Che 442l1 Finals Students

TECHNOLOGICAL INSTITUTE OF THE PHILIPPINES P CASAL

FINAL EXAMINATION – CHE 442L1 NAME_________________________________ NAME___________________ ______________

Date : October 1! 2""

S#b$ect%Sect&o'____CHE 442L1

I'(tr#ctor: ENG)* LO))AINE A* CA))ILLO

Directions. Encircle the letter of the correct answer. 1. A suff suffix ix which which means means decom decomposi positio tionn has taken taken place place.. a . i n as e b. lysis c . nis t

d. none of the given

2. A reacti reaction on of an acyl halide halide with with water water to to yield a carboxylic carboxylic acid and and hydrogen hydrogen chloride chloride.. a. hydration b. acylation c. esterification d. none of the given 3. A reactio reactionn of an acyl acyl choride choride with an an alcohol alcohol to give give an ester ester and hydrogen hydrogen chlorid chloride. e. a. hydration b. acylation c. esterification d. none of the given . !t is is the the addit addition ion of water water to a reca recatan tant. t. a. hydration b. dehydration

c. hydrolysis

d. hydrogenation

". A substitu substitution tion reaction reaction wherein wherein the the nature nature of the attacking attacking reagent reagent is best best described described as having having an excess excess of reactive reactive lone pairs of electron . a. nucleophilic b. electrophilic c. saponification d. none of the given #.$he production of toluene from n%heptane involves the following reactions a. hydrogenation& reduction& hydr ydrolysis sis b. dehydr ydrogena enation& reduction& hydrolysis c. hydr hydrog ogen enat atio ion& n& redu reduct ctio ion& n& dehy dehydr drog ogena enatition on d. dehy dehydr drog ogena enatition on&& red reduc uctition on&& hydr hydrol olys ysis is '. !t tells tells us how much much of the the useful useful product product is generated generated by the process a. conversion b. efficiency c . y i el d

d. non eof the given

(. $hese are impuri impurities ties in water water which are either either inorgan inorganic ic or organic organic in nature& nature& coming coming from plants plants and and animals animals )parts*& )parts*& silt. silt. a. dissolved solids b. dissolved gases c. microorganisms d. suspended matter +.$hese are salts& carbonates& chlorides in the form of ,a& -g& a& and / ions in the form of carbonates. a. dissolved solids b. dissolved gases c. microorganisms d. suspended matter +. !t obeys obeys 0enr 0enrys ys aw aw when when disso dissolve lvedd in water water.. a. dissolved solids b. dissolved gases

c. microorganisms

d. suspended matter

1. !t is the first first step step in treatin treatingg water water of impurities. impurities. a. coagulation b. filtration c. disinfection

d. screening

11. !t was classifi classified ed as an elemen elementt in 1'''. 1'''. a . ox y g e n b. sulfur

c & gol d

d. helium

12. !t is another another name for for elemental elemental sulfur sulfur.. a. a4ua regia b. bron5e

c. brimstone

d. amber

13. 6ulfur combines with almost a77 of the elements except inert gases& gold and 8888888. a. tungsten b. silver c. polonium d. iridium 1.At normal temperature& sulfur combines with sodium and barium to form this compound. a . o x i d es b. sulfides c. sulfonates d. none of the given 1".0e developed a process for mining sulfur a. avoisier b. 9rasch

c.:riestly


1#.!t is one of the four basic raw materials of the chmeical industry. a. cement b. gypsum c. limestone

d. ores

1'. 9uming sulfuric acid has this formula. a. 026;.02; b. 026;.202;

d. 026;.6;3

c. 026;

1(. $he bicarbonates of calcium and magnesium are classified as8888888888 of water. a. permanent hardness b. suspended sol solids c. temporary hardness d. non eof the given 1+. $hese are natural sources of air pollution.

a. vehicle exhaust

b. volcanic eruptions

2.Acidic hydrogen )0<* is attached to an oxygen. a. binary acids b. oxy acids

c. stack gases


c. acids


21. $hey are plastic materials used in making pottery. a. stoneware b. kaolin c. clay


22.!t is a highly refractory white clay used for making porcelain. a. stoneware b. kaolin c. clay


23. $hey are extremely fine clay of volcanic dust origin. a. stoneware b. kaolin c. bentonite

d. ball

2. !t is the third common component in white ware ceramic production. a. po55olan b. gypsum c. limestone

d. feldspar

2". $hese are materials composed of limestone. a. argillaceous b. calcareous

c. gypsum


2#. $hese are materials rich in clay. a. argillaceous b. calcareous

c. gypsum


2'. !t is an organic substance which binds the cellulose fiber forming the chief part of woody tissues. a. chlorophyll b. lignin c. calcium carbonate d. none of the given 2(. !t is one of the process in the production of paper rendering the paper whiter. a. chlorination b. caustic extraction c. bleaching d. none of the given 2+.!t is usually the first step in the recycling of paper. a. pulping b. deinking c. bleaching


3.!t is a substance that acts as binding agent for materials from construction. a. gypsum b. clinker c. cement

d. portland

31. !t is usually done to reduce the si5e of the limestone from the 4uarry. a. pulping b. communition c. crushing


32. !t is produced after the limestone& silica and shale are burned in the rotating kilns. a. gypsum b. mortar c. po55olan d. clinker 33. $hese are e4uipment are employed to catch the cement dust escaping to the atmosphere. a. stacks b. electrostatic precipitators c. kilns d. non eof the given 3. $hese are types of clays utili5ed for high temperature burning. a. insulators b. kaolin c. refractory


Che 442l1 Finals Students

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