MCQ_SINGLE

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Generally, 3d transition metals have high melting points. Reason R: Involvement of 3d-electrons in addition to 3s-electrons in the interatomic metallic bonding. In light of the above statements, choose the most appropriate answer from the options given below:

MCQ_SINGLE

Which of the following is not a part of human central neural system?

MCQ_SINGLE

The standard electrode potential $(E^{\circ})$ for the half-cell reaction $Fe^{3+}+e^{-}\rightarrow Fe^{2+}$ at 298 K is (Given: $E^{\circ}(Fe^{3+}/Fe)=-0.041$ V and $E^{\circ}(Fe^{2+}/Fe)=-0.44$ V at 298 K)

MCQ_SINGLE

Consider the reversible processes for 1.0 mol of an ideal gas as shown in the figure. $W_{1}$, $W_{2}$, $W_{3}$ and $W_{4}$ represent work done (in calories) in the processes 1, 2, 3 and 4, respectively; $\Delta U_{2}$ and $\Delta U_{4}$ are changes in the internal energy for the processes 2 and 4, respectively. [use $R=2~cal~K^{-1}~mol^{-1}$] The correct option is

MCQ_SINGLE

Which of the following statements about lac-operon is correct?

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