Chemistry Ch 14 Class 12 MACROMOLECULES
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For which mechanism the first step involved is the same?
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How many types of polymerization reactions are there?
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Industrially water gas is converted into methanol by using catalyst:
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The sugar unit in DNA molecule is:
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A catalyst catalyzes reaction by:
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Chlorine is manufactured commercially by the electrolysis of aqueous sodium chloride (brine). Which other products are made in this process?
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All are dehydrating agents for alcohols to produce alkene except:
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Which of the following is a monosaccharide ?
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Purification of bauxite whose major impurity Is silica (SiO2) is carried out through:
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_____ is a macromolecule found in blood.
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Which of the following enzyme is used for conversion of Starch into Sugar?
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Nylon-6,6 is also called:
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Harmful and undesirable reaction of a metal when exposed to the atmosphere or any chemical agent is known as:
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All are enzymes involved in fermentation process except one:
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Graphite has a structural similarity with:
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The smog having high contents of SO2 is called:
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Which is the structure of polyvinyl chloride (polychloroethane)?
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Who introduced the concept of macromolecules?
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Polyester is used in:
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Teflon contains which of the following halide?
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Activator of phosphatase enzyme is _________.
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A polymer called Bakelite is formed by the reaction of phenol with:
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Which of the following has less amount of protein a
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Left-handed helix in proteins secondary structure is called as ______ :
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Teflon is name of:
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Which one of the following is the pure carbon compound and used as a reducing agent in industries?
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) Nylon 6 —6 Is obtained by heating adipic acid with:
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Which one of the following is the structure of Teflon?
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Proteins also contain _____ bonding.
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Common name of Octadecanoic acid is:
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The melting point of NaCl is very high, 801°C. It is reduced to 600°C by the addition of _______ in Down’s process.
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The transparent plastic used to make combs and hairbrushes is called:
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Polymerization of ethene produces which of the following polymers?
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Bakelite is a polymer of formaldehyde and __________.
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The polymer containing acrylonitrile as a monomer is:
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Which one is not true for H2SO4?
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Which of the following is not a part of the human diet?
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Which of the following is an addition polymer?
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________ is used as a preservative for life specimens.
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Which one of the following compounds is an additional polymer?
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Formula of fructose is:
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Which of the following can he used as a source of energy
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What is the chemical reaction mechanism by which cells make polymers from monomers?
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Which of following Is poison for catalyst:
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Ethylene is a monomer of polyethylene that is widely used as raw material for manufacturing plastics. It can be polymerized into two different classes: HDPE and LDPE. The following choices are the differences of HDPE and LDPE except:
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Monomers of Nylon 6,6 Is/are:
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Disposable cups are made of a polymer ‘polystyrene’. Polystyrene is:
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Polymerization is of how many types:
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Enzymes speed up the reaction upto:
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The polymer formed by the polymerization of vinyl acetate is:
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Starch is a polymer of: N
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Fe’ 2 + is a cofactor of:
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Proteins are present in
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Which of the following element is not usually present in all proteins?
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Which of the following is NOT a “raw material” used in the Solvay process?
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Chloroform is used as the following except:
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How many types of polymers are there based on their natures?
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Polymers are made up of:
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……is a technique to separate impurities from chemical products:
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Part of a polymer molecule has the following structure. -CH2 -CH2 -CH2 -CH2 -CH2 -CH2-
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Which of the following is not a disaccharide?
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Three different polymers are polymerized to form
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Allotropes are of same?
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In the NaCl crystal, chloride ions present at the face center are distributed in:
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PVC is created from which halogen
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Adipic acid and Hexamethylene dlamine combine to form?
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Polymer having a characteristics odour and mostly used as an adhesive material is
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Which of the following fertilizers has the maximum percentage of nitrogen in solid state?
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The alloy Duralumin is composed of ______ of Al.
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) Plastic cannot be recycled by
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Ali Durrani
