Fructose contains functional group-
(a) Aldehyde
(b) Ketone
(c) Carboxylic acid
(d) primary amine
(a) Aldehyde
(b) Ketone
(c) Carboxylic acid
(d) primary amine
(b) Ketone
The anomeric carbon in D(+) glucose is –
(a) C-1 carbon
(b) C-2 carbon
(c) C-5 carbon
(d) C-6 carbon
The functional group which is found in amino acid is-
(a)-COOH
(b) -\(NH_2\)
(c) -\(CH_3\)
(d) both (a) and (b)
The letter ‘D’ in carbohydrates signifies-
(a) dextrorotatory
(b) configuration
(c) diamagnetic nature
(d) mode of synthesis
Which of the following factors is not responsible for the denaturation of proteins?
(a) Heat
(b) Charge
(c) pH change
(d) Organic solvents
RNA and DNA are chiral molecules. Their chirality is due to :
(a) Chiral bases
(b) Chiral phosphate ester units
(c) D-sugar component
(d) L-sugar component.
The reason for double helical structure of DNA is operation of-
(a) electrostatic attractions
(b) dipole-dipole interaction
(c) van der Waal’s forces
(d) hydrogen bonding
Although Zirconium belongs to 4d transition series and Hafnium to 5d transition series even then they show similar physical and chemical properties because
(a) both belong to d-block.
(b) both have same number of electrons.
(c) both have similar atomic radius.
(d) both belong to the same group of the periodic table.
Which of the following aqueous solutions containing 10 g of solute in each case, has highest m.p.?
(a) NaCl solution
(b) KCl solution
(c) sugar solution
(d) glucose solution
Benzene reacts with \(CH_3\)Cl in the presence of anhydrous \(AlCl_3\) to form:
(a) chlorobenzene
(b) benzylchloride
(c) xylene
(d) toluene
Solid A is very hard electrical insulator in solid as well as in molten state and melts at an extremely high temperature. What type of solid is it?
(A) Ionic solid
(B) Molecular solid
(C) Covalent solid
(D) Metallic solid
The decreasing order of boiling point of the following alcohols is
(a) 3-methylbuan-2-ol > 2-methylbutan-2-ol > pentan-1-ol.
(b) Pentan-1-ol > 3-methylbutan-2-ol > 2-methylbutan-2-ol.
(c) 2-methylbutan-2-ol > 3-methylbutan-2-ol > pentan-1-ol.
(d) 2-methylbutan-2-ol > pental-1-ol > 3-methylbutan-2-ol.
The reason for double helical structure of DNA is operation of-
(a) electrostatic attractions
(b) dipole-dipole interaction
(c) van der Waal’s forces
(d) hydrogen bonding
One mole of ethyl acetate on treatment with an excess of \(LiAlH_4\) in dry ether and subsequent acidification produces
(a) 1 mole acetic acid + 1 mole ethyl alcohol.
(b) 1 mole ethyl alcohol + 1 mole methyl alcohol.
(c) 2 moles of ethyl alcohol.
(d) 1 mole of 2-butanol.