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Which one has the highest boiling point ?

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The x-coordinate of the incentre of the triangle that has the coordinates of mid points of its sides as (0, 1), (1, 1) and (1, 0) is

A gaseous hydrocarbon gives upon combustion 0.72 g of water and 3.08 g of $CO_{2}.$ The empirical formula of the hydrocarbon is:

Which of the following represents the correct order of increasing first ionization enthalpy for Ca, Ba, S, Se and Ar?

Let A and B be two sets containing 2 elements and 4 elements respectively. The number of subsets of $A×B$having 3 or more elements is

A uniformly charged solid sphere of radius R has potential $V_{0}$ (measured with respect to $∞$ ) on its surface. For this sphere the equipotential surface with potentials $23V_{0} ,45V_{0} ,43V_{0} and4V_{0} $ have radius \displaystyle{R}_{}

The vapour pressure of acetone at $20_{∘}C$ is 185 torr. When 1.2 g of a non - volatile substance was dissolved in 100 g of acetone at $20_{∘}C$, its vapour pressure was 183 torr. The molar mass $(gmol_{−1})$ of the substance is :

Let O be the vertex and Q be any point on the parabola,$x_{2}=8y$. It the point P divides the line segment OQ internally in the ratio 1 : 3, then the locus of P is :

An ideal gas enclosed in a vertical cylindrical container supports a freely moving piston of mass M. The piston and cylinder have equal cross sectional area A. When the piston is in equilibrium, the volume of the gas is $V_{0}$ and its pressure is $P_{0}.$ The piston is slightly displaced from the equilibrium position and released. Assuming that the system is completely isolated from its surrounding, the piston executes a simple harmonic motion with frequency: