Na and Mg crystallize in BCC and FCC type crystals respectively, then the number of atoms of Na and Mg present in the unit cell of their respective crystal is :

The reaction : $$(CH{)}_{3}C-Br\text{buildrel}{H}_{2}O\frac{⟶}{(CH{)}_3}C-OH$$

For the reaction A + 2B $$\to$$ C, rate is given by R = [A] [B]2 then the order of the reaction is

Units of rate constant of first and zero order reactions in terms of molarity M unit are respectively

The integrated rate equation is Rt = log C0 - log Ct . The straight line graph is obtained by plotting

$$\beta$$ - particle is emitted in radioactivity by

If half-life of a substance is 5 yrs, then the total amount of substance left after 15 years, when initial amount is 64 grams is

The differential rate law for the reaction H2 + I2 $$\to$$ 2HI is

The formation of gas at the surface of tungsten due to adsorption is the reaction of order :

Alum helps in purifying water by :

Which of the following is a redox reaction ?

In XeF2, XeF4, XeF6 the number of lone pairs of Xe are respectively :

Number of sigma bonds in P4O10 is :

In case of nitrogen, NCl3 is possible but not NCl5 while in case of phosphorous, PCl3 as well as PCl5 are possible. It is due to :

When H2S is passed through Hg2S we get :

Oxidation number of Cl in CaOCl2 (bleaching powder) is :

The compound is used as

The metallic sodium disolves in liquid ammonia to form a deep blue coloured solution. The deep blue colour is due to formation of :

KO2 (potassium super oxide) is used in oxygen cylinders in space and submarines because it :

A metal M readily forms its sulphate MSO4, which is water-soluble. It forms its oxide MO which becomes inert on heating. It forms an insoluble hydroxide M(OH)2 which is soluble in NaOH solution. The M is :