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
Choose the correct answer from the options given below:

"In the extraction of Al metal from Bauxite ore, the correct sequence of various processes involved is:
A. Heating the ore to remove volatile impurities.
B. Electrolysis of molten ore-mixture.
C. Leaching of alumina with concentrated NaOH.
D. Grading and crushing of big ore particles.
E. Mixing alumina with \(\text{CaF}_2\) or \(\text{Na}_3\text{AlF}_6\).
Choose the correct answer from the options given below:"

The rate of a gaseous reaction becomes half when the volume of the vessel is doubled. The order of the reaction is

Interstitial compounds are formed when small atoms like H, C, or N are trapped in the crystal lattice of metal. Which of the following statements are true about the interstitial compounds?
(A) Interstitial compounds have higher melting points than the pure metals.
(B) Interstitial compounds are very soft.
(C) Interstitial compounds are very reactive.
(D) Interstitial compounds retain metallic conductivity.
Choose the correct answer from the options given below:

Match the properties given in List-l with the metals given in List-ll

List-l (Property)	List-II (Metal)
(A) An element which can show +8 oxidation state	(I) V
(B) 3d block element that can show upto +7 oxidation state	(II) Cr
(C) 3d block element with the highest melting point	(III) Os
(D) 3d block element with the highest enthalpy of atomization	(IV) Mn

Choose the correct answer from the options given below:

Identify the incorrect statement about the \(H _2- O _2\) fuel cell from the following:

Read the passage carefully and answer the Questions
Alcohols and phenols are obtained when a hydrogen atom in aliphatic and aromatic hydrocarbons respectively, is replaced by \(OH\) group. These compounds find wide applications in industry as well as in our daily life. You may notice that ordinary spirit is used for polishing wooden furniture which is chiefly a compound containing hydroxyl group. An alcohol contains one or more hydroxyl \((OH)\) group(s) directly attached to carbon atom(s), of an aliphatic system \((CH_3OH)\) while a phenol contains \(OH\) group(s) directly attached to carbon atom(s) of an aromatic system \((C_6H_5OH)\). Alcohols are prepared by the hydration of alkenes, fermentation of glucose, and reduction of carbonyl compounds. Alcohols produce alkenes upon dehydration whereas alkenes on acid catalyzed hydration convert into alcohols.
An alkyl halide can be converted into alcohol through:

The capacity of a parallel plate capacitor does not depend on :

\(\left[\begin{array}{cc}2 x+1 & 4 x \\ y+3 & 2 y-5\end{array}\right]=\left[\begin{array}{cc}x+2 & 4 \\ 7 & 3\end{array}\right]\)

If the interval in which the function \(f(x)=4 x^3-6 x^2-72 x+30\) is strictly decreasing, is \(( a , b )\) then \(a + b\) is equal to

What mode of propagation is used for the Ultra high frequency range?

The reverse biasing in a p-n junction diode

The maximum value of \(f(x)=\left(\frac{1}{x}\right)^x\) is