Chemistry

BOD values (in ppm) for clean water (A) and polluted water (B) are expected respectively

The density of an organic ligand, biuret is:

The major component/ingredient of Portland Cement is:

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Aluminuim is extracted from bauxite by the electrolysis of molten mixture of Al₂O₃ with cryolite.

Reason (R): The oxidation state of Al in cryolite is +3.

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

Select the graph that correctly describes the adsorption isotherms at two temperature T₁ and T₂ (T₁ > T₂) for a gas:

 (x – mass of the gas adsorbed ; m – mass of adsorbent ; P – pressure

Choose the correct name for compound given below:

Given below are two statements:

Statement-I : The process of producing syn-gas is called gasification of coal.                                     

Statement-II : The composition of syn-gas is CO + CO₂ + H₂ (1 : 1 : 1)

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

The structure of product C, formed by the following sequence of reactions is:

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Metallic character decreases and non-metallic character increases on moving from left to right in a period.

Reason (R) : It is due to increase in ionization enthalpy and decrease in electron gain enthalpy, when one moves from left to right in a period.

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

$\overline{Ge\left(Z=32\right)}$ in its ground state electronic configuration has x completely filled orbitals with m₁ = 0. The value of x is_________.