percdc-cns geas 3

8/10/2019 Percdc-cns Geas 3

http://slidepdf.com/reader/full/percdc-cns-geas-3 1/26

GCNS: GEAS 3

1. A 5 lb monkey is attached to a 20 ft hanging rope that weighs 0.3 lb/ft. The monkey

climbs the rope up to the top. How much work has it done.

ANS. 160 ft. – lb.

2. A 0 kg. block is resting on an inclined plane making an angle of ! from the

hori"ontal. #oefficient of friction is 0.$0% find the &alue of ! when a force of ' (

3$.32 is applied to cause motion upward along the plane.

Ans: 20o

3. A rectangular block ha&ing a width of ) cm and a height of 20 cm. is resting on a

hori"ontal plane. *f the coefficient of friction between the hori"ontal plane and the block is 0.0% at what point abo&e the hori"ontal plane should a hori"ontal force '

will be applied at which tipping will occur+

Ans: 10 cm.

4. A spring with a natural length of ,0 cm. is stretched by - cm. by a ,2 ewton force.ind the work done in stretching the spring from ,0 cm to ,) cm. 1press your

answer in oules.

Ans: 7.68 Joules



5. A block weighing 00 kg us placed on an inclined plane making an angle of ! from

the hori"ontal. *f the coefficient of friction between the block and the inclined plane

is 0.30% find the &alue of !% when the block impends to slide downward.

Ans: 16.70o

6. A certain cable is suspended between two supports at the same ele&ation and 0 cm

apart. The load is 0 per meter hori"ontal length including the weight of the cable.

The sag of the cable is 3 m. #alculate the total length of the cable.

Ans: 50.4758 m

7. The cable supported at 2 points of the same le&el has a unit weight of 4 of 0.02 kg

per meter of hori"ontal distance. The allowable sag is 0.02 m and a ma1imum tension

at the lowest point of ,200 kg. and a factor of safety of 2. #alculate the allowable

spacing of the poles assuming a parabolic cable.

Ans: 69.28 m



8. A cable of )00 m long weighing ,. k/m has tension of 50 k at each end.

#ompute the ma1imum sag of the cable.

Ans: 200 m

9. An obect e1periences rectilinear acceleration at a6t7,082t. how far doe it tra&el in $

seconds if its initial &elocity is ,0m/s.

Ans: 168m



10. An obect is accelerating to the right along a straight path at 2m/sec+ the obect

begins with a &elocity of ,0m/s to the left. How far does it tra&el in , seconds+

Ans: 125 m

11. A shot is fired at an angle of o with the hori"ontal and a &elocity of 300 fps.

#alculate to the nearest% the range of the proectile.

Ans: 932 yds

12. A solid disk flywheel 6*(200 kg8m7 is rotating with a speed of 200 rpm. 4hat is the

rotational kinetic energy+

Ans: 888 x 103 J

13. A man borrowed '2000 from a bank and promise to pay the amount for one year. He

recei&ed only the amount of ',%920 after the bank collected an ad&ance interest of



')0. 4hat is the rate of discount and the rate of interest that the bank collected in

ad&ance.

Ans: 4! 4.17

14. A bill for motorboat specifies the cost as ',%200 due at the end of ,00 days but offers

a : discount for cash in 30 days. 4hat is the highest rate% simple interest at which

the buyer can afford to borrow money in order to take ad&antage of the discount+

Ans: 21.4

15. ind the discount of '2000 is discounted for $ months at ): simple discount.

Ans: "80

16. *f the rate of interest is ,2: compounded annually% find the e;ui&alent rate of interest

if it is compounded ;uarterly.

Ans: 11.49

17. How long will it take money to double itself if in&ested at : compounded annually+

Ans: 14 ye#$s



18. A person borrows ,0% 000 from a credit union. *n repaying the debt he has to pay 00

at the end of e&ery three months on the principal and a simple interest of ,): on the

amount outstanding at that time. <etermine the total amount he has paid after paying

all his debt.

