When a protein in its native form, is subjected to physical or chemical change, then its

Identify the optically active compounds from the following:
(A) \(\left[ Co ( en )_3\right]^{3+}\)
(B) trans \(-\left[ Co ( en )_2 Cl _2\right]^{+}\)
(C) cis- \(\left[ Co ( en )_2 Cl _2\right]^{+}\)
(D) \(\left[ Cr \left( NH _8\right)_5 Cl \right]\)
Choose the correct answer from the options given below:

Which of the following does not come under the category of colligative properties?

Collision theory postulates are :
A. Reactant molecules collide with each other.
B. The collisions must be of sufficient kinetic energy.
C. The collision in molecules with proper orientation.
D. Rate of reaction does not depend on temperature.
Choose the correct answer from the options given below :

If the solubility of the given gases in water decreases in the order of formaldehyde, methane, vinyl chloride, argon.
Match List-I with List-II.

List-I(Gas)	List-II(\((\mathrm{K})_{\mathbf{H}} / \mathrm{k}\) bar)
(A) Formaldehyde	(I) 40.3
(B) Vinyl Chloride	(II) 0.413
(C) Argon	(III) 1.83 x \(\mathrm{10}^{-5}\)
(D) Methane	(IV) 0.611

Choose the correct answer from the options given below:

If the molar conductivities at infinite dilution for \(\mathrm{CH}_3 \mathrm{COOK}, \mathrm{K}_2 \mathrm{SO}_4\) and \(\mathrm{H}_2 \mathrm{SO}_4\) are respectively, \(\mathrm{z}, \mathrm{y}\) and \(\times\left(\mathrm{S} \mathrm{cm}^2 \mathrm{~mol}^{-1}\right)\), the molar conductivity of \(\mathrm{CH}_3 \mathrm{COOH}\) at infinite dilution will be:

Werner was the first to describe the bonding features in coordination compounds. But his theory could not answer basic questions like :
(i) Why only certain elements possess the remarkable property of forming coordination compounds ?
(ii) Why the bonds in coordination compounds have directional properties?
(iii) Why coordination compounds have characteristics magnetic and optical properties ?
Many approaches have been put forth to explain the nature of bonding in coordination compounds viz. Valence Bond Theory (VBT), Crystal Field Theory (CFT), Ligand Field Theory (LFT) and Molecular Orbital Theory (MOT).
We shall focus our attention on elementary treatment of the application of VBT and CFT to coordination compounds.
According to this 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.
\(CoCl _3 \cdot 6 NH _3\) gives 3 moles of AgCl on reacting with \(AgNO _3\).
The correct formula for this compound is :

Match List-I with List-II:

List-I (Application)	List-II (Electromagnetic Waves)
(A) Used in radiography	(I) UV rays
(B) Detection by stimulating nerve endings of the human retina	(II) Microwaves
(C) Water purification	(III) Visible light
(D) Radar communication	(IV) X rays

Choose the correct answer from the options given below:

The electric field in a certain region is acting radially outward and is given by \(E=A r^2\). A charge contained in a sphere of radius 'a' centred at the origin of the field, will be given by

A circular loop of area \(0.02 m^2\) carrying a current of 5 A is held with its plane normal to a magnetic field of 0.2 T. The torque acting on the loop is

In a typical angiosperm, the mature embryo sac is:

Let \(X\) denotes the number of heads in a simultaneous toss of three coins, then \(P(0< X< 3)\) is

The maximum value of \(Z=3 x+4 y\) subject to the constraints: \(x+y \leq 1, x \geq 0, y \geq 0\) is: