Which of the following statements with reference to a solution are correct?
(A) the molarity of the solution changes with the change in the temperature.
(B) the volume of the solution changes with the change in the temperature.
(C) the molality of the solution changes with the change in the temperature.
(D) the normality of the solution changes with the change in the temperature.
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p-block elements are placed in groups 13 to 18 of the periodic table. Group 15 is nitrogen family. Nitrogen makes various compounds like \(NH _3, HNO _3, N_2 O , NO _2\) etc. Phosphorus exists in the form of white and red phosphorus. White phosphorus glows in dark. \(PH _3\) gas is used as smoke screen. Group 16 is called oxygen family. Dry air contains \(21\% O_2\) gas by volume. Combined sulphur exists as sulphates such as gypsum, epsome salt, baryte etc. The allotropic forms of sulphur are Rhombic and monoclinic sulphur. \(S_2\) is paramagnetic like \(O_2\) and it stable at high temperature. Group 17 is Halogen family. \(F_2\) is highly reactive, \(C l_2\) is greenish yellow gas. Both \(S O_2\) and \(C l_2\) are used for bleaching. Group 18 is Noble gas family but some noble gases also form compounds.
Complete hydrolysis of \(XeF _6\) gives HF and \(XeO _3\) as main products.
The product of complete hydrolysis of \(XeF _6\) in the following reaction is
\(XeF _6+ H _2 O \rightarrow ?+ HF\)

Which of the following haloalkanes reacts with aqueous \(\text{KOH}\) most easily ?

Read the passage carefully and answer the Questions
A homogeneous mixture of two or more than two components has uniform composition and properties. The binary solutions have two components, which may be solid, liquid or gas. The resultant solution has a larger amount of solvent and a smaller amount of solute. The amount of solute in a given amount of solvent decides the concentration of the resulting solution. The concentration can be expressed in various ways, like molarity, molality, normality and mole fraction. The molality of a 1 liter aqueous solution of \(93 \backslash \% H _2 SO _4\) (mass/volume) is:
(Given: density of the solution \(=1.84 g mL ^{-1}\), molar mass of \(\left.H _2 SO _4=98 g mol ^{-1}\right)\)

Arrange the following solutions in increasing order of their concentration.
(A) \(7.5 \text{ g } KCl\) (74.5 g \(mol^{-1}\)) in 100 mL solution
(B) \(3 \text{ g } Urea\) (60 g \(mol^{-1}\)) in 1 L solution
(C) \(3.6 \text{ g } glucose\) (180 g \(mol^{-1}\)) in 100 mL solution
(D) \(4 \text{ g } NaOH\) (40 g \(mol^{-1}\)) in 1 L solution
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Partial Roasting of chalcopyrite produces :

Which of the following methyl halide will have the highest value of dipole moment?

Answer the question on basis of passage given below :
Look at the following chemical reactions and answer the following question :
(A) \(C_7H_8 \xrightarrow{\text{Conc. HNO}_3, 0^\circ C}
(B) \xrightarrow{Sn/HCl}
(C) \xrightarrow{NaNO_2/H_3O^+}
(D) \xrightarrow{H_2O, Heat}(E)\)
(E) \(CH_3I \xrightarrow{KMnO_4/H^+}
(F) \xrightarrow{H_3O^+}
(G) \xrightarrow{NaOH} (H)\)
Which are water soluble ?

The intervals for which \(f(x)=x^4-2 x^2\) is increasing are:

The unit of molar conductivity is

Match List-I with List-II

List-I	List-II
(A) \(f(x)=|x|+1\)	(I) Not differentiable at \(x=3\) only
(B) \(f(x)=|x-3|\)	(II) Not differentiable at \(x=-3\) only
(C) \(f(x)=|x+3|\)	(III) Not differentiable at \(x=3\), \(-3\) only
(D) \(f(x)=\left|x^2-9\right|\)	(IV) Not differentiable at \(x=0\) only

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What is the oxidation number of the metal of \([Co(H_2O)(CN)(ox)_2]^{2-}\) coordination entity?

Match List-I with List-II

List-I	List-II
(A) Electric potential V due to a single charge	(I) \(\propto r^0\)
(B) Electric flux due to a positive point charge through sphere of radius r	(II) \(\propto \frac{1}{r^2}\)
(C) Electric intensity E due to a point charge	(III) \(\propto \frac{1}{r}\)
(D) Electric intensity E due to dipole	(IV) \(\propto \frac{1}{r^3}\)

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