Ans: "9!725

19. A man borrows 00 for one year at a discount rate of ): per annum a.7 How much

does he actually recei&e+ b.7 4hat rate of interest is he actually paying+

Ans: #.%460! &.%8.70

20. A man borrows 2%000 for ,) months at a discount rate of ,2: per annum. a.7 How

much does he actually recei&e+ b.7 4hat rate of interest is he actually paying+

Ans: #.% "1!640.00! &.% 13.64

21. A man borrows some money at a discount rate of ,: per annum for one year. *f he

wishes to recei&e ,%000% how much must he borrow+

Ans: 1!176.47



22. ind the amount at the end of ) years if ,%000 is in&ested at $: per annum

compounded a.7 mothly b.7 ;uarterly

Ans #.% 1!614.14 &.% 1!610.32

23. How much must be in&ested now in order to ha&e ,0%000 at the end of ,0 years if

interest is paid at the rate of $: per annum compounded a.7 annually b.7 semi8annually+

Ans. A.% 5!583.95 &.% 5!536.76

24. ind the effecti&e rate if interest is compounded ;uarterly at the nominal rate of 9.$:

per anum.

Ans. 9.95



25.How many years will it take for an in&estment to a.7 double itself% b.7 to triple itself if

in&ested at the rate of : compounded annually+

Ans. #.% 18 ye#$s &.% 28 ye#$s

26. ind the effecti&e rate if interest is compounded monthly at the nominal rate of ,2:

per annum.

Ans. 12.68

27. A compressor can be purchased with a down payment of )%000 and e;ual installments

of $00 each paid at the end of e&ery month for the ne1t ,2 months. *f the money is

worth ,2: compounded monthly% determine the e;ui&alent cash price of the

compressor.

Ans. 14!753.05

CHEMISTRY

1. 4hich of the following elements is not naturally found in the human body+a. manganeseb. sulfur c. irond. thorium =



2. This important tool pro&ides most important information in one place on the elementsa. the 'eriodic Table =b. the octa&e rulec. chemical nomenclatured. the >ernouli rule

3. ?ust is the material that is formed whena. copper is e1posed to air and moistureb. iron is e1posed to oilc. titanium is e1posed to oild. iron is e1posed to air and moisture =

4. *n Australia% the temperature in @anuary is often 2o#% what is it in ahrenheit+a. 90b. 9c. 95d. ,0, =

5. *f ,2 out of ) songs become number , hits in a $ months period% what percent reachnumber , in that period+a. ,:b. 20:c. 2: =d. 32:

6. Hadrons are made up of a. mesons and orlonsb. baryons and nylonsc. baryons and mesons =d. mesons and ;uarons

7. Arsenic sulfide was added to whiten copper by alchemists% this step was calleda. melanosisb. leucosis =c. cystosisd. 1anthosis

8. ano is the reek prefi1 for a. ,02

b. ,0$

c. ,09 =d. ,0,2

9. #olor% form% density% electrical conducti&ity% and melting and boiling points are

e1ample of a. li;uid particlesb. physical properties =c. chemical propertiesd. solid properties

10. The first period contains how many elements



a. 2 =b. c. $d. )

11. oble gases are also called thea. actinidesb. chlorofluorocarbonsc. transuranic elementsd. inert gases =

12. Beawater is an e1ample of aa. homogeneous solution =b. isotonic solutionc. heterogeneous solutiond. pasteuri"ed solution

13. Bodium hypochlorite is commonly called

a. ammoniab. saltpeter c. bleach =d. rock salt

14. Bulfur is a member of a. halogensb. actinidesc. inner transition metalsd. chalcogens =

15. 4hich of the following is not a type of ;uark+

a. topb. magic =c. upd. bottom

16. Appro1imately what percentage of the elements are metals+a. 2:b. 0:c. )0: =d. 90:

17. The actinide series of elements area.

all lighter than air b. radioacti&e =c. sil&er in color d. all found in nature

18. <iamonds ha&e what kind of crystal structure+a. pentagonalb. planar c. elliptical



d. cubic =

19. The molecular formula of fructose isa. #2H20$

b. #$H,2C$ =c. #$H,0C2

d. #,2H$C2

20. A molecule is thea. reduction of elements to their basic structureb. combination of two or more atoms held together by chemical bonds =c. support framework for the atomDs inner sub8particlesd. Eatin origin for the element molybdenum

