Chemistry Question Bank

Assertion: Hydrolysis of sucrose is known as inversion of cane sugar. Reason: Sucrose is a disaccharide.

Assertion: Glucose does not give 2, 4- DNP test. Reason: Glucose exists in cyclic hemiacetal form.

Assertion: In sucrose two sugar units are joined by 1, 2-glycosidic bond Reason: It joins C1 of -glucose and C2 of -fructose by glycosidic bond.

Assertion (A) Glucose gives reddish brown precipitate with Fehling solution. Reason (R) Reaction of glucose with Fehling solution gives CuO and gluconic acid.

Assertion (A) Deoxyribose, C5H10O4 is not a carbohydrate. Reason: (R) Carbohydrates are hydrates of carbon so compounds which follow Cx(H2O)y formula are carbohydrates.

The hormone which controls the processes like burning of fats, proteins and carbohydrates to liberate energy in the body is

Which one of the following is a peptide hormone ?

The cell membranes are mainly composed of

Which one of the following vitamins is water soluble?

The human body does not produce

During the process of digestion, the proteins present in food materials are hydrolysed to amino acids. The two enzymes involved in the process are respectively

Which functional group participates in disulphide bond formation in proteins ?

Which statement is incorrect about peptide bond?

The pair in which both species have iron is

Which one of the following statements is true for protein synthesis (translation) ?

Methyl –D-glucoside and methyl –D- glucoside are

The beta and alpha glucose have different specific rotations. When either is dissolved in water, their rotation changes until the same fixed value results. This is called.

Assertion: Sucrose is a non-reducing sugar. Reason: It has glycosidic linkage.

Sucrose when boiled with dil. HCl produce

Glycolysis is

Sucrose in water is dextrorotatory, []D = + 66.4° when boiled with dil. HCl, the solution becomes laevo-rotatory, []D = – 39.9°. In this process the sucrose breaks into

Assertion: Proteins on hydrolysis produce amino acids. Reason: Amino acids contain –NH2 and –COOH groups.

Assertion: Alpha -amino acids exist as internal salt in solution as they have amino and carboxylic acid groups in near vicinity. Reason: H ion given by carboxylic group (– COOH) is captured by amino group (–NH2) havin…

Assertion: DNA molecules and all RNA molecules are found in the nucleus of a cell. Reason: On heating, the enzymes do not lose their specific activity.

Assertion: Activity of an enzyme is pH-dependent. Reason: Change in pH affects the solubility of the enzyme in water.