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…
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…
1. Highest pH will be recorded for which of the following solutions if they are equimolar(a) AlCl3(b) LiCl(c) BeCl2(d) BaCl2Answer: (d)ExplanationAlCl3 is made up of AlOH3 and HCl.LiCl is made up of…
1.Find the pair with sp2 hybridization of the central molecule (a) NH3 and NO2– (b) BF3 and NH2– (c) BF3 and NO2– (d) none of these Explanation To find the hybridization of central atoms: For…