21. The hea&y "ig8"ag line to the right of the 'eriodic Table separatesa. metal saltsb. halogensc. the actinide series

d. the metal and non8metals =

22. A phasea. is a di&ision between metals and non8metalsb. something e&eryone goes through at on time or another c. describing the number of different homogeneous materials in a sample =d. similar to the day and night cycle of the body

23. The halogens are alla. non8metals =b. hydrocarbonsc. metals

d. lighter than neon

24. Americium isa. a patriotic elementb. a member of the rare earth 6lanthanide7 metals =c. always a red metalloidd. has the chemical symbol Ar

25. The atomic number of boron isa. =b. )c. ,0.)d.

,2.2

26. A >unsen burner isa. a type of chilib. a kind of sweet rollc. a heat source in the laboratory =d. is in&ented by Bir Ale1ander >unsen

27. A cathode is another name for



a. cat carrier b. positi&ely charged electrodec. carbon dating de&iced. negati&ely charged electrode =

28. Bamples that can be broken down into simpler chemicals are known asa. particlesb. comple1c. compounds =d. cubic

29. Transuranic elementsa. ha&e two8letter shorthand namesb. are not naturally occurring =c. are made in light nuclei reactionsd. are not highly defined

30. The total diameter of an atom is about

a. ,00 times larger than the nucleusb. ,%000 times larger than the nucleusc. ,0%000 times larger than the nucleus =d. ,00%00 times larger than the nucleus

31. The shorthand chemical name for protactinium isa. 'tb. 'r c. Cd. 'a =

32. The periods ha&e the following number elements

a. 2% )% )% ,)% ,) =b. 2% )% ,2% ,$% ,)c. 2% )% ,0% ,2% ,)d. 2% )% ,0% ,)% ,)

33. Crbitals of the d8type come ina. sets of 2b. sets of 3c. sets of =d. sets of 5

34. >romine isa.

commonly added to toothpasteb. the only li;uid nonmetal at room temperature =c. an alkaline earth metald. ne&er found as a &apor

35. The atomic number of neptunium isa. 35b. 2c. 93 =



d. ,0,

36. 4ho presented On the Relation of the Properties to the Atoic !ei"hts of the

#leents$a. Ears ilsonb. Antoine Ea&oisier c. Eothar Feyer d. <imitri Fendeleye& =

37. *t is 3o# in dinburgh% Bcotland% in ebruary% what is that in o in 'ortland% Faine+a. 29b. c. $3 =d. 5,

38. *f the shell of an orbital is 2n2 ( )% what is n+a. n%1b. n%2 &

c. n%3d. n%4

39. arly humans thought rust wasa. red8brown dirtb. a mystery =c. a trick of the eyed. a problem with the sample

40. The lanthanides and actinides are also called thea. noble gasesb. halogens

c. hea&y metalsd. inner transition metals =

41. #ommon table salt is made up of a. lithium chlorideb. potassium chloridec. sodium chloride =d. cesium chloride

42. er is the rench name for the elementa. iron =b. phosporus chloridec.

sodium chloride =d. cesium chloride

43. The pH of milk is roughlya. .b. $. =c. 5.d. ).



44. C1ygenDs filled is orbital diagram has how many up and down arrows+a. ,b. 2 =c. 3d.

45. The 'auli e1clusion principle was written bya. Alfredo 'aulib. 'ablo 'aulic. 4olfgang 'auli =d. @ane 'auli

46. 4hen all orbitals of a certain suble&el ha&e to be occupied by a single electron before

pairing starts% it is known asa. the 'auli e1clusion principleb. BchrodingerDs e;uationc. 4illiamDs ruled. HundDs rule =

47. C1idation describesa. electron 6G7 gainb. electron 687 lossc. a helpful diet plan =d. a better spending plan

48. itrogen reacts with which element to form ammonia+a. hydrogen =b. o1ygenc. chorined. lithium

