The number of unpaired electrons in gaseous ions \(Mn ^{3+}, V ^{3+}, Cr ^{3+}\) are respectively:

Match List-l with List-ll:

List-l (Items)	List-ll (Properties)
(A) Primary batteries	(I) Pollution free energy converter.
(B) Secondary batteries	(II) Takes place in the presence of air, moisture and H+
(C) Fuel cells	(III)Large number of charging/discharging and long-lasting
(D) Corrosion	(IV) Mercury cell is used in hearing aids

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The coordination compounds are of great importance. These compounds are widely present in the mineral, plants and animal world and are known to play many important functions in the area of analytical chemistry, metallurgy, biological systems, industry and medicine. For example, coordination compounds find use in many qualitative and quantitative chemical analysis. Some important metal extraction and purification make use of complex formation. Hardness of water can be estimated by stable complex formation of Ca\(^{2+}\) and Mg\(^{2+}\)
Impure nickel is converted to which of its complex to be decomposed to yield pure nickel?

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The noble gases He to Rn have close shell configuration and are monoatomic gases under normal conditions. Though mostly unreactive, but direct reaction of Xe with \(F_2\) leads to a series of compounds with Xe oxidation numbers \(+2,+4\) and +6 . When certain compounds like phenol and quinol are crystallised in the presence of noble gas such as \(Ar , Kr\) and Xe a category of compound called clathrates are formed. In these the noble gas atoms are trapped in the cavities of the crystal lattices. The compounds which crystallise are known as hosts (H) while the noble gas atoms are called guests ( \(G\) ). The general formula of a clathrate compound is \(n H m G\), where \(n\) is the number of host molecules and m is the number of atoms a molecule of guest.
In what molar ratio must Xe and \(F_2\) be taken to give \(XeF _4\) ?

Which of the following compounds will not give azo coupling reaction with benzene diazonium chloride?

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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.
Glucose dissolved in water and ethanol dissolved in water are examples of:

The correct order of increasing reactivity of C-X bond towards nucleophilic substitution reaction (SN1) in the following compounds is
(A) Chlorobenzene
(B) Benzyl Chloride
(C) Tertiary Butyl Chloride
(D) 1-Chlorobutane
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Darwin's finches are the example of :

According to Joule's law of heating, the rate of heat produced in a resistor is
(A) directly proportional to the current for the given resistance
(B) directly proportional to the square of the current for the given resistance
(C) directly proportional to the resistance for a given value of current
(D) inversely proportional to the resistance for a given voltage
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For the LPP :
Maximise \(z=4 x+y\)
subject to constraints
\(x+y \leq 50, \quad 3 x+y \leq 90, \quad x \geq 0, y \geq 0\) the maximum value of \(z\) is :

The Mediterranean orchid Ophrys employs 'sexual deceit mechanism to get pollination done by

Which of the following vitamin is water soluble ?

The atomic hydrogen emits a line spectrum consisting of different series. The ratio of frequencies of the first line in Lyman and Balmer series is :