List of top Questions asked in KCET

Which formula and name combination is INCORRECT ?

\(aMnO^{-}_4+bS_2O_{3}^-+H_2O\rightarrow xMnO_2+ySO_{4}^-+zOH^-\)
a and y respectively are

Which of the following is CORRECT with respect to melting point of a transition element?

In solid state, PCl₅ is a/an

For Freundlich adsorption isotherm, a graph of log (x/m) Vs. log (P) gives a straight line. The slope of line and its Y-axis intercept respectively are

Aqueous solution of raw sugar when passed over beds of animal charcoal, it becomes colourless. Pick the correct set of terminologies that can be used for the above example.

	Adsorbent	Adsorbate	Process
(1)	Solution of Sugar	Animal Charcoal	Soprtion
(2)	Animal Charcoal	Solution of Sugar	Absorption
(3)	Animal Charcoal	Colouring Substance	Adsorption
(4)	Colouring Substance	Animal Charcoal	Adsorption

Which of the following compound does not give dinitrogen on heating ?

For the formation of which compound in Ellingham diagram ΔG° becomes more and more negative with increase in temperature ?

When FeCl₃ is added to excess of hot water gives a sol ‘X’. When FeCl₃ is added to NaOH_(aq) solution, gives sol ‘Y’.
X and Y formed in the above processes respectively are

Consider the following 4 electrodes
A : Ag⁺ (0.0001 M)/Ag_(s) ;  B : Ag⁺ (0.1 M) / Ag_(s)
C : Ag⁺ (0.01 M)/Ag_(s) ;        D : Ag⁺ (0.001 M) / Ag_(s); \(E^{\degree}_{Ag^{+/Ag}}\)=+ 0.80 V
Then reduction potential in volts of the electrodes in the order

For a reaction, the value of rate constant at 300 K is 6.0 ×10⁵ s^-1. The value of Arrhenius factor A at infinitely high temperature is :

During the electrolysis of brine, by using inert electrodes,

The rate constants k₁ and k₂ for two different reactions are 10¹⁶ × e^-2000/T and 10¹⁵ × e^-1000/T respectively. The temperature at which k₁ = k₂ is :

The resistance of 0.1 M weak acid HA in a conductivity cell is 2 × 10³ Ohm. The cell constant of the cell is 0.78 C m^-1 and \(\lambda_{m}^{\degree}\) of acid HA is 390 S cm² mol^-1. The pH of the solution is

In which one of the following reactions, rate constant has the unit mol L^-1 s^-1 ?

A metal crystallises in a body centered cubic lattice with the metallic radius \(\sqrt3 Å\). The volume of the unit cell in m³ is

Match the column A (type of crystalline solid) with the column B (example for each type) :

A		B
P.	Molecular Solid	i.	SiC
Q.	Ionic Solid	ii.	Mg
R.	Metallic Solid	iii.	H2O
S.	Network Solid	iv.	MgO

Dimerisation of solute molecules in low dielectric constant solvent is due to :

A 30% solution of hydrogen peroxide is

If 'a' stands for the edge length of the cubic systems - The ratio of radii in simple cubic, body centered cubic and face centered cubic unit cells is

What is the oxidation number of S in H₂S₂O₈ ?

Which one of the following gases converts haemoglobin into carboxy haemoglobin ?

Among the following :

The set which represents aromatic species is

IUPAC name of the compound is

The composition of water gas is