Which of the following is not the application of gel filtration? (PPSC 2021)(a) Purification(b) Relative molecular mass determination(c) Protein concentration(d) None of theseAnswer: (d) Which solvent is usually used for SEC…
Which of the following elements is the most electropositive??(a) B(b) C(c) Cl(d) NAnswer: (a)Explanation“Electropositivity can be defined as the tendency of an atom to donate electrons and form positively charged cations.”…
Quantum Chemistry Total number of nodes for 3d orbital is __(a) 3(b) 2(c) 1(d) 0Answer: (b)ExplanationTotal number of nodes include angular and radial nodes. Angular nodes and radial nodes are given…
A white light when passed through prism isDeviatedDispersedNone of theseAnswer: Dispersed 40 dB + 44 dB = ?40 dB41 dB44 dB45 dBAnswer: 45 dB A string fixed at both ends forms…
Temperature of a gas increases from 10C to 20C, what happens to the viscosity of the gas?IncreasesDecreasesRemains sameNone of theseAnswer: Increases Terminal velocity does not depends uponFalling timeAreamassviscosityAnswer: Falling time [PPSC…
According to second condition of equilibrium, for a system to be in rotational equilibrium, the torques acting on it must balance. This is true only if the torques are taken about:the…
[PPSC 2017] Work done to stop the motion of car is equivalent to:Thermal EnergyK.E.P.E.None of theseAnswer K.E [PPSC 2017] Work done in circular motion after complete cycle? Radius is 5m with…
1.The correct increasing order of splitting power of ligands according to spectrochemical series is(a) Cl– < OH– < CN–(b) Cl– < CN– < OH–(c) OH– < Cl– < CN–(d) none of…
When 1 litre of water is cooled from 4°C to 0°C, its volume _.?(a) First decreases and then increases(b) Remains the same(c) Increases(d) DecreasesAnswer: (c)ExplanationWhen 1 litre of water is cooled…
Heat does not spontaneously flow from a colder body to a hotter one. Which of the following thermodynamics law states this?(a) Zeroth law of thermodynamics(b) First law of thermodynamics(c) Second law…