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Practice Online Test Series for JEE Main 2018 & NEET 2018
Which of the following polymer, not having `C-C` bond formation during polymerization?
Which of the following monomers has the greatest ability to undergo cationic polymerization?
Orion is polymer of:
The maximum prescribed concentration of cadmium in drinking water in ppm is
Which of the following statements is wrong?
A metal M is crystallized in F.C.C lattice. The number of unit cells in it having `2.4xx10^(24)` atoms.
Sodium crystallizes in a bcc lattice hence the coordination number of sodium in sodium metal is
A solid has a structure in which W atoms are located at the corners of the lattice. O atoms at the centre of the edges and Na atom at the centre of the cube. The formula of the compound is
A compound `M_pX_q` has cube close packing (ccp) arrangement of X, its unit cell structure is shown below. The empirical formula of the compound is
The percentage of void space of a metallic element crystallizing in a ABCABC ..........Type lattice pattern is
A metallic element has a cubic lattice. Each edge of the unit cell is `2A^o`. The density of the metal is 2.5 gc`m^(-3)`. The unit cells in 200g of metal are
When molten Zn is cooled to solid state, it assumes hep structure. Then the number of nearest neighbours of Zn atoms will be
If Indium is added in small quantity of Ge metal, we get
Which of the following system is not correctly characterized?
AB is an ionic solid. If the ratio of ionic radii of `A^+` and `B^-` is 0.52. What is the co-ordination number of `B^-` ?
In a compound atoms of element Y from ccp latticc and those of element X occupy `(2/3)^(rd)` of tetrahedralvoids. The formula of the compound will be
The edge length of a face centered cubic cell of an ionic substance is 508 pm. If the radius of the cation is 110 pm, the radius of the anion is
Copper crystallizes in fcc with a unit cells length of 361 pm. What is the radius of copper atom?
`CsCl` crystallizes in body centred cubic lattice. If a is its edge length then which of the following expressions is correct
In a compound, atoms of element Y form hexagonal closest packing and those of element X occupy `2/3` of tetrahedral voids. The formula of the compound will be
