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What will be the pressure of the gaseous mixture when 0.5 L of $H_2$ at 0.8 bar and 2.0 L of dioxygen at 0.7 bar are introduced in a 1 L vessel at ${27}^{\circ }C$?

The correct structure of $Xe{F}_4$ is:

Which one is not equal to zero for an ideal solution ?

By which mechanism does the above reaction proceed ?

Cathode rays are emmited from the surface of cathode so is their direction affected by position of anode?

The ether that undergoes electrophilic substitution reactions is:

Which of the following is not a Lewis acid ?

QUESTION 2.18

Calculate the mass of a non-volatile solute (molar mass $40gmo{l}^{-1}$) which should be dissolved in 114g octane to reduce its vapour pressure to $80\%$.

For oxidizing alcohols, several oxidants – each with a multivalent central atom as the active species – can be used. When a secondary alcohol is oxidized to a ketone, how many bonds does the carbinol carbon have before and after the oxidation respectively?

Which of the following is/are polar?

Which of the following has a trigonal planar shape?

In the hydrolysis of ICl, the products are:

Among these compounds, the order of heats of hydrogenation is:

A solution of sodium sulphate in water is electrolyzed using inert electrodes. The products at cathode and anode are, respectively,

At ${25}^{0}C$ and 1 atmospheric pressure, the partial pressures in equilibrium mixture of gaseous $N_2{O}_4$ and $N{O}_2$ are 0.7 and 0.3 atm respectively. Calculate the partial pressure of the $N_2{O}_4$ gas when it is in equilibrium ${25}^{o}C$ and the total pressure of 10 atm

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:

Why can't molecularity of any reaction be equal to zero?

Consider a certain reaction; A $\to$ products with $k=2.0\times {10}^{-2}{s}^{-1}$. Calculate the concentration of A remaining after 100 s, if the initial concentration of A is $1.0mol{L}^{-1}$.

The order of reactivity of following alcohols with halogen acids is .......

(A) $C{H}_{3}C{H}_2-C{H}_2-OH$ (B)

(a) (A) > (B) > (C) (b) (C) > (B) > (A)

(c) (B) > (A) > (C) (d) (A) > (C) > (B)

Given that $K_a$ for $HClO$ and $HCN$ are $3.0\times {10}^{-8}$ and $4.8\times {10}^{-10}$, respectively, the equilibrium constant for the reaction
$HClO\left(aq\right)+C{N}^{-}\left(aq\right)\rightleftharpoons Cl{O}^{-}\left(aq\right)+HCN\left(aq\right)$, is:

Which among the following elements have lowest value of $I{E}_1$

Which of the following ion will be most effective in coagulating organic sulphid sol?

For the reaction 4NH₃ +5O₂ gives 4NO + 6H₂O, the rate of reaction with respect to NH₃ is 2*10^-3 Ms^-1.Then the of the reaction with respect to oxygen is

Compare heat of combustion for the given compounds.

The figure shows a conducting wire wound in a helical shape so as to form a spring. The bottom end of the wire barely touches mercury (a good electrical conductor). After the switch is closed, current in the circuit causes the light to glow. The bulb will

Select the reaction(s), in which energy need to be provided

Oxygen gas weighing $64g$ is expanded from $1atm$ to $0.1atm$ at $30{}^{o}C.$ Calculate entropy change, assuming the gas to be ideal

The correct combination of names for isomeric alcohols with molecular formula $C_4{H}_{10}O$ is/are:

Match the following column and correct options.
$\begin{array}{cccc}& \text{Column I}& & \text{Column II}\\ \left(a\right)& \text{Raoult's law}& \left(p\right)& \text{Effect of pressure on solubility of gas in liquid}\\ \left(b\right)& \text{Henry's law}& \left(q\right)& \frac{P^o-P_s}{P^o}=X_B\\ \left(c\right)& \text{Ethyl alcohol + Water}& \left(r\right)& \text{Ideal solution}\\ \left(d\right)& \text{Benzene +Toluene}& \left(s\right)& \text{Azeotropic mixture}\end{array}$

s - character in ${sp}^3$ hybridization is

Why water is a liquid where as H₂S is a gas..!? Explain on the basis of polarity.

Determine the empirical formula of an oxide of iron which has 69.9% iron and 30.1 % dioxygen by mass.

Mole fraction of iodine in Benzene is 0.2.Calculate molality of iodine in Benzene.

The whole mixture in the calorimeter becomes ice, if,

Decreasing order of acidic nature of following is:
$\left(i\right)HCOOH\left(ii\right)Ph-COOH\left(iii\right)Ph-OH$
$\left(iv\right)C{H}_{3}COOH$