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Thorium disintegration series is known as:

Whenever a radioactive element undergoes disintegration by emitting 2 α- particles and 3 β- particles. Now its position is-

a. In the same group as the original element

b. In the group preceding the position of the original element.

c. In the group succeeding the position of the original element.

d. Four place ahead of the position of the original element.

How
can the production of dihydrogen, obtained from ‘coal
gasification’, be
increased?

The heats of neutralisation of $C{H}_{3}COOH$, HCOOH, HCN and $H_{2}S$ are -12.8, -13.2, -3.2 and -3.9 kcal per equivalent. Arrange these acids in increasing order of strength.

The compound which would yield 5 – Oxo, 2 – methyl hexanal on reductive ozonalysis

Plot of log x/m against log P is a straight line inclined at an angle of ${45}^{\circ }$. When the pressure is 0.5 atm and Freundlich parameter. K is 100, the amount of the solute adsorbed per gram of adsorbent will be (log 5 = 0.6990)

The effective atomic number of central metal ion is wrongly calculated in the following complex?

For the following reaction:

$xA\to yB$

${\log }_{10}[-\frac{d\left[A\right]}{dt}]={\log }_{10}\left[\frac{d\left[B\right]}{dt}\right]+{\log }_{10}\left(3\right)$

Here $x,y$ are the stoichiometric coefficients of reactant A and product B respectively.

Negative sign indicates rate of disappearance of the reactant.

Calculate the value of $x:y$

How would
you account for the following:

(i) Of the d⁴species, Cr²⁺
is strongly reducing while manganese(III) is strongly oxidising.

(ii) Cobalt(II)
is stable in aqueous solution but in the presence of complexing
reagents it is easily oxidised.

(iii)
The d¹
configuration is very unstable in ions.

Arrange in order of increasing dipole movement.

I. Toulene

II. m - dichlorobenzene

III. o - dichlorobenzene

IV. p - dichlorobenzene

A hydrocarbon contains 7.70% hydrogen. 0.56L of the hydrocarbon weighs 1.95g at STP. Then hydrocarbon is an

A
1000 MW fission reactor consumes half of its fuel in 5.00 y. How much

did
it contain initially? Assume that the reactor operates 80% of the
time, that all the energy generated arises from the fission of
and
that this nuclide is consumed only by the fission process.

Addition of KI accelerates the hydrolysis of primary haloalkanes because

The type of hybridization involved in the metal ion of $\left[Ni\right(H_{2}O{)}_6{]}^{2+}$ complex is

Which one of the following will not react with the grignard reagent $\left(C_6{H}_{5}MgBr\right)?$

What will be the packing fraction in the following case?

The sphere is touching the sides of the cube exactly.

Reagent that takes away an electron pair is called as:

Plots showing the variation of the rate constant (k) with temperature (T) are given below. The plot that follows Arrhenius equation is:

The nitro group in nitrobenzene is a/an

Arrange in increasing order of solubility of $AgBr$ in the given solutions.
(i) $0.1MN{H}_3$
(ii) $0.1MAgN{O}_3$
(iii) $0.2MNaBr$
(iv) Pure water

Which of the following structure will be more stable?

Hydrogen by donating one electron forms $H^{+}$. In this property, it resembles the