Aldehydes and ketones undergo

Decreasing \(Pk_b\) value of following in solution :
(A) \(CH_3CH_2NH_2\)
(B) \((CH_3CH_2)_2NH\)
(C) \((CH_3CH_2)_3N\)
(D) Aniline (Structure shown)
(E) 4-Methoxyaniline (Structure shown)
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The molality of solution obtained by dissolving 1.5 g of ethanoic acid \(CH _3 COOH\) in \(2 5 ~ g\) of benzene is :

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 - I with List - II.

List-I	List - II
(A) Ranitidine	(I) Tranquilizer
(B) Furacine	(II) Antibiotic
(C) Phenelzine	(III) Antihistamine
(D) Chloramphenicol	(IV) Antiseptic

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Answer the question on basis of passage given below :
Vitamins represent a group of organic compounds which are needed in small amount for the healthy growth and maintenance of our body. These are not synthesised by the body and are supplied in the diet. The deficiency of vitamins can be supplemented with medicines.
The pernicious anaemia disease is associated with the deficiency of :

Answer the question on basis of passage given below :
Lyophobic sols like those of metals (Au, Ag, etc) are unstable and are easily precipitated by addition of electrolytes. However, it is observed that the addition of certain lyophilic colloids like gums, soaps, gelatine, etc. to lyophobic colloids (like a metal sol) render lyophobic colloids difficult to coagulate by the addition of electrolytes. The process is known as 'protection' and the lyophilic colloids are termed as Protective colloids. It is believed that the protective action of the lyophilic colloids is due to the covering up of the particles of the lyophobic colloid by those of the lyophilic colloid.
Evidently, smaller the gold number of a protective colloid, the greater is its protective action. In which of the following sols, the colloidal particles will move towards the cathode during electrophoresis?

Inversion of cane sugar is a pseudo first order reaction
\(C _{12} H _{22} O _{11}+ H _2 O \xrightarrow{ H ^{+}} C _6 H _{12} O _6+ C _6 H _{12} O _6\)
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Which of the following is an indicator of industrial pollution ?

Match List-l with List-II

List-l (Male reproductive parts)	List-II (Functions)
(A) Leydig Cells	(I) Nutrition
(B) Hypothalamus	(II) FSH
(C) Sertoli cells	(III) Androgen
(D) Anterior pituitary	(IV) GnRH

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A nucleus \({ }_{92}^{238} X\) emits one alpha particle and then one beta particle (electron). The product nucleus will have

A coil having area A is placed in a magnetic field. The field is perpendicular to the plane of the coil. When the magnetic field changes from \( B_0 \) to \( 4B_0 \) in a time interval t, the magnitude of emf induced in the coil will be :

If the forward voltage in a p-n junction diode is increased, the width of the depletion region :