49. Fi1tures can be di&ided into two typesa. up and downb. homogeneous and heterogeneous =c. thick and thind. sweet and sour

50. The combing power of one element with the atoms of another is calleda. groupingb. sensiti&ityc. &alence =d. nomenclature

51. This elements make up 2: of the earths elementsa. phosphorusb. potassiumc. calciumd. silicon =

52. arly alchemist related the planet Fars to which element+a. iron =



b. goldc. leadd. mercury

53. The first step the alchemists took to change a metal to gold wasa. to heat heater b. to get a good nightDs sleepc. called melanosis =d. to check the weather

54. There are how many base units in the *nternational Bystem of nits6B*7+a. b. c. 5 =d. 9

55. A thermometer measuresa. color gradients

b. a themosc. &olumed. temperature =

56. The shorthand chemical name of bismuth isa. >i =b. >mc. >sd. >t

57. Fetals that are ductile means thata. they are used as a supplement in duck food

b. they can pulled into wires =c. they can be flattened into sheetsd. they are used in air8conditioning ducts

58. The obel 'ri"e for chemistry is awarded to chemistsa. who can chew gum and ump on foot at the same timeb. studying in Bwit"erlandc. with really big laboratoriesd. who disco&er something new or e1plain something not well understood =

59. *f the temperature of sample is ,o#% what is the temperature in kel&in+a. 22 kel&inb.

29 kel&inc. 2)5 kel&in =d. 29 kel&in

60. Two electrons in each filled orbital must bea. opposite in charge =b. really co"yc. chemistsd. of the same charge



61. About ,: of the earth resources are made up of thus element.a. siliconb. manganesec. phosphorus =d. magnesium

62. These elements are usually shiny and good conductors of heat and electricitya. halogensb. metals =c. noble gasesd. non8metals

63. The pH of bleach isa. .0b. 5.c. 9.2d. ,.0 =

64. *ce is the solid form ofa. leadb. heliumc. water =d. crystals

65. ABA Bpinoffs are an e1ample of a. go&ernment insightsb. applied science =c. space e;uipment used only in spaced. pure science

66. arly alchemists used this to represent the elements.a. reek lettersb. sign languagec. Arabic letter d. signs of planets =

67. The B* standard unit for mass is thea. gramb. poundc. kilogram =d. bushel

68. 4hich of the following is not a correct measurement+a. grams per litter b. degrees ahrenheitc. kilometers per hour d. degrees per meter =

69. The atomic number of hydrogen isa. the same as its atomic weight =



b. not knownc. only calculated when in solid formd. 2

70. lements found along the border of metals and non8metals are calleda. transition metalsb. noble glassesc. metalloids =d. rare earth metals

71. I&icksil&er is the Bwedish name for a. potassiumb. mercury =c. sil&er d. tin

72. Thorium is part of which group+a. halogens

b. lanthanidesc. actinides =d. metals

73. early 2: of the earths elements is made up of this elementa. calcium =b. chlorinec. strontiumd. "inc

74. arly alchemists related the planet @upiter to which element+a. gold

b. titaniumc. sil&er d. tin =

75. 4hich reek philosopher called tiny particles atomos 6atoms7 +a. 'latob. Aristotle =c. <emocritusd. Eucretius

76. The distance from the sun to 'luto is roughlya. ,0) metersb.

,0,3

metersc. ,0,0 meters =d. too far to think about

77. Hydrogen and Helium are located in which period+a. first =b. secondc. thirdd. fourth



78. The B* standard unit to measure a pure substance is thea. chipmunk b. gopher c. mole =d. s;uirrel

79. allium was disco&ered one year beforea. copper b. germanium =c. calciumd. selenium

80. *n a binary co&alent compound% phosphorus is named before which of the following

elements+a. carbonb. siliconc. boron

d. chlorine =

81. *n an ion of one atom% the o1idation number is e;ual toa. twob. "eroc. the ionDs charge =d. the ionDs atomic weight

