A first order reaction requires 6.96 months for the concentration of reactant A to be reduced to 25% of its original value. The half-life of the reaction is:
(Given \(\text{log } 2 = 0.3010\))

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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.
Molarity of a solution containing 8 grams \(NaOH\) in one liter of water is:

The solubility of the gas in a liquid :
(A) Increases with increase in pressure
(B) Decreases with increase in pressure
(C) Increases with increase in temperature
(D) Decreases with increase in temperature
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Mischmetall consists of

Match List I with List II.

List-I	List-II
A. \(KMnO _4\)	I. Orange
B. \(K _2 Cr _2 O _7\)	II. Green
C. \(K _2 CrO _4\)	III. Yellow
D. \(K _2 MnO _4\)	IV. Purple

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The crystal field theory (CFT) is an electrostatic model which considers the metal-ligand bond to be ionic arising purely from electrostatic interactions between the metal ion and the ligand. Ligands are treated as point charges in case of anions or dipoles in case of neutral molecules. The five d orbitals in an isolated gaseous metal atom/ion have same energy, i.e., they are degenerate. This degeneracy is maintained if a spherically symmetrical field of negative charges surrounds the metal atom/ion. However, when this negative field is due to ligands (either anions or the negative ends of dipolar molecules like NH3 and H2O) in a complex, it becomes asymmetrical and the degeneracy of the d orbitals is lifted. It results in splitting of the d orbitals. The pattern of splitting depends upon the nature of the crystal field.
Which of the following pairs exists as high-spin, tetrahedral complexes?

Select the correct statements for Hoffmann bromamide degradation reaction:
(A) Used to prepare primary amines
(B) Amides are treated with bromine in aqueous solution.
(C) NaOH is used in this reaction.
(D) HCI is used in this reaction
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Match List I with List II.

LIST I	LIST II
(A) Human skin colour	(I) Incomplete dominance
(B) ABO blood groups	(II) Polygenic inheritance
(C) Snapdragon	(III) Parthenogenesis
(D) Male honeybee	(IV) Multiple allelism

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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\(^{2+}\)
From which coordination complex, gold is recovered by reducing this complex with Zn ?

Let the degree and order of the differential equation \(2 x^3 \frac{d y}{d x}-5\left(\frac{d^2 y}{d x^2}\right)^2=6\left(\frac{d y}{d x}\right)^3\) be \(m\) and \(n\) respectively. Then
(A) \(m=2\)
(B) \(n=3\)
(C) \(m=3\)
(D) \(m n=4\)

Two polaroids \( P_1 \) and \( P_2 \) are set in crossed positions. A third polaroid \( P_3 \) is placed between the two making an angle \( \alpha \) with the axis passing from the first polaroid \( P_1 \). In what orientation will the transmitted intensity be maximum?

Which of the following statements is not applicable to chemisorption?
(A) It is independent of temperature
(B) It is highly specific
(C) It is slow
(D) It is irreversible
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Sexual stages of Plasmodium which develop in human RBCs are known as:-