Chemistry

Dichromate ion is treated with base, the oxidation number of Cr in the product formed is-----------.

An homogeneous ideal gaseous reaction $A{B}_{2\left(g\right)}?A_{\left(g\right)}+2B_{\left(g\right)}$  is carried out in a 25 litre flask at 27°C. The initial amount of AB₂ was 1 mole and the equilibrium pressure was 1.9atm. The value of K_p is x * 10^-2. The value of x is-----------. (Integer answer).

[R = 0.08206 dm³ atm K^-1 mol^-1]

An exothermic reaction X → Y has an activation energy 30 kJ mol^-1. If energy change $\Delta E$ during the reaction is -20 kJ, then the activation energy for the reverse reaction in kJ is-----------. (Integer answer)

Consider the following reaction

$Mn{O}_4^{-}+8H^{+}+5e^{-}\to M{n}^{+2}+4H_{2}O,E°=1.51V.$

The quantity of electricity required is Faraday to reduce five moles of $Mn{O}_4^{-}$  is--------.

(Integer answer)

A certain gas obeys $P\left(V_m-b\right)=RT.$ The value of ${\left(\frac{\partial z}{\partial P}\right)}_{T}is\frac{xb}{RT}.$ The value of x is------------.

(Integer answer) (Z : compressibility factor)

Number of bridging CO ligands in $\left[M{n}^2{\left(CO\right)}_{10}\right]$ is----------.

For the given reaction

Statements about heavy water are given below

(a) Heavy water is used in exchange reaction for the study of reaction mechanisms.

(b) Heavy water is prepared by exhaustive electrolysis of water

(c) Heavy water has higher boiling point than ordinary water.

(d) Viscosity of H₂O is greater than D₂O.

Choose the most appropriate answer from the options given below:

The presence of ozone is troposphere

Given below are two statements:

Statements I : o- Nitrophenol is steam volatile due to intramolecular hydrogen bonding.

Statement II : o- Nitrophenol has high melting due to hydrogen bonding.

In the light of the above statements, choose the most appropriate answer from the options given below