Biomolecules

During the denaturation of proteins, which of these structure will remain intact?

Given below are two statements : One is labeled as Assertion A and the other is labelled as Reason R

Assertion A : Amylose is insoluble in water.           

Reason R: Amylose is a long linear molecules with more than 200 glucose units.

In the light of the above statements, choose the correct answer from the options given below

For the below given cyclic hemiacetal (X), the correct pyranose structure is:

In alanylglycylleucylalanylvaline, the number of peptide linkages is____________.

A polysaccharide 'X' on boiling with dil H₂SO₄ ate 393 K under 2-3 atm pressure yields 'Y'. 'Y' on treatment with bromine water give gluconic acid. 'X' contains b-glycosidic linkages only. Compound 'X' is:

With respect to the following reaction, consider the given statements:

(A) o-Nitroaniline and p-nitoraniline are the predominant products.

(B) p-Nitroaniline and m-nitroaniline are the predominant products.

(C) HNO₃ acts as an acid.

(D) H₂SO₄ acts as an acid.

Choose the correct option.

Two isomers (A) and (B) with molar mass 184 g/mol and elemental composition C, 52.2%; H. 4.9% and Br 42.9% gave benzoic acid and p-bromobenzoic acid respectively on oxidation with KMnO₄. Isomer 'A' is optically active and gives a pale yellow precipitate when warmed with alcoholic AgNO₃. Isomer 'A' and 'B' are respectively

Which statement is NOT correct for p- toluenesulphonyl chloride?

Given below are two statements:

Statement I: In 'Lassaigne's Test', when both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed.

Statement II: If both nitrogen and sulphur are present in an organic compound, then the excess of sodium used in sodium fusion will decompose the sodium thiocyanate formed to given NaCN and Na₂S.

In the light of the above statements, choose the most appropriate answer from the option given below