List of top Questions asked in KCET

During the adsorption of gas on a solid

The value of \(\cos(\sin^{-1}\frac{\pi}{3}+\cos^{-1}\frac{\pi}{3})\) is

Copper is extracted from copper pyrites by

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 ?

The domain of the function defined by f(x) = \(\cos^{-1}\sqrt{x-1}\) is

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

If A = {a, b, c}, then the number of binary operations on A is

Let f : [2, ∞) → R be the function defined by f(x) = x² - 4x + 5 , then the range of f is

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

If a relation R on the set {1, 2, 3} be defined by R = {(1, 1)}, then R 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

If A, B, C are three mutually exclusive and exhaustive events of an experiment such that P(A) = 2P(B) = 3P(C),then P(B) is equal to

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

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]

The standard deviation of the data 6, 7, 8, 9, 10 is

The negation of the statement “For all real numbers x and y, x + y = y + x” is

\(\lim\limits_{x\rightarrow0}(\frac{\tan x}{\sqrt{2x+4}-2})\) is equal to

If the parabola x² = 4ay passes through the point (2, 1), then the length of the latus rectum is

The two lines lx + my = n and l'x + m'y = n' are perpendicular if

If the sum of n terms of an A.P is given by S_n = n² + n, then the common difference of the A.P is

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