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1) In the production of wrought iron Mg Si and P are removed in the form of___________________? a. oxides b. silicates c. slag d. carbonates
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2) Any process of chemical decay of metals due to the action of surrounding medium is called__________________? a. activation b. enameling c. corrosion d. coating
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3) Polymers described as large molecules built up from small repeating units called________________? a. Biopolymers b. Dimers c. Monomers d. metamers
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4) The important monomers of acryclic resins is__________________? a. Vinyl chloride b. Styrene c. Methylmethacrylate d. Hexamethylenediamine
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5) Industrial materials and thermal power stations are coated with______________________? a. Polyester resins b. Epoxy paints c. Polyamide resins d. Polyvinyl chloride
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6) Common example of carbohydrates are__________________? a. Cellulose glycogen galactose b. Glyceraldehydes glucose peptone c. Glycerol phospho lipids collagen d. Legumin amylopectin albumin
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7) Hydrolysis of an oligosaccharide in the presence of acid yields________________? a. one monosaccharide unit b. No monosaccharide unit c. 2-9 monosaccharide unit d. many monosaccharide
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8) The process of polymerization was classified by___________________? a. Strecker b. Sabatier c. Runge d. W. H. Carothers
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9) Protein attached to some non protein group is called____________________? a. Derived protein b. Sample protein c. Proteoses d. Conjugated protein
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10) Lipids are soluble in___________________? a. Organic solvents b. Organic and inorganic solvents c. Inorganic solvents d. Solubility has nothing to do with lipids
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11) Animal and vegetable fats are___________________? a. Glycerols b. Fatty acids c. Triesters formed from glycerol and fatty acids d. Tetraesters formed from glycerol and fatty acids
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12) Triglycerides are easily hydrolyzed by enzymes called_________________? a. Lyases b. Ligases c. Lipases d. Hydrolases
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13) Saponification is the hydrolysis of fat or oil with an__________________? a. Acid b. Alkali c. Enzyme and alkali d. Enzyme and acid
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14) Enzymes from the same organism which catalyze same reaction but are chemically and physically distinct from each other are called______________? a. Oxidoreductases b. Hydrolases c. Isoenzymes d. Isomerases
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15) Enzyme proved useful in cancer treatment is_______________? a. Lactic dehydrogenase b. Alkaline phosphatase c. L-asparaginase d. Cellulase
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16) Nucleic acids were first demonstrated in_________________? a. Pus cells b. Sperm heads c. 1872 d. all of the above
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17) The mechanism by which the genetic information can be duplicated is called_________________? a. Duplication b. Transcription c. Replication d. Mutation
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18) The nitrogenous base different in RNA as compared to DNA is_________________? a. Cytosine b. Thymine c. Adenine d. Guanine
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19) A polymer in which three different monomers combine called_____________? a. Copolymer b. Terpolymer c. Homopolymer d. Biopolymer
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20) Polyester resins are the product of the reaction of__________________? a. Dihydric alcohol and dicarboxylic aromatic acids b. Polyamines with aliphatic dicarboxylic acids c. Styrene in the presence of catalyst d. Epichlorohydrin with diphenylol propane
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21) Carbohydrates are polyhydroxy compounds of___________________? a. Glucose b. Glyceraldehydes c. Oligosaccharides d. Aldehydes and ketones
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22) Nylon is obtained by heating___________________? a. Acrylic acid b. Epichlorohydrin c. Vinyl chloride d. Adipic acid with hexamethylene diamine
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23) Amylose is__________________? a. Soluble in water b. Insoluble in water c. Soluble in alcohol d. Partially soluble in alcohol
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24) All proteins yield ___________ upon complete hydrolysis? a. Nitrogen b. Amino acids c. Carbon and hydrogen d. Sulphur
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25) Regular coiling or zigzagging of polypeptide through hydrogen bonding is its_______________? a. Quantum structure b. Secondary structure c. Tertiary structure d. Primary structure
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26) Animal fats are located particularly in__________________? a. Skeleton tissues b. Cardiac tissues c. Connective tissues d. Adipose tissues
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27) Lipopolysaccharides are examples of________________? a. Derived lipids b. Simple lipids c. Compound lipids d. Not a type of lipids
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28) Orgosterol is__________________? a. Orgocalciferol b. Vitamin D2 c. Sterol d. all of the above
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29) Enzynies that catalyze the transfer of groups within molecule are called_________________? a. Isomerases b. Lyases c. Transferases d. Ligases
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30) Rate of enzymatic reaction is directly proportional to the concentration of___________________? a. Enzyme b. Substrate c. Enzyme and substrate d. Enzyme and product
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31) Purines and pyrimidines are__________________? a. Enzymes b. Nitrogenous bases c. Carbohydrates d. Lipids
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32) Nucleic acids direct the synthesis of__________________? a. Glucose b. Triglycerides c. Proteins d. All
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33) The fertility of the soil is improved by________________? a. Rotation of the crops b. Adding lime to the acid salts c. Adding manure and growing legumes d. All
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34) The fertilizers which provide single nutrient from NPK are called ___________ fertilizer? a. straight b. compound c. both a and b d. none of the above
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35) Addition of urea to the soil is ____________ reaction? a. endothermic b. exothermic c. both a and b d. no heat energy is involved
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36) The cooling of molten urea by air in the tower is called______________________? a. prilling b. evaporation c. condensation d. crystallization
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37) DAP (Diammonium hydrogen phosphate) contains ______________ plant nutrients? a. 60% b. 65% c. 70% d. 75%
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38) Calcarious material includes_________________? a. lime stone b. marble c. chalk d. all of the above
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39) Which of the following processes is used for the synthesis of cement ? a. dry process b. wet process c. both d. none
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40) How many zones through which the charge passes in a rotary kiln ? a. 4 b. 3 c. 2 d. 5
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41) Which one of the following set of raw material is most suitable for manufacture of urea ? a. CH4 N2 and CO2 b. H2 N2 and CO c. H2 CO2 and H2O d. H2O N2 and H2
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42) The percentage of nitrogen in urea is________________? a. 36% b. 46% c. 56% d. 66%
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43) Cement is a mixture of________________? a. clay and clinker b. clay lime stone and gypsum c. lime stone and gypsum d. lime stone and clay
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44) Cement is a mixture of so many compounds roasted in rotary kiln. Which substances has greater percentage ? a. Lime (CaO) b. Silica (SiO2) c. Alumina (Al2O3) d. Magnesia (MgO)
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45) Which sequence of steps is correct for the manufacture of cement ? a. crushing heating mixing grinding b. crushing mixing heating grinding and mixing c. crushing grinding mixing heating d. mixing heating grinding crushing
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46) The composition of mixture of clay and lime stone in the raw for cement material is __________________? a. 75% lime stone and 25% clay b. 25% lime stone and 75% clay c. 15% lime stone and 55% clay d. 55% lime stone and 15% clay
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47) The important function of burning zone in the rotary kilm is __________________? a. to dry the moisture of slurry b. to decompose lime stone to unslaked lime c. combination of different oxides like CaO SiO2 Fe2O3 and Al2O3 d. to reduce the impurities
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48) Which of the following is incorrect statement about nitrogen importance ? a. It enhances plant growth b. It is involved in the synthesis of protein and nucleic acids c. it accelerates fruits and flowers growth d. It is involved in the chlorophyll synthesis
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49) Which of the following is macronutrient ? a. Cu b. Cl c. H d. Zn
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50) Which of the following is the most suitable catalyst for ammonia synthesis ? a. Pt b. ZnO + Cr2O3 c. Fe in fused mixture of Al2O3 + SiQ2 + MgO d. All of the above
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