A solution of CuSO _4 is electrolysed for 10 minutes using a current of amperes. ( 1 mol of \(Cu =63 g\) ). How much copper is deposited at cathode
\(1 F=96487 C mol^{-1}\)

The decomposition of \(NH_3\) on platinum surface is a zero order reaction. The rates of production of \(N_2\) and \(H_2\) respectively are : (in \(mol^{-1}Ls^{-1}\)) Given that \(2.5 \times 10^{-4}\text{ mol}^{-1}\text{L s}^{-1}\) is the rate of reaction.

When aniline is reacted with benzoyl chloride, the correct product is

A divalent ion of 'V' (Atomic no. - 23) in aqueous solution is :

Half life of the zero order reaction is:

Which of the following compounds can be used as antifreeze in automobile radiators?

Which out of the following will show Hoffmann Bromamide Degradation reaction.

X-rays of wavelength \( = 1\text{\AA} \) have frequency

At one place on earth, the resultant magnetic field is 0.25 G and the angle of dip is 45°. The horizontal component of earth's magnetic field will be

Read the following passage carefully and answer the given questions.
Immune System in the Body
The human immune system consists of lymphoid organs, tissues, cells and soluble molecules like antibodies. The primary lymphoid organs are bone marrow and thymus where immature lymphocytes differentiate into antigen-sensitive lymphocytes. After maturation the lymphocytes migrate to secondary lymphoid organs like spleen, lymph nodes, tonsils, Peyer's patches of small intestine and appendix. The secondary lymphoid organs provide the sites for interaction of lymphocytes with the antigen, which then proliferate to become effector cells. The bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced. Each antibody molecule has four peptide chains, two small called light chains and two longer called heavy chains. Hence, an antibody is represented as H2L2. Different types of antibodies are produced in our body. IgA, IgM, IgE, IgG are some of them. Techniques like radiography (use of X-rays), CT (computed tomography) and MRI (magnetic resonance imaging) are very useful to detect cancers of the internal organs.
Maturation of lymphocytes takes place in:

Match List-I with List-II

List-I	List-II
(A) Electrical permittivity	(I) \(N m^2 C^{-1}\)
(B) Electric flux	(II) \(N^{-1} m^{-2} C^2\)
(C) Electric field	(III) \(Cm ^{-2}\)
(D) Surface charge density	(IV) \(N C^{-1}\)

Choose the correct answer from the options given below:

The interval in which where the function \(f(x)=x^3-3 x^2+4 x+1, x \in R\) is increasing, is:

Read the passage carefully and answer the given questions.
Recombinant DNA Technology Asexual reproduction preserves the genetic information, while sexual reproduction permits variation. Traditional hybridization procedures used in plants and animals breeding very often lead to inclusion and multiplication of undesirable genes along with the desired genes. The techniques of genetic engineering, which include creation of recombinant DNA, use of gene cloning and gene transfer, overcome this limitation and allow us to isolate and introduce only one or a set of desirable genes without introducing genes into the target organism.
In Recombinant DNA Technology, what is the role of the "selectable marker gene"?