50 g of ethylene glycol \(C_2H_6O_2\) is mixed with 900 g of water. The freezing point of the solution will be\(\left(K_f\right.\) of water \(\left.=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right)\)

Which of the following reactions is used to prepare Haloarenes?

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According to Valence Bond theory, the metal atom or ion under the influence of ligands can use its (n - 1)d, ns, np or ns, np, nd orbitals for hybridisation to yield a set of equivalent orbitals of definite geometry such as octahedral, tetrahedral, square planar and so on. These hybridised orbitals are allowed to overlap with ligand orbitals that can donate electron pairs for bonding. While the VB theory, to a larger extent, explains the formation, structures and magnetic behaviour of coordination compounds, it suffers from the many shortcomings. 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. 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 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 represents the correct pair?

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Aldehydes are generally more reactive than ketones in nucleophilic addition reactions due to steric and electronic reasons. Sterically, the presence of two relatively large substituents in ketones hinders the approach of nucleophile to carbonyl carbon more than aldehydes having only one such substituent Electronically aldehydes are more reactive than ketones because two alkyl groups reduce the elctrophilicity of the carbonyl more effectively than in former.
Write the reaction sequence when phthalic acid reacts with ammonia.


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Match List I with List II

LIST I	LIST II
A. Decomposition of \(\text{H}_2\text{O}_2\)	I. Second order reaction
B. Decomposition of \(\text{H}_2\) in the presence of Hg and light	II. Pseudo first order reaction
C. Hydrolysis of ester by alkali	III. First order reaction
D. Hydrolysis of ester in excess of acid	IV. Photosensitisation

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Transition metals form a large number of complexes or coordination compounds in which the metal atoms are bound to a number of anions or neutral molecules. The valence bond theory explain the formation, magnetic behaviour and geometrical shapes while the crystal field theory explains the effect of different crystal fields on the degeneracy of d-orbitals energies of the central metal atom/ion. This provides for the quantitative estimation of orbital separation energies, magnetic moments and spectral and stability parameters.
The compound \(\left[ Pt \left( NH _3\right)_2 Cl _2\right]\) exhibits

An aromatic compound 'A' of molecular formula C7H7ON undergoes a series of reaction as :
C7H7ON $\xrightarrow{Br_2/KOH}$ B $\xrightarrow{NaNO_2+HCl}$ C $\xrightarrow{CH_3CH_2OH}$ D
A
Identify compound D :

Match List-l with List-II

List-l	List-II
(A) Bt Cotton	(I) Functional ADA CDNA
(B) Method of Cellular defense	(II) 'A' peptide
(C) Genetically engineered insulin	(III) RNAi
(D) Gene therapy	(IV) Insecticidal protein

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Copying genetic information from one strand of DNA into mRNA is:

In the reaction \(\left( CH _3\right)_3 C - O - CH _3+ HI \rightarrow\) Products, \(CH _3 OH\) and \(\left( CH _3\right)_3 CCl\) are the products and not \(CH _3 I\) and \(\left( CH _3\right)_3 COH\). It is because:
(A) In step 2 of the reaction, the departure of leaving group ( \(HO - CH _3\) ) creates less stable carbocation.
(B) In step 2 of the reaction, the departure of leaving group ( \(HO - CH _3\) ) creates more stable carbocation.
(C) The reaction follows an SN1 mechanism.
(D) The reaction follows SN2 mechanism.
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Which of the followings belong to false fruit category?
(A) Apple
(B) Cashew
(C) Strawberry
(D) Orange
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Wildlife safari parks are example of-

Which of the following statements are correct?
(A) the mid-point between the two similar and equal point charges located nearby, is called neutral point.
(B) There are maximum number of field lines at the neutral point.
(C) The work done to bring any positive charge from infinity to a point in an electric field is called the electric potential at that point.
(D) The work done to move a charge from one point to another point on the equipotential surface will be zero.
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