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Boric acid has a layer structure in which planar BO₃ units are joined by:

A metal crystallizes in a face centered cubic structure. If the edge length of its unit cell is ‘$a$’, the closest approach between two atoms in metallic crystal will be:

$(C{H}_3{)}_{3}C-\stackrel{\stackrel{O}{||}}{C}-N{H}_2\underset{\left(ii\right)D_{2}O}{\overset{\left(i\right)O{D}^{-}/B{r}_2}{\to }}$ Product P is

To form alkane isonitrile, alkyl halide is reacted with:

If
and,
find k so
that

In a cubic structure of a crystal which is made from X and Y, where X atoms are at the corners of the cube and Y at the face centres of the cube. The molecular formula of the compound is :

Which of the following gas molecule has the largest mean free path at the same pressure and temperature ?

Going from fluorine to chlorine, bromine and iodine, the electronegativity

Preparation of inorganic graphite

Pls help me by providing practice Questions for concentration terms

A sudden large jump between the values of second and third ionization energies of an element would be associated with the electronic configuration.

Time
required to decompose SO₂Cl₂
to half of its initial amount is 60 minutes. If the decomposition is
a first order reaction, calculate the rate constant of the reaction.

For the reaction $2X+Y_2⟶2XY$the following mechanism has been given:

$X+Y_2\rightleftharpoons X{Y}_2{K}_{eq}\left(\text{Equilibrium constant}\right)$

$X{Y}_2+X⟶2XY\left(slow\right)k\left(\text{rate constant}\right)$

Order of the reaction is:

When tert-butylchloride is added to an equal amount of ethanol in an inert solvent, one of the products is ethyl tert-butyl ether. When the concentration of tert-butyl chloride is doubled, the rate of the reaction:

$C_{graphite}+O_2\left(g\right)\to C{O}_2\left(g\right)$

$\Delta H=-94.05kcalmo{l}^{-1}$

$C_{diamond}+O_2\left(g\right)\to C{O}_2\left(g\right);\Delta H=-94.50kcalmo{l}^{-1}$ therefore

In the reaction shown below, the major product(s) formed is/are

(IIT-JEE Advanced, 2014)

Classify
the following into monosaccharides and disaccharides.

Ribose,
2-deoxyribose, maltose, galactose, fructose and lactose

Give the decreasing order of the stabilities of the following:

The nitrogen oxide that does not contain a N - N bond is:

If, in the first orbit of a hydrogen atom, the total energy of the electron is $-21.76\times {10}^{-19}J$, then the electric potential energy of an electron belonging to the second orbit of the same atom, will be,

Explain:

Zone refining

Column chromatography .

For oxidizing alcohols, several oxidants – each with a multivalent central atom as the active species – can be used. When DMSO, with S as the multivalent atom is used in Swern oxidation, how many bonds to oxygen atoms does each central multivalent atom have just before and immediately after the oxidation respectively?