Germanium is a semiconductor because:

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The osmotic pressure is one of the four colligative properties which depends on the number of particles of solute in the solution, irrespective of their nature. The osmotic pressure is equal to the product of concentration, gas constant and temperature. It is the most commonly used property for the determination of the molar mass of biomolecules. In many situations, the molecules get dissociated or associated when they are dissolved in a solvent, thereby changing the number of molecules in the solution. As a result, an abnormal molecular mass is obtained. The extent of dissociation or association is given by van't Hoff factor (i), which is the ratio of normal molar mass to abnormal molar mass. It is related with the degree of association or ionization. The introduction of van't Hoff factor in the osmotic pressure equation modifies the equation.
\[Itext\{Osmotic pressure\} ((Pi) \text\{of a solution does not depend upon\}\}]

With reference to D-glucose, which of the following cannot be explained by its open chain structure?
(A) D-Glucose does not give Schiff's test.
(B) The pentaacetate of D-glucose does not react with hydroxylamine.
(C) Glucose is found to exist in two different crystalline forms.
(D) D-glucose reacts with mild oxidizing agents like Br2-H2O and forms gluconic acid.
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In a thermite process, the reducing agent is

Which one of the following statements is not correct
A. D (-) fructose exists in furanose structure
B. D (+) glucose exists in pyranose structure
C. In sucrose the two monosaccharides are held together by peptide linkage
D. Maltose is a reducing sugar
E. Pentaacetate of glucose does not react with hydroxylamine
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Match List-I with List-II

LIST – I (Electrolytes)	LIST – II (Examples)
(A) Non-electrolyte	(I) Sucrose, urea
(B) Binary electrolyte	(II) KCl, \(CH _3 COOH\)
(C) Quaternary electrolytes	(III) \(H _2 SO _4\) \(BaCl _2\)
(D) Ternary electrolyte	(IV) \(AlCl _3\) \(K _3 PO _4\)

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Biomolecules are the organic compounds present as an essential constituents of living organisms in different cells. molecules are generally termed as macromolecules, which are carbohydrates, enzymes, nucleic acids, amino acids and proteins The etc. Carbohydrates are classified as sugars and non-sugars include sucrose, glucose, fructose, starch and cellulose. Enzymes are coordinated with various chemical reactions in nucleic acid. Nucleic acids are found in living organisms made up of proteins and atural polymers. Two types that are generally found in biological systems are DNA and RNA nucleic acid. Amino acids bifunctional groups of carboxyl and amino groups. Proteins are a class of biologically important compounds. They are crucial are to virtually all processes in living systems. Some of them are hormones, which serve as chemical messengers that coordinate certain biochemical activities.
The disaccharide present in milk is known as

Match List I with List - II.

List - I	List - II
(A) Interference experiment	(I) Maxwell
(B) Electromagnetic theory of light	(II) Christian Huygens
(C) Wave theory of light	(III) Isaac Newton
(D) Particle theory of light	(IV) Thomas Young

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Match List I with List II

LIST I	LIST II
A. Decomposition of \(\text{H}_2\text{O}_2\)	I. Second order reaction
B. Decomposition of \(\text{H}_2\) in the presence of Hg and light	II. Pseudo first order reaction
C. Hydrolysis of ester by alkali	III. First order reaction
D. Hydrolysis of ester in excess of acid	IV. Photosensitisation

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Rakshita plans to buy a house for Rs. 1,00,00,000 with down payment of 20% of the value of the house paid by her mother. Rest of the amount she wishes to pay in 25 years by equal monthly instalments at an interest of 9% per annum compounded monthly Then the EMI paid by her is \(\left(\right.\) Given \(\left.(1.0075)^{300}=9\right)\) :

The solubility of a gas in a liquid

Which of the following statements are correct?
(A) \(\tan ^{-1} x+\tan ^{-1} y=\tan ^{-1}\left(\frac{x+y}{1-x y}\right), x y<1\)
(B) \(\tan ^{-1} x+\tan ^{-1} y=\pi+\tan ^{-1}\left(\frac{x+y}{1-x y}\right), x y>1\)
(C) \(\sin ^{-1} x+\cos ^{-1} x=\frac{\pi}{2}, x \in(-1,1)\)
(D) \(\tan ^{-1} x+\cot ^{-1} x=\frac{\pi}{2}, x \in R\)
(E) \(\cos ^{-1}(-x)=-\cos ^{-1} x, x \in[-1,1]\)
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Arrange the stages of embryo development in a dicot plant.
(A) Heart shaped embryo
(B) Globular embryo
(C) Zygote
(D) Mature embryo
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