Explore topic-wise InterviewSolutions in .

The pair in which both the complexes have the same magnetic moment (spin only value) is:

An example for a saturated fatty acid, present in nature is

Which of these have inter-molecular hydrogen bond?

The electronic configuration of Ag atom is

Which of the following is the strongest Bronsted acid?

The first ionisation potential of Na is 5.1 eV. The value of electron gain enthalpy of $N{a}^{+}$ will be

The enol from of acetone after treatment with $D_{2}O$ gives:

When mercury is heated with aqua regia then which compound is formed?

The raw material used in nylon-6 is

Redox reactions play a pivotal role in chemistry and biology. The values of standard redox potential $\left(E_{\ominus }\right)$ of two half cell reactions decided which way the reaction is expected to proceed. A simple example is a Daniell cell in which zinc goes into solution and copper gets deposited. Given below are a set of half cell reactions (acidic medium) along with their $E_{\ominus }$ (V with respect to normal hydrogen electrode) values. Using this data, obtain correct explanations for the following question

$I_2+2e^{-}\to 2I^{\ominus };E^{\ominus }=0.54$

$C{l}_2+2e^{-}\to 2C{l}^{\ominus };E^{\ominus }=1.36$

$M{n}^{3+}+e^{-}\to M{n}^{2+};E^{\ominus }=1.50$

$F{e}^{3+}+e^{-}\to F{e}^{2+};E^{\ominus }=0.77$

$O_2+4H^{⨁}+4e^{-}\to 2H_{2}O;E^{\ominus }=1.23$



While $F{e}^{3+}$ is stable, $M{n}^{3+}$ is not stable in acid solution because

The empirical formula of a gaseous fluorocarbon is $C{F}_2$. At a certian temperature and pressure, a 1 L volume hold 8.95 g of this fluorocarbon. Under the same conditions, 1 L volume holds only 1.70 g gaseous $F_2$. Thus, fluorocarbon is_______.

(F = 19)

If the $E_{cell}^0$ for a given reaction has a negative value, which of the following gives the correct relationships for the values of $\Delta G^0$ and $K_{eq}$ ?

Carbon forms a large number of compounds due to:

Two radioactive elements X and Y have decay constants$\lambda$ and $10\lambda$ respectively. If decay begins with the same number of atoms of them, the ratio of atoms of X to those of Y after time $\frac{1}{9\lambda }$ will be

The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resin follows the order:

The IUPAC name of C₆H₅-CO-CH₂-CH₃

If the threshold wavelength $\left({\lambda }_0\right)$ for ejection of electron from metal is 330 nm, then work function for the photoelectric emission is:

(Planck's constant (h) = $6.6\times {10}^{-34}\text{J s}$)

1 mole of an ideal gas is compressed isothermally and reversibly at 298 K from a pressure of 1 Pa. To do a work of 100J, to what final pressure should we compress it? (R = 8.314 J/K/mol)

Which of the following is condensation reaction?

Which of the following phenols has the largest $p{K}_a$ value (i.e., least acidic)?

For $2S{O}_2\left(g\right)+O_2\left(g\right)\to 2S{O}_3\left(g\right)$, $\Delta H$ is equal to:

Which of the following is the exact sawhorse projection representation for the following newman projection?

We start with 2-cyclohexenone and subject it to (separate) reagents/reaction sequences A, B, C and D.

Each of these correspondingly yields the products.



From the options given, choose the correct ones that could be the reaction sequences

Studies on the elevation in boiling point of $Ca(N{O}_3{)}_2$ gives its molar mass to be $131.2\text{g/mol}$. The degree of dissociation of $Ca(N{O}_3{)}_2$ is:

Energy barrier between staggered and eclipsed conformation of ethane is?

How
many space lattices are obtainable from the different crystal systems

[MP PMT
1996; MP PET/PMT 1998]

The order of reactivity of the following substrates in a nucleophilic addition reaction is:

Which of the following is not correct about Molecular Orbital theory?

How many unbonded electrons are present on N in NO?

The compressibility factor of an ideal gas is equal to

Which one of the following is not a surfactant

Predict the correct intermediate and product in the following reaction

A golf ball has a mass of 40g and a speed of 45 m$s^{-1}$. If the speed can be measured with an accuracy of 2%, calculate the uncertainty in the position.

Most commercial hydrochloric acid is prepared by heating NaCl with concentrated $H_{2}S{O}_4$. How much sulphuric acid containing $90.0\%$ $H_{2}S{O}_4$by mass is needed for the production of 200 kg of conc. HCl containing $42.0\%$ HCl by mass?

Which of the following is not an example of cross-conjugation?

Which type of phenomenon is used when coloured sugar solution is decolourized by charcoal?

Using Oxidation-number method, find the net ionic equation for the following reaction in basic medium:

$Mn\left(OH{)}_2\right(s)+Mn{O}_4^{-}(aq)\to Mn{O}_2(s)$

The correct order of bond angle of $C-C-C$ in propane, propene and propyne are

Which of the following is a correct statement?

For the reaction : $aA+bB\to$ Products, the rate law is given by Rate = $k\left[A{]}^m\right[B{]}^n$. On making the concentration of A two-fold and halving that of B, the ratio of the new rate to the earlier rate of the reaction would be:

$Pb{O}_2$ is

The sum of molar masses of the products A, B, C and D is

Select the appropriate option.

Of the following, which compound is an acetal?

The reaction of phenol with chloroform in presence of dilute sodium hydroxide finally introduces which one of the following functional groups?

In Sodium atom, the screening of $3s$ electron is due to: