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FINAL COACHING QUESTIONS ENGINEERING REVIEWERS OF ASIA (ERA)

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Page 1: GEAS 1.pptx

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FINAL COACHINGQUESTIONS

ENGINEERING REVIEWERS OF ASIA(ERA)

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General Engineering &Applied Science

It explains combustion as aresult of loss of a substance.

  Engineering Re!ie"er

#$ Aia

 %#gi'#n

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General Engineering &Applied Science

 The man behind tabulation ofelement.

  Engineering Re!ie"er

#$ Aia

 endelee! 

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General Engineering &Applied Science

He rst framework for naming

symbols using circles and dots like Ofor oxygen and O with doth in themiddle for hydrogen.

  Engineering Re!ie"er

#$ Aia

 

 #n *al'#n

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General Engineering &Applied Science

A solution contains 33. grams of

sucrose !"#H##O""$ dissol%ed in #&grams of water. 'etermine the molalconcentration( )!"#H##O"" * 3+# g,mol-

  Engineering Re!ie"er

#$ Aia

 

+,-./0

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General Engineering &Applied Science

How many grams of potassium

chlorate must be decomposed toyield #./ grams of oxygen( )0!lO3*

"##.1 g,mole-

  Engineering Re!ie"er

#$ Aia

 

/-1,2 gra0

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General Engineering &Applied Science

 The %olume of a denite 2uantity of

dry gas is in%ersely proportional tothe pressure pro%ided thetemperature remains constant.

  Engineering Re!ie"er

#$ Aia

 

3#4le5 La"

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General Engineering &Applied Science

It refers to matter that do not ha%e

denite form or structure.

  Engineering Re!ie"er

#$ Aia

 

A0#rp#6

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General Engineering &Applied Science

 Three grams of sulphur dissol%ed in #&& g of

naphthalene !"&H$ was found decreasing thefree4ing point of the sol%ent to &./# 5!. 6indthe molecular weight of the solute. )0 f !"&H *

1. 5!,molar-

  Engineering Re!ie"er

#$ Aia

 

7-8,17 g90#le

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General Engineering &Applied Science

7ubstance ha%ing a pH le%el less than

/.

  Engineering Re!ie"er

#$ Aia

 

:ae

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General Engineering &Applied Science

It is the enthalpy change associated

with the condensation of gaseouspositi%e and negati%e ion into a crystal.

Engineering Re!ie"er

#$ Aia

 

La''ice Energ4

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General Engineering &Applied Science

 The chemical name for 0 #H8O+  is

 99999.

  Engineering Re!ie"er

#$ Aia

 p#'ai60

4dr#genp#pa'e

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General Engineering &Applied Science

It is the cheapest of the soluble salts of

aluminum and is prepared by theaction of sulfuric acid on clay orbauxite.

Engineering Re!ie"er

#$ Aia

  Al60in60  6l$a'e

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General Engineering &Applied Science

It is a product of the weathering of

complex silicates$ particularly offeldspars which are abundant minerals.

  Engineering Re!ie"er

#$ Aia

  cla4

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General Engineering &Applied Science

 These are isomers resulting from

di:erences in special orientation ofligand groups.

  Engineering Re!ie"er

#$ Aia

  'er#i#0er

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General Engineering &Applied Science

;lectrons occupy all the orbitals of a

gi%en subshell singly before pairingbegins. These unpaired electrons ha%eparallel spins. This is known as<

  Engineering Re!ie"er

#$ Aia

  H6nd5 r6le

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General Engineering &Applied Science

It is a tube lled with a concentrated

solution of a salt which conducts currentbetween the half cells but pre%ents themixing of the solutions of the half cells.

  Engineering Re!ie"er

#$ Aia

  al' :ridge

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General Engineering &Applied Science

 This law states that at constant

temperature the %olume of asample of gas %aries in%ersely withthe pressure.

Engineering Re!ie"er

#$ Aia

  3#4le5 La"

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General Engineering &Applied Science

;lectron a=nity is the amount of

energy absorbed when an electronis added to an isolated gaseousatom to form an ion with a ">

charge. The general trend across aperiod and down a family is 99999.

  Engineering Re!ie"er

#$ Aia

  n#' reg6lar pa''ern

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General Engineering &Applied Science

It is the scattering of light by

colloidal particles

  Engineering Re!ie"er

#$ Aia

  T4ndall E;ec'

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General Engineering &Applied Science

!onsider H3AsO3$ Arsenic acid

)H*".&"$As*/+.$O*"1.&-.Howmany mole is "kg of H3AsO3(

  Engineering Re!ie"er

#$ Aia

  2,.< 0#le

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General Engineering &Applied Science

!on%ert #. liters to 2uart4.

  Engineering Re!ie"er

#$ Aia

  /,1</8 =6ar'>

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General Engineering &Applied Science

It is customary to indicate

accuracy by using a certainnumbers of gures or digits.

  Engineering Re!ie"er

#$ Aia

  igni?can' ?g6re

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General Engineering &Applied Science

It is a %eried hypothesis.

  Engineering Re!ie"er

#$ Aia

  'e#r4

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General Engineering &Applied Science

It is re2uired for organic

compounds.

  Engineering Re!ie"er

#$ Aia

  car:#n

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General Engineering &Applied Science

" Angstrom is e2ual to<

  Engineering Re!ie"er

#$ Aia

  7+@ c0

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General Engineering &Applied Science

 Term used to denote the technology of

treating a mined ore to obtain a producthigher on concentration of a wanted mineralfrom the unwanted rock mass in which itoccurs.

  Engineering Re!ie"er

#$ Aia

  #re dreing

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General Engineering &Applied Science

It states that$ ?If a stress is placed on a

system on e2uilibrium whereby thee2uilibrium is altered$ that change willtake place which tends to relie%e orneutrali4e the e:ect of the addedstress?.

  Engineering Re!ie"er

#$ Aia

  Le Ca'elierB %rinciple

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General Engineering &Applied Science

 The energy possessed by a

substance that allows it to bechanged into a new substance.

  Engineering Re!ie"er

#$ Aia

  Ce0ical energ4

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General Engineering &Applied Science

If heat is absorbed by the

system during a chemicalchange$ it is called as<

  Engineering Re!ie"er

#$ Aia

  end#'er0ic

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General Engineering &Applied Science

@ho determined the 2uantitati%e

relationship between the amount ofelectricity used in electrolysis andthe amount of chemical reaction

that occurs(

  Engineering Re!ie"er

#$ Aia

  icael Farada4

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General Engineering &Applied Science

It is considered as deri%ati%es of

ammonia in which one or more of thehydrogens ha%e been replaced by thealkyl or aryl group. It is characteri4ed

by unpleasant odors.

  Engineering Re!ie"er

#$ Aia

  A0ine

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General Engineering &Applied Science

ame the gi%en binary compound<

!s6.

  Engineering Re!ie"er

#$ Aia

  Cei60 Fl#6ride

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General Engineering &Applied Science

!alculate the molar concentration

of a solution that contains "g ofpotassium hydroxide in ##ml ofsolution.

  Engineering Re!ie"er

#$ Aia

  7,/

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General Engineering &Applied Science

@hat is the electronic

conguration for magnesium(

  Engineering Re!ie"er

#$ Aia

  NeD-/ 

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General Engineering &Applied Science

@hat is the %olume of " moles of a

gas at # atm and #/3 0(

Engineering Re!ie"er

#$ Aia

  77,/L

l i i

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General Engineering &Applied Science

It is a borosilicate glass with a %ery

low coe=cient of thermalexpansion$ hence$ itBs wide forcooking and ser%ing utensils.

  Engineering Re!ie"er

#$ Aia

  %4re

G l i i &

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General Engineering &Applied Science

!alculate the pH and the pOH of

each of a ".&& M HO3.

  Engineering Re!ie"er

#$ Aia

  pH +,++ pOH 7<,++

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G l E i i &

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General Engineering &Applied Science

@hat is the Cowry>Dronsted acid in

H!l dissol%ed in water(

  Engineering Re!ie"er

#$ Aia

  H-O

G l E i i &

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General Engineering &Applied Science

It is a colorless solid capable of

being cut into brilliant crystals isthe hardest$ must abrasi%e mineralknown.

  Engineering Re!ie"er

#$ Aia

  *ia0#nd

G l E i i &

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General Engineering &Applied Science

It is the calculation of both energy

balances and material balances ina chemical system.

  Engineering Re!ie"er

#$ Aia

  S'#ici#0e'r4

G l E i i &

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General Engineering &Applied Science

Ei%e the names of the following

co%alent compounds.8!l3 $ !l#O/

  Engineering Re!ie"er

#$ Aia

  %#'ai60 Tricl#ride *iCl#rine Hep'a#ide

G l E i i &

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General Engineering &Applied Science

ame the gi%en compound$ 8!I.

  Engineering Re!ie"er

#$ Aia

  %#p#r6 %en'acl#ride

G l E i i &

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General Engineering &Applied Science

 99999 in%ol%es the replacement of

one of the atoms or groups ofatoms attached to the carbonFDackboneG of the organic

molecule.

  Engineering Re!ie"er

#$ Aia

  S6:'i'6'i#n Reac'i#n

G l E i i &

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General Engineering &Applied Science

!alculate the %olume )in Citres-

occupied by /.+&g of H3 at 7T8)7tandard Temperature$ and8ressure-

  Engineering Re!ie"er

#$ Aia

  .,2-L

G l E i i &

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General Engineering &Applied Science

It is the ;nergy change

accompanying a mole of electronsbeing added to a mole of agaseous atoms or ions.

  Engineering Re!ie"er

#$ Aia

  Elec'r#nic AJni'4

G l E i i &

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General Engineering &Applied Science

A silicon chip used in an integrated

circuit of a microcomputer has amass of .1mg. How many silicon)7i- atoms are present in this chip(

  Engineering Re!ie"er

#$ Aia

  7,//7+/+a'#0

G l E i i &

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General Engineering &Applied Science

@hat is the %olume of " mole of a

gas at " atm and +10(

  Engineering Re!ie"er

#$ Aia

  <<,L

General Engineering &

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General Engineering &Applied Science

 This Caw states that if a process

can be written as the sum ofse%eral stepwise processes$ the;nthalphy change the total process

e2uals the sum of the ;nthalphychanges of the arious 7teps.

  Engineering Re!ie"er

#$ Aia

  He La"

General Engineering &

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General Engineering &Applied Science

How much heat will be released

when 1.&g of ;thyl Alcohol$ Heatof apori4ation of ,g$ changesfrom the gas phase to a li2uid at

its boiling(

  Engineering Re!ie"er

#$ Aia

  881++

General Engineering &

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General Engineering &Applied Science

7ulfur HexaJouride )761- is a colorless$

odourless and %ery unreacti%e gas.!alculate the pressure )in atm- exertedby ".# moles of the gas in a steel

%essel of %olume .+#C at +K!.

  Engineering Re!ie"er

#$ Aia

  ,28 a'0

General Engineering &

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General Engineering &Applied Science

!alculate the L by mass of

hydrogen and of oxygen in thecompound water

Engineering Re!ie"er

#$ Aia

K H4dr#gen :4 0a in

77,/K K #4gen :4 0a in ,K

General Engineering &

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General Engineering &Applied Science

  This process separates the

components of a mixture on thebasis of di:erences in particle si4e.It is used most often to separate a

li2uid from a solid.

  Engineering Re!ie"er

#$ Aia

  Fil'ra'i#n

General Engineering &

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General Engineering &Applied Science

 'etermine the chemical reaction

of the following historicalclassication<

  @M N P Q @P N M

  Engineering Re!ie"er

#$ Aia

  *#6:le *iplace0en' #re'a'ei

General Engineering &

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General Engineering &Applied Science

 7ulfur HexaJuoride )761- is a

colorless$ odorless$ %ery unreacti%egas. !alculate the pressure )in atm-exerted by ".# moles of gas in a

steel %essel of %olume .+3C at+R!.

  Engineering Re!ie"er

#$ Aia

  ,28 a'0

General Engineering &

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General Engineering &Applied Science

 It is dened as the pressure

exerted by a force of one newtonacting on an area of one s2uaremeter.

  Engineering Re!ie"er

#$ Aia

  %acal

General Engineering &

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General Engineering &Applied Science

 Eold is a precious metal that is

chemically unreacti%e. It is used mainly in Sewerly$ dentistry and electronic de%ices.A piece of gold ingot with a mass of 3&"grams has a %olume of ".13cm3.!alculate the density of gold.

  Engineering Re!ie"er

#$ Aia

  7.,- g9c0-

General Engineering &

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General Engineering &Applied Science

 A bottle of certain ceramic tile

cleanser$ which essentially a solutionof hydrogen chloride$ contains "3&g ofH!l and /&g of water. @hat is the

percent by mass of H!l in thiscleanser(

  Engineering Re!ie"er

#$ Aia

  7<,K

General Engineering &

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General Engineering &Applied Science

 A co%alent bond between two atoms

with di:erent electronegati%ities$ sothat the electron density isunsymmetrically distributed.

  Engineering Re!ie"er

#$ Aia

  %#lar :#nd

General Engineering &

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General Engineering &Applied Science

 @hich element has the highest

ioni4ation potential of its atom(

  Engineering Re!ie"er

#$ Aia

  Heli60

General Engineering &

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General Engineering &Applied Science

  The acid secreted by the cells of the

stomach lining is a hydrochloric acidsolution that typically contains&.&&//+ mol of H!l per &.&&&C of

solution. @hat is the concentration ofthis acid.

  Engineering Re!ie"er

#$ Aia

  +,788 0#l9L

General Engineering &

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General Engineering &Applied Science

!on%ert #.3m to cm

  Engineering Re!ie"er

#$ Aia

  /-+ c0

General Engineering &

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General Engineering &Applied Science

It is the minimum amount of

radioacti%e material needed tosustain a nuclear chainreaction.

  Engineering Re!ie"er

#$ Aia

  cri'ical 0a

General Engineering &

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General Engineering &Applied Science

!alifornium>#+1 is formed by

bombardment of ranium>#3atoms. If four neutrons are alsoformed$ what particle is used for

the bombardment(

  Engineering Re!ie"er

#$ Aia

  7/1C

General Engineering &

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General Engineering &Applied Science

 99999states that a constant

pressure and temperature$ the%olume of a gas is directlyproportional to the number of

moles present.

Engineering Re!ie"er

#$ Aia

  A!#gadr#5 La"

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General Engineering &

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General Engineering &Applied Science

How many 4eroes in the

measurement &.&&&#&&+& aresignicant(

  Engineering Re!ie"er

#$ Aia

  'ree

General Engineering &

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General Engineering &Applied Science

@hich of the following describes a

chemical change(

  Engineering Re!ie"er

#$ Aia

  Tarniing il!er

General Engineering &

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General Engineering &Applied Science

A laboratory experiment was performedto determine the percent by mass ofwater in a hydrate. The accepted %alue is31.&L water whose obser%ed %alue hasan error of .&&L. 6ind the percent by

mass of water.

  Engineering Re!ie"er

#$ Aia

  -2,K "a'er

General Engineering &

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General Engineering &Applied Science

@hich of the following phase changes

represent sublimation(

  Engineering Re!ie"er

#$ Aia

  S#lid   ga

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General Engineering &

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General Engineering &Applied Science

@hich of the following is a binary

compound(

  Engineering Re!ie"er

#$ Aia

  H4dr#cl#ric acid

General Engineering &

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General Engineering &Applied Science

An example of a ternary compound is

 99999.

  Engineering Re!ie"er

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  %#'ai60 cl#ra'e

General Engineering &

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General Engineering &Applied Science

@hat is the charge of a hydrogen

atom(

Engineering Re!ie"er

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  +

General Engineering &

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General Engineering &Applied Science

eutrons were disco%ered by

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  a0e Cad"ic 

General Engineering &

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General Engineering &Applied Science

@ho de%eloped the atomic theory(

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General Engineering &

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General Engineering &Applied Science

 The impossibility of knowing both the

precise location and %elocity ofsubatomic particle at the same time isknown as the 99999.

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  Uncer'ain'4 principle

General Engineering &

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General Engineering &Applied Science

An atom which has the greatest ability

to attract electron is

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  O4gen

General Engineering &

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General Engineering &Applied Science

If the %olume of the mole of gas

molecules remains constant$ loweringthe temperature will make thepressure

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  Increae

General Engineering &

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General Engineering &Applied Science

@hene%er you ha%e e2ual %olumes of

gases at the same temperature andpressure$ the %olume must.

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  C#n'ain e=6al n60:er #$par'icle

General Engineering &

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General Engineering &Applied Science

@hat pressure must be applied to

##mC of gas at "atm to reduce its%olume to "&&mC(

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/,/8a'0

General Engineering &

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How many moles of are present in

++.C of at 7T8(

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/,+ 0#le

General Engineering &

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Ge e a g ee g &Applied Science

A hole is to be punched out of plate ha%inga shearing strength of +& ksi. Thecompressi%e stress in the punch is limitedto & ksi. !ompute the maximum thicknessof plate from which a hole #. inches in

diameter can be punched.

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+,27 in

General Engineering &

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g gApplied Science

A hole is to be punched out of plate ha%inga shearing strength of +& ksi. Thecompressi%e stress in the punch is limitedto & ksi. If the plate is &.# inches thick$determine the diameter of the smallest

hole that can be punched.

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0.800 in

General Engineering &

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g gApplied Science

At what angular %elocity will the stress

in a rotating steel ring e2ual to "&U8a if its mean radius is ##& mm( Thedensity of the steel is /. Ug,mV3.

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1/ rad9

General Engineering &

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g gApplied Science

A pipe carry steam at 3. U8a has an outsidediameter of +& mm and a wall thickness of

"& mm. A gasket is inserted between theJange at one end of the pipe and a Jat plateuse to cap the end. How many +&>mm>diameter bolts must be used to hold the cap

on if the allowable stress in the bolts is &U8a$ of which U8a is the initial stress(

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72

General Engineering &

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g gApplied Science

A pipe carry steam at 3. U8a has an outsidediameter of +& mm and a wall thickness of

"& mm. A gasket is inserted between theJange at one end of the pipe and a Jat plateuse to cap the end. @hat circumferentialstress is de%eloped in the pipe(

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28,- %a

General Engineering &

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g gApplied Science

It is the maximum safe stress

that a material can carry

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working stress

General Engineering &

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g gApplied Science

It is the point at which there is

an appreciable elongation ofthe material without anycorresponding increase of load.

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 ield p#in'

General Engineering &

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g gApplied Science

 This component measures the

pulling )or pushing- actionperpendicular to the section.

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Aial $#rce

General Engineering &

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g gApplied Science

@hat is the theoretical

maximum %alue of 8oissonKsratio of any gi%en materialsubSected to a uniform triaxial

stress.

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79/

General Engineering &

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g gApplied Science

A steel bar & mm in diameter and # m

long is surrounded by a shell of castiron mm thick. !ompute the loadthat will compress the combined bar atotal of &. mm in the length of #m.

6or steel ; * #&& E8a$ and for cast iron; * "&& E8a

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192 kN

General Engineering &

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g gApplied Science

A solid steel shaft m long is stressedto & U8a when twisted through +degrees. sing E * 3 E8a$ computethe shaft diameter.

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7- 00

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General Engineering &

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g gApplied Science

'etermine the maximum shearingstress in a helical steel springcomposed of #& turns of #& mm>diamter wire on a mean radius of &mm when tha spring is supporting a

load of # k. se E * 3 E8a.

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7/+,1 %a

General Engineering &

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Applied Science

'etermine the elongation in a helicalsteel spring composed of #& turns of#& mm>diamter wire on a mean radiusof & mm when tha spring issupporting a load of # k. se E * 3

E8a.

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.,2 00

General Engineering &

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Applied Science

 These are components of the

total resistance to sliding theportion to one side of theexploratory section past the

other.

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Sear $#rce

General Engineering &

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Applied Science

@ho rst postulated that stress

is proportional to strain in"1/(

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R#:er' H##e

General Engineering &

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Applied Science

6irst material known to be used

by man.

 

R#c