List of top Chemistry Questions asked in KCET

How many moles of acidified K₂ Cr_{2 ​}O₇ ​ is required to liberate 6 moles of I₂ ​ from an aqueous solution of I⁻ ?

Identify the set of paramagnetic ions among the following:

Phosphorus pentachloride

Incorrectly matched pair is:

Bond angle in $PH^+_4$ is more than that of $PH_3$. This is because

Aqueous solution of a salt $(A)$ forms a dense white precipitate with $BaCl_2$ solution. The precipitate dissolves in dilute $HCl$ to produce a gas $(B)$ which decolourises acidified $KMnO_4$ solution $A$ and $B$ respectively are :

sulphide are on roasting gives a gas x. x reacts with cl₂ in the presence of activated charcoal to give Y.Y is:

Copper is extracted from copper pyrites by

The rate constant of a reaction is given by $k=P Ze^{-Ea/RT}$ under standard notation. In order to speed up the reaction, which of the following factors has to be decreased ?

For an elementary reaction $2A+3B \to 4C+D$ the rate of appearance of $C$ at time $t$ is $2.8\times10^{-3} \,mol \,L^{-1}S^{-1}$. Rate of disappearance of $B$ at $t$ will be

During the adsorption of gas on a solid

A sol of $AgI$ is prepared by mixing equal volumes of $0.1M \, AgNO_3$ and $0.2M KI$, which of the following statement is correct ?

In which of the following cases a chemical reaction is possible ?

If an aqueous solution of NaF is electrolyzed between insert electrodes, the product obtained at anode is

The time required for $60\%$ completion of a first order reaction is $50$ min. The time required for $93.6\%$ completion of the same reaction will be

Given E⁰_Fe+3/Fe+2=+0.76V and E⁰½2l^-=+0.55V. The equilibrium constant for the reaction taking place in galvanic cell consisting of above two electrodes is [\(\frac{2.303RT}{F}\)=0.06]

Solute ‘X’ dimerises in water to the extent of 80%.2.5g of ‘X’ in 100g of water increases the boiling point by 0.3∘C. The molar mass of ‘X’ is [K_b​=0.52Kkgmol⁻¹]

Which one of the following is an isotonic pair of solution ?

The pair of electrolytes that posses same value for the constant (A) in the Debye - Huckel - Onsagar equation, $\lambda_m = \lambda^0_m - A\sqrt{C}$ is

Silicon doped with gallium forms

A metal crystallises in face centred cubic structure with metallic radius 2​A∘. The volume of the unit cell (in m³) is

Which of the following is Not a green house gas?

The oxide of potassium that does not exist is

Which of the following is not a pair of functional isomers?