The entities which donot dissociate into simple ions are :
A. \([Fe(CN)_6]^{4-}\)
B. \(KCl \cdot MgCl_2 \cdot 6H_2O\)
C. \(K_4[Fe(CN)_6]\)
D. \(KAl(SO_4)_2 \cdot 12H_2O\)
E. \(FeSO_4 \cdot (NH_4)_2SO_4 \cdot 6H_2O\)
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The negatively charged sol among the following is:

Match List-l with List-II

List-l (Compound Name)	List-II (Boiling Point)
(A) \(CH_3CH_2OH\)	(I) 373K
(B) \(CH_3OCH_3\)	(II) 348K
(C) \(H_2O\)	(III) 351K
(D) \(CH_3CH_2OCH_2CH_3\)	(IV) 248K

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Arrange the following alkyl halides in increasing order of reactivity towards \(SN ^2\) reaction?
(A)\(CH _3- Cl\)
(B)\(CH _3- Br\)
(C)\(CH _3- F\)
(D)\(CH _3- I\)
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Answer the question on basis of passage given below :
P block elements are placed in groups 13 to 18 of the periodic table. Their valence shell electronic configuration is \(ns^2 np^{1-6}\). Group 16 of the p block elements are known as the group of chalcogens having \(ns^2 np^4\) as their general electronic configuration. They exhibit number of oxidation states but the stability of \(- 2\) oxidation state decreases down the group. They are sometimes also known as group of chalcogens as the name is derived from the Greek word for brass and points to the association of sulphur and its congeners with copper. Their ionisation enthalpy decreases down the group. Oxygen shows anomalous behaviour due to its small size and high electronegativity.
Match the oxidation state of phosphorous in the following compounds to their counter parts in List II.

List - I (Compounds)	List - II (Oxidation States)
(A) \(H _3 PO _2\)(Hypophosphorous acid)	(I) +3
(B)\(H _4 P _2 O _6\)(Hypophosphoric acid)	(II) +5
(C) \(H _3 PO _3\)(Phosphorous acid)	(III) +1
(D)\(H _3 PO _4\)(Orthophosphoric acid)	(IV) +4

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Kohlrausch's Law helps to find:

Among the following compounds, which will not undergo oxidation reaction?

\(\frac{d^2}{d x^2}\left(\operatorname{det}\left[\begin{array}{cc}x^3 & x \\ 2 & e^x\end{array}\right]\right)\) equals

Which of the following compound(s) does not react with Fehling solution?
(A) \(CH _3 CHO\)
(B) \(Ph - CHO\)
(C) Glucose
(D)

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Despite occupying about 70% of the surface area of earth, the productivity
of the oceans is low because-

A coil of inductance 0.50 H and resistance 100 \( \Omega \) is connected to 240 V, 50 Hz supply. The maximum current in the coil is:

Primary Alkyl halide \(\text{C}_4\text{H}_9\text{Br}\) (X) reacts with alcoholic \(\text{KOH}\) to give the compound (Y). Compound (Y) is reacted with \(\text{HBr}\)
to give (Z) which is an isomer of (X). When (X) is reacted with \(\text{Na/dry ether}\), it gives a compound (T), \(\text{C}_8\text{H}_{18}\), which is
different from the compound formed when n-butyl bromide is reacted with \(\text{Na/dry ether}\). The correct IUPAC name of (T) is:

The range of the function \(f(x)=\frac{1}{3-\sin 4 x}\) is: