Generally the major component of soap bars is :

Calculated value of magnetic moment (BM) of an aqueous solution of \(M n ^{ 2 + }\) is ___________

Which of the following vitamins is soluble in water?

Which one of the following statements regarding electrolytic solution is not correct?

The standard reduction potentials are given as:
\(\begin{array}{l}
E_{K^{+} / K}^{\circ}=-2.93 V \\
E_{Ag^{+} / Ag}^{\circ}=+0.80 V \\
E_{Cu^{2+} / Cu}^{\circ}=+0.34 V \\
E_{Ni^{2+} / Ni}^{\circ}=-0.25 V \\
E_{Li^{+} / Li}^{\circ}=-3.05 V
\end{array}\)
Arrange the following metals in increasing order of their reducing power:
A.K
B. Ag
C. Cu
D. Ni
E. Li
Choose the correct answer from the options given below:

Pick the reactions which can be used to distinguish between n-propyl alcohol and isopropyl alcohol.
(A) Haloform reaction
(B) Dehydration
(C) Dehydrogenation with \(\mathrm{Cu} / 573 \mathrm{~K}\)
(D) Oxidation with \(\mathrm{CrO}_3\)
Choose the correct answer from the options given below:

Read the passage carefully and answer the Questions
Werner in 1898, propounded his theory of coordination compounds. In coordination compounds metals show two types of linkages (valences)-primary and secondary. The primary valences are normally ionisable and are satisfied by negative ions. The secondary valences are non-ionisable. These are satisfied by neutral molecules or negative ions. The secondary valence is equal to the coordination number and is fixed for a metal. The ions or group bound by the secondary linkages to the metal have characteristic spatial arrangements corresponding to the different coordination numbers. Both double salts as well as complexes are formed by the combination of two or more stable compounds in stoichiometric ratio. However, they differ in the fact that double salts such as carnallite, Mohr's salt, potash alum etc. dissociate into simple ions completely when dissolved in water. But complex ions do not dissociate completely into simple ions.
Which of the following statement is correct as per Werner theory?

For the matrix \(A=\left[\begin{array}{ll}3 & 1 \\ 7 & 5\end{array}\right], 8 A^{-1}=\) ‾‾‾‾‾‾‾‾‾‾

An electric dipole is placed at an angle of \(30^\circ\) with an electric field of intensity \(3 \times 10^5 \text{ N/C}\). It experiences a torque equal to \(6 \text{ N m}\). If the dipole length is 2 cm, the value of charge will be

The internal resistance of a cell of emf 2 V is 0.1 \( \Omega \). It is connected to an external resistance of 3.9 \( \Omega \). The terminal potential difference across the cell will be

Two nuclei have mass numbers 125 and 27, respectively. The mass density ratio of their nuclei will be

An armature coil consists of 20 turns of wire, each of area \( A = 0.09 \text{ m}^2 \) and total resistance \( 15 \ \Omega \).
It rotates in a magnetic field of 0.5 T perpendicular to the axis of rotation at a constant frequency \( \frac{150}{\pi} \text{ Hz} \). The value of maximum emf produced in the coil is:

Acetaldehyde and benzaldehyde can be best distinguished by: