The product in the following reaction is

Following is a property of p-type semiconductor

Which of the following vitamin is water soluble ?

Which of the following statements are correct?
A. Some hormones are steroids.
B. Hyper thyroidism is due to increased level of thyroxine
C. Hypothyroidism can be controlled by reducing ""lodised"" salt intake.
D. Glucagon tends to increase the glucose level in blood.
E. Insulin is released in response to rapid rise in blood glucose level.
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Colligative properties are applicable to:

Read the passage carefully and answer the questions
Sodium dichromate \(Na _2 Cr _2 O _7\) and Potassium dichromate \(K _2 Cr _2 O _7\) are strong oxidizing agents; in acidic solution, its oxidising action can be represented as follows :
\(Cr _2 O _7^{2-}+14 H ^{+}+6 e^{-} \rightarrow 2 Cr ^{3+}+7 H _2 O \left( E ^{\circ}=1.33 V\right)\)
The chromates and dichromates are interconvertible in aqueous solution depending upon pH of the solution.
The chromate ion is tetrahedral whereas the dichromate ion consists of two tetrahedra sharing one corner with \(Cr - O - Cr\) bond angle of \(126^{\circ}\)
Potassium permanganate is prepared by fusion of \(MnO _2\) with an alkali metal hydroxide and an oxidising agent like \(KNO _3\).
This produces the dark green \(K _2 MnO _4\) which disproportionates in a neutral or acidic solution to give permanganate. It is a strong oxidizing agent. Hydrogen ion concentration of the solution plays
an important part in the reduction of permanganate to manganate, manganese dioxide and manganese(II) salt.
Potassium permanganate forms dark purple (almost black) crystals which are isostructural with those of \(KClO _4\).
The salt is not very soluble in water \((6.4 g / 100 g\) of water at 293 K ), but when heated it decomposes at 513 K .
Alkaline/neutral \(KMnO _4\) oxidizes iodide ( \(I ^{-}\)) ion to

Identify the carbohydrate which is not a polysaccharide

Identify the correct pathway for transport of sperms?
(A) Rete testis
(B) Vasa efferentia
(C) Epididymis
(D) Vas deferens
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The rate of biomass production is called productivity. It is expressed in terms of -

The half life of a radioactive substance is 20 s. The time taken for its sample to decay \( \frac{7}{8} \)th of the initial value is:

What is the source of nitrogen in Gabriel synthesis of primary aliphatic amines?

If \(x=4 t\) and \(y=\frac{4}{t}\), then \(\frac{d^2 y}{d x^2}\) is

The direction ratios of the line perpendicular to the lines \(\frac{x-5}{2}=\frac{y+11}{-3}=\frac{z+3}{1}\) and \(\frac{x-7}{1}=\frac{y+2}{2}=\frac{z-4}{-2}\) are proportional to :