Practice Questions

Q58.Which of the following is a polyamide? JEE Main 2012 (19 May Online) JEE Main Previous Year Paper (1) Teflon (2) Orlon (3) Nylon (4) Terylene

Q58.Synthetic polymer bakelite can be prepared from following compounds (1) Styrene and vinyl chloride (2) Acrylonitrile and vinyl chloride (3) Adipic acid and ethylene glycol (4) Phenol and formaldehyde

Q58.Bakelite is obtained from phenol by reacting it with (1) Acetaldehyde (2) Chlorobenzene (3) Formaldehyde (4) Acetamide

Q59.Sulphonamides act as (1) Antiseptic (2) Analgesic (3) Antimicrobials (4) Antipyretic

Q59.Aspirin is known as: (1) Acetyl salicylic acid (2) Phenyl salicylate (3) Acetyl salicylate (4) Methyl salicylic acid JEE Main 2012 (Offline) JEE Main Previous Year Paper

Q59.Which one of the following compounds is an antifertility drug? (1) Aspirin (2) Chloromycetin (3) Saheli (4) Penicillin

Q59.Chemically heroin is (1) morphine monoacetate (2) morphine dibenzoate (3) morphine diacetate (4) morphine monobenzoate

Q60.Which of the following is a non-reducing sugar? (1) Lactose (2) Fructose (3) Sucrose (4) Maltose

Q60.All of the following statements apply to proteins except (1) Proteins generally have no definite melting point (2) Proteins contain the grouping - CONH− (3) Proteins have high molecular weight (4) Proteins can only contain the elements C, H, O and N.

Q60.Amylopectin is a polymer of (1) α −D− glucose (2) amino acid (3) β −D− glucose (4) amylase.

Q60.Which one of the following statements is correct? (1) All amino acids except lysine are optically active (2) All amino acids are optically active (3) All amino acids except glycine are optically (4) All amino acids except glutamic acid are active optically active z lies

Q31.A 5.2 molal aqueous solution of methyl alcohol, CH3OH, is supplied. What is the mole fraction of methyl alcohol in the solution? (1) 0.190 (2) 0.086 (3) 0.050 (4) 0.100

Q34.Which one of the following order represents the correct sequence of the increasing basic nature of the given oxides ? (1) MgO < K2O < Al2O3 < Na2O (2) Na2O < K2O < MgO < Al2O3 (3) K2O < Na2O < Al2O3 < MgO (4) Al2O3 < MgO < Na2O < K2O

Q36.Among the following the maximum covalent character is shown by the compound: (1) SnCl2 (2) AlCl3 (3) MgCl2 (4) FeCl2

Q42.The strongest acid amongst the following compounds is : (1) HCOOH (2) CH3CH2CH(Cl)CO2H (3) ClCH2CH2CH2COOH (4) CH3COOH

Q44.Identify the compound that exhibits tautomerism. (1) Lactic acid (2) 2- Butene (3) Phenol (4) None of these

Q46.In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is (1) AB2 (2) A2B3 (3) A2 B5 (4) A2B

Q50.The rate of a chemical reaction doubles for every 10∘C rise of temperature. If the temperature is raised by 50∘C, the rate of the reaction increases by about : (1) 24 times (2) 32 times (3) 64 times (4) 10 times

Q52.The structure of IF7 is : (1) trigonal bipyramid (2) octahedral (3) pentagonal bipyramid (4) square pyramid

Q57.Sodium ethoxide has reacted with ethanoyl chloride. The compound that is produced in the above reaction is : (1) 2-Butanone (2) Ethyl chloride (3) Ethyl ethanoate (4) Diethyl ether

Q59.Silver Mirror test is given by which one of the following compounds ? (1) Acetone (2) Formaldehyde (3) Benzophenone (4) None of these

Q60.The presence or absence of hydroxyl group on which carbon atom of sugar differentiates RNA and DNA ? (1) 2nd (2) 3rd (3) 4th (4) 1st

Q32.The correct sequence which shows decreasing order of the ionic radii of the elements is (1) Al3+ > Mg2+ > Na+ > F−> O2− (2) Na+ > Mg2+ > Al3+ > O2−> F (3) Na+ > F > Mg2+ > O2−> Al3+ (4) O2−> F > Na+ > Mg2+ > Al3+

Q35.For a particular reversible reaction at temperature T, ΔH and ΔS were found to be both +ve. If Te is the temperature at equilibrium, the reaction would be spontaneous when (1) Te > T (2) T > Te (3) Te is 5 times T (4) T = Te

Q46.If sodium sulphate is considered to be completely dissociated into cations and anions in aqueous solution, the change in freezing point of water (ΔTf), when 0.01 mol of sodium sulphate is dissolved in 1 kg of water, is (Kf = 1.86 K kg mol−1) (1) 0.0372 K (2) 0.0558 K (3) 0.0744 K (4) 0.0186 K