19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Tetragonal crystal system has the following unit cell dimensions
If the number of atoms per unit cell in a crystal is 2, the structure of crystal is
Given, Column A Column B A. Ionic solid I. NaCl B. Metallic solid II. Fe C. Covalent solid III. C(graphite) D. Molecular solid IV. Dry ice
The property of crystalline solid is not
Crystals can be classified into basic crystal habits equal to
The two dimensional coordination number of a molecule in square close packed layer is
An element has a body-centred cubic (bcc) structures with a cell edge of 444 pm. The density of the element is 7.2 g/cm3. How many atoms are present in 404 g of the element?
Which of the following is non-crystalline solid
Assertion No compound has both Schottky and Frenkel defects. Reason Both defects change the density of the solid. [AIIMS 2008]
Which of the following is a pseudo solid
Those substances which show permanent magnetism even in the absence of magnetic field are called
On the basis of their magnetic properties, substances can be classified into …A… categories. Here, A refers to
Electrons in a paramagnetic compound are
Solid CO₂ is an example of
In a cubic lattice of ABC, A atoms are present at all corners except one corner which is occupied by B atoms. C atoms are present at face centers. The formula of the compound is
Which of the following has the highest value of energy gap?
Doping of silicon (Si) with boron (B) leads to
Identify the incorrect statement.
The number of tetrahedral voids in the unit cell of a face centred cubic lattice of similar atoms is
Which of the following is an example of metallic crystal solid
Sodium metal crystallizes as a body centred cubic lattice with the cell edge 4.29Å. What is the radius of sodium atom.
A metal has bcc structure and the edge length of its unit cell is 3.04Å. The volume of the unit cell in cm will be
In CsCl lattice the coordination number of Cl– ion is
In a face-centred cubic lattice, a unit cell is shared equally by how many unit cells
The interionic distance for caesium chloride crystal will be