystals lattice by
- Which of the following is not the characteristic of ionic solids?
- Graphite is a good conductor of electricity due to the presence of
- The lattice site in a pure crystal cannot be occupied by
- Graphite cannot be classified as
- Cations are present in the interstitial sites in
- Schottky defect is observed in crystals when
- Which of the following is true about the charge acquired by p-type semiconductors?
- To get an-type semiconductor from silicon, it should be doped with a substance with valence.
- The total number of tetrahedral voids in the face-centered unit cells is
- Which of the following point defects are shown by AgBr(s) crystals?
- In which pair most efficient packing is present?
- The percentage of empty space in a body centered cubic arrangement is
- Which of the following statement is not true about the hexagonal close packing?
- What is the coordination number in a square close-packed structure in two dimensions?
- Which kind of defects are introduced by doping?
- Silicon doped with electron-rich impurity forms.
- Which of the following statements is not true?
- Which of the following is not true about the ionic solids?
- A ferromagnetic _substance becomes a permanent magnet when it is placed in a magnetic field becuase
- The correct order of the packing efficiency in different types of unit cells is
- Which of the following defects is also known as dislocation defect?
- In the cubic close packing, the unit cell has
- Which of the following is not true about the voids formed in 3 dimensional hexagonal close packed structure?