82. The iron form of permanganate isa. 'nO4

( =b. '"O2

)

c. 'd* 2 )

d. PO4(

83. 4hich of the following would not be considered to1ic at this ppm le&ela. sil&er 60.0 ppm in water7b. arsenic 60. ppm7 =c. diethyl ether 600 ppm7d. mercury 60.0022 ppm in water7

84. The word radioacti&ity was first used bya. Eothar Feyer b. 'latoc. Han #hristian Andersend.

Farie #urie =

85. 4hich element is the only one that has been gi&en separate names for its different

isotopes+a. hydrogen =b. nitrogenc. idodined. carbon



86. The two types of nuclear reactions are radioacti&e decay of bonds and thea. Jbilliard ballK type =b. Jtennis ballK typec. Jgolf ballK typed. Jping pong ballK type

87. The electronegati&ity &alue of lead isa. 0.$b. ,.c. ,.5d. 2.2 =

88. Bi18sided structure with alternating single and double bond are calleda. in&erse isomersb. orbitalsc. aromatic hydrocarbons =d. noble gases

89. Eead forms how many kinds of ions with uni;ue chargesa. ,b. 2 =c. 3d.

90. 4hat is appro1imately the pH le&el of blood+a. $.b. 5.0c. 5. =d. ).0

91. All o1idation numbers added together in a compound must e;uala. "ero =b. onec. the total number of atomsd. enough to make the e1periment working

92. The >8subgroup of elements are also calleda. transition elements =b. metalsc. halogensd. gases

93. 4hich of the following is an aromatic compound+a. methanolb. ethanolc. butaned. cinnemaldehyde =

94. ?adioacti&e iodine is used in the marking and treatment of a. emphysemab. thyroid cancer =



c. flat feetd. halitosis

95. Folecules with chiral isomers area. not superimposable =b. acid8base pairsc. superimposabled. elastomers

96. *n binary co&alent compound% sulfur is named before which of the following

elements+a. carbonb. o1ygen =c. borond. hydrogen

97. How many elements are there in the si1th period+a. ,0

b. 2)c. 32 =d. 0

98. arly alchemist related the planet Baturn to what element+a. boronb. lead =c. sulfur d. scandium

99. A pH meter measures the amount of a. hydrogen ions in a solution =

b. o1ygen ions in a solutionc. nitrogen in a solutiond. sodium ions in a solution

100. The pH of most carbonated drinks is abouta. 3.,b. 3.9 =c. $.2d. ).

101. The measurement of the charge separation between each part of a molecule is calleda. an e1tra8terrestrial momentb.

an embarrassing momentc. a tripole momentd. a dipole moment =

102. The si"e of an a&erage water molecule isa. ,082 metersb. ,08 metersc. ,08) meters =d. ,08,0 meters



103. Eawrencium is located in which perioda. thirdb. fourthc. si1thd. se&enth =

104. *f the shell capacity of an orbital is 2n2(32% what is n+a. n%1b. n%2c. n%3d. n%4 &

105. *ierro is the +panish nae for a. leadb. iron =c. mercuryd. hydrogen

106. ,o-alent bonds occur between twoa. basesb. metalsc. non8metals =d. a metal and a non8metal

107. *f the temperature of a sample is 253 Iel&in% what is the temperature in #o+a. 0 =b. ,0c. 32d. 53

108. 4hich element melts in your hand like a chocolate bar+a. kryptonb. tantalumc. strontiumd. cesium =

109. #arbon single8walled% nano8scale tubular structures are calleda. buck ballsb. rare earth metalsc. nanotubes =d. chalogens

110. Cne of the first acids a beginning chemistry student uses in the lab isa. hydrocholoric acid =b. cyanoic acidc. propionic acidd. barbaric acid

111. 'roteins gi&e hard structural strength in all but which of the following+a. ankle bone



b. crab shellc. spinal columnd. earthworm =

112. The electronegati&oty &alue of hafnium isa. 0.5b. ,.3 =c. ,.)d. 2.2

113. Eutetium is part of which group+a. halogensb. lanthanides =c. actinidesd. metals

114. 4hat is the appro1imate pH of stomach acid+a. 2.0=

b. .9c. $.2d. 5.

