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The increasing order of acidities of the shown hydrogen atoms among the following is:

The equivalent weight of $MnS{O}_4$ is half its molecular weight when it is converted to

(IIT-JEE, 1988)

The total entropy change $\left(△S_{total}\right)$ for the system and the surrounding of a spontaneous process is given by:

The most impure and pure forms of iron respectively are:

Which one is the absolutely specific term?

Size of colloidal particles is

[CPMT 1984; MP PMT 1990, 92]

Predict the products of:

For an equilibrium reaction A (g) + B (g)$\rightleftharpoons$ C (g) + D (g),$\Delta H$ = +ve. An increase in temperature would cause

Arrange following in decreasing order of van der Waals' constant ${}^{\prime }{a}^{\prime }$ values: $H_{2}O,C{O}_2,Ar$

In this sequence, incorrect statement is

Which of these has zero net dipole moment?

In polar stratospheric clouds, chlorine nitrate on hydrolysis yields:

The concentration of formate ion $\left(HCO{O}^{-}\right)$ present in 0.1 M formic acid $\left(HCOOH\right)$ solution at equilibrium is :

$(K_a=1.6\times {10}^{-4})$

Which of the following graphs correctly represents the variation of $\beta$ = - $(\frac{\frac{dV}{dP}}{V}{)}_{\gamma }$ with P for an ideal gas at constant temperature.

If v is the volume of one molecule of a gas under given conditions then va der Waals' constant b is

If x g of metal oxide contains y g of metal, then the equivalent weight of the metal will be



यदि x g धातु ऑक्साइड में y g धातु है, तो धातु का तुल्यांकी भार होगा

Calculate the frequency of the limiting line of Brackett series in the hydrogen spectrum.

Both acid and base may react with which of the following oxides?

Copper matte is a molten mixture of

Calculate the frequency of a wave with wavelength $4\times {10}^7$ nm .

$KMn{O}_4$ will oxidize acetylene to

Correct IUPAC name of the following compound is

Which of the following group(s) show $+M$ effect?

The latent heat of vapourisation of water is 9700 cal/mole. If the boiling point is 100°C, the ebullioscopic constant of water is

The correct order for the increasing heat of hydrogenation for the following structures is :

Packing fraction in a hexagonal arrangement is:

Rhombic
sulphur has the following structure

The electronic configurations of four elements are given below. Which of the corresponding elements has maximum total electronic spin?

Arrange $C{e}^{+3},L{a}^{+3},P{m}^{+3}$ and $Y{b}^{+3}$ in increasing order of their ionic radii

A compound ‘X’ on ozonolysis forms two molecules of HCHO. Compound ‘X’ is

What will be the central atom of $AlC{l}_3$?

Poisonous gas 'Lewissite' is obtained by the reaction of

When a saturated solution prepared at a higher temperature is cooled, we get:

Write the product of the following reaction:

10 mole of ideal gas expands isothermally and reversibly from a pressure of 10 atm to 1 atm at 300 K. What is the heavisest mass which can lifted through a height of 100 meter by this gas?

Based on the following, which comparison(s) is/are correct?

In a series of reactions, which is the rate-determining step?

The vitamin responsible for blood coagulation is

Carbinol is[RPMT 2000]

The outermost electronic configuration of the element with least electronegativity among the following is?

The effective atomic number of cobalt in the complex $\left[Co\right(N{H}_3{)}_6{]}^{3+}$ is:

The number of sodium atoms in 4 moles of sodium ferrocyanide $\left(N{a}_3\right[Co\left(N{O}_2{)}_6\right])$ is:

(Consider Avogadro's number = $6\times {10}^{23})$

What will be the normality of the solution obtained by mixing $50mL$ of $0.2M{H}_{2}S{O}_4$​ with $50mL$ of $0.1NCa(OH{)}_2$ ?