The molecule having largest \(C - X\) bond length is

Read the passage carefully and answer the following questions
There are mainly four series of the transition metals, \(3 d\) series ( \(S c\) to Zn), \(4 d\) series (Y to Cd), 5d series (La and Hf to Hg) and 6d series which has \(A c\) and elements from Rf to Cn. The two series of the inner transition metals; \(4 f\) (Ce to Lu) and \(5 f\) (Th to Lr) are known as lanthanoids and actinoids respectively. Their chemical properties are transitional between those of \(s\) and p-block elements. The transition metals (with the exception of Zn, Cd and Hg) are very hard and have low volatility. Their melting and boiling points are high. Transition metals have incomplete d subshell either in neutral atom or in their ions. With partly filled d orbitals these elements exhibit certain characteristic properties such as display of a variety of oxidation states, formation of coloured ions and entering into complex formation with a variety of ligands. The transition metals and their compounds are known for their catalytic activity.
In series Sc to Zn, the lowest enthalpy of atomization is shown by

Answer the question on basis of passage given below :
Alcohols and phenol are formed when a hydrogen atom in a hydrocarbon, aliphatic and aromatic respectively, is replaced by \(\text{-OH}\) group. The substitution of a hydrogen atom in a hydrocarbon by an alkoxy or aryloxy group forms ethers. Alcohols and phenol consist of two part, an alkyl/aryl group and a hydroxyl group. The properties of alcohols and phenols are primarily due to the hydroxyl group. The nature of alkyl and aryl groups simply modify these properties. Alcohol react both as nucleophiles and electrophiles whereas in phenols, the reactions that take place on the aromatic ring are electrophilic subtitution reactions.
Aspirin is an acetylation product of :

Match List-I (biomolecule) with List-II (characteristics)

List-I (biomolecul)	List-II (characteristic)
(A) Lactose	(I) Menstrual cycle
(B) Glycine	(II) Bleeding gums
(C) Ascorbic acid	(III) Optically inactive
(D) Estradiol	(IV) Reducing sugar

Choose the correct answer from the options given below:

Identify " \(Y\) " in the following reaction:

Inner orbital complex among the following is :
(A) \(\text{[Co(NH}_3)_6\text{]}^{3+}\)
(B) \(\text{[CoF}_6\text{]}^{3-}\)
(C) \(\text{[Ni(CN)}_4\text{]}^{2-}\)
(D) \(\text{[MnCl}_6\text{]}^{3-}\)
(E) \(\text{[FeF}_6\text{]}^{3-}\)
Choose the correct answer from the options given below :

Reaction occurring at cathode is
\(HgO+H_2 O+2 e^{-} \rightarrow Hg+2 OH^{-}\)
Above reaction is found in :

Light of frequency \( 8.27 \times 10^{14} \text{ Hz} \) is incident on a metal surface. Electrons with maximum speed \( 6.6 \times 10^5 \text{ m/s} \) are ejected. The threshold frequency for photoemission of electrons will be (given \( h = 6.6 \times 10^{-34} \text{ Js} \), and mass of electron = \( m_e = 9 \times 10^{-31} \text{ kg} \)) :

In a 500 metres race, the ratio of speeds of two participants Meena and Kamal is 4: 5 respectively. If Meena has a start of 200 metres, find the distance by which Meena wins.

A system has two charges, \( q_A = 5 \times 10^{-7} \, \text{C} \) and \( q_B = -5 \times 10^{-7} \, \text{C} \), located at points \( A : (0, 0, -10 \, \text{cm}) \) and \( B : (0, 0, +10 \, \text{cm}) \), respectively. Which of the following are true?
(A) The electric field of dipole at point (0, 0, -15 cm) is \( 1.73 \times 10^6 \, \text{NC}^{-1} \)
(B) Electric field intensity is zero at origin (0, 0, 0)
(C) dipole moment \( (p) = 5 \times 10^{-8} \, \text{C-m} \)
(D) direction of the dipole moment is along the negative z- axis
Choose the correct answer from the options given below:

The correct sequence of steps to obtain gene of interest from pool of DNA is:
(A) Cutting of DNA using restriction endonuclease.
(B) Viewing the ethidium bromide stained gel under UV light.
(C) Loading of DNA in wells.
(D) Cutting and extraction of DNA piece from gel.
(E) Separation of DNA fragments according to their molecular size.
Choose the correct answer from the options given below:

Reduction of nitrobenzene gives

Read the passage and answer the question given below. When a host is exposed to antigens, which may be in the form of living or dead microbes or other proteins, antibodies are produced in the host body. This type of immunity is called active immunity. Active immunity is slow and takes time to give its full effective response. Injecting the microbes deliberately during immunisation or infectious organisms gaining access into body during natural infection induce active immunity. When antibodies are directly given to protect the body against foreign agents, it is called passive immunity.
which is passive immunisation?