115. Fany people with milk sensiti&ities ha&e trouble with the milk sugar a. fructoseb. lactose =c. sucrosed. glucose

116. *f a solution measured .) on the pH meter% it would bea. a radioacti&e solution

b. a noble gasc. a based. an acid =

117. Eithium paper changes from blue to red when a solution tested is aa. a blue dyeb. an acid =c. a red dyed. a base

118. >ases react with acids to forma. dark chocolate and white chocolateb.

acetone and waterc. water and salt =d. propane and butane

119. An uncombined element has an o1idation number of a. 0 =b. ,c. 2d. 3



120. *n a binary co&alent compound% iodine is named before which of the following

elements+a. bromine =b. siliconc. sulfur d. nitrogen

121. arly chemist related the planet Lenus to which element+a. iodineb. copper =c. potassiumd. sodium

122. The B* standard unit for length isa. centimeter b. decimeter c. meter =

d. kilometer

123. #esium is located in which period+a. secondb. thirdc. fifthd. si1th =

124. The pH of &inegar isa. 3.0 =b. 3.$c. .2

d. .0

125. ickel forms how many kinds of ions with uni;ue charges+a. ,b. 2c. 3d. =

126. 4hich of the following is an aromatic compound+a. propanolb. isobutenec. &anillin =d.

ethylene

127. 4hich of the following is the most widely produced acid in the nited Btates+a. sulfuric acid =b. nitric acidc. boric acidd. malic acid

128. *f a solution measured 5.5 on the pH meter% it would be



a. a halogenb. a basec. a macromolecule =d. an acid

129. *f a solution measured ).9 on the pH meter% it would bea. a brittle solidb. an inert gasc. a base =d. an acid

130. 4hen o1ygen is part of a compound the o1idation number is 82 e1cepta. saltb. pero1ides =c. hydrocarbonsd. nanomolecules

131. *f the temperature of a sample is 33 Iel&in% what is the temperature in o#+

a. 0 o#b. 90 o#c. 50 o# =d. ,,0 o#

132. arly alchemist related the Bun to which element+a. gold =b. sil&er c. copper d. iron

133. *n ,923% two chemists% @ohannes >ronsted and Thomas Eowry% described

a. mesons and hadronsb. acids and bases in the scientific literature =c. the 'eriodic Tabled. how to construct nanotubes

134. Eitmus paper changes from red to blue when a solution tested isa. a blue dyeb. an acidc. a red dyed. a base =

135. 4hich of the compounds below do most people learn about first in chemistry+a.

la&ab. &anillinc. water =d. o"one

136. ?eduction is the chemical name for a. when a balloon loses air and shrinksb. a decrease in o1idation number =c. the loss of energy from a gas



d. the process of writing a name on a grain of rice

137. C1ygen has an o1idation number of a. 8,b. 82 =c. 83d. 8

138. Helium is how many times dense than water+a. 2 times =b. 3 timesc. timesd. Helium is the same density as hydrogen

139. The in&ention of the utenberg printing press in ,2 helped spread which theory+a. Theory of ?elati&ityb. ano8technology Theoryc. #onser&ation of nergy Theory

d. Atomic Theory =

140. *n ,99% three chemists% Folina% ?owland and #rut"en became concerned about

damage to thea. polar ice capsb. o"one layer c. olden ate >ridge =d. #anadian >ridge

141. #hemically% simple sugars are also known asa. something to a&oid when on a dietb. monosaccharides =

c. the only cause of dental ca&itiesd. disaccharides

142. Antimony forms how many kinds of ions with uni;ue charges+a. ,b. 2 =c. 3d.

143. Argon is located in which period+a. firstb. secondc.

third =d. fourth

144. arly alchemists related the Foon to which element+a. manganeseb. &anadiumc. chromiumd. sil&er =



145. The pH of seawater is roughlya. .2b. $.,c. 5.5 =d. ).9

percdc-cns geas 3

Documents