Fire Assay 1

Question 1

Fire assay is considered as
a) volumetric method
b) gravimetric
c) gasometric
d) wet method

Answer 1

b

Question 2

Gold is soluble in
a) Hcl
b) H2SO4
c) Hydroflouric acid
d) Aqua regia

Answer 2

d

Question 3

Flour is used in assaying as
a) flux
b) oxidizing agent
c) reducing agent
d) combines with Pb

Answer 3

c

Question 4

The step in assaying that forms the dore is
a) cuppellation
b) inquartation
c) partin
d) annealing

Answer 4

a

Question 5

Soda ash is a powerful
a) acid flux
b) neutral reagent
c) basic flux
d) combines with SiO2 to form slag

Answer 5

c

Question 6

This formula of iron oxide and silica FeO SiO2 is
a) monosilicate
b) bisilicate
c) subsilicate
d) sesquisilicate

Answer 6

b

Question 7

In fision, process is assaying the reagent that enhance fluidity is
a) soda ash
b) litharge
c) SiO2
d) borax

Answer 7

a

Question 8

The chiddy method is applicable in analyzing
a) cyanide
b) protective alkalinity
c) Au in cyanide solution
d) cyanicides

Answer 8

c

Question 8

The artificial sulfide formed in the dry way in assaying is
a) speiss
b) matte
c) slag
d) button

Answer 8

b

Question 9

An alloy sufficient in precious metals bearing economic significance is
a) bullion
b) dore
c) amalgam
d) button

Answer 9

a

Question 10

The method of assaying carried out in a shallow clay dish by oxidizing fusion is called
a) wet analysis
b) scorification
c) qualitative analysis
d) solid solvent extraction

Answer 10

b

Question 11

The assay of a gold bullion is expressed as
a) ppm
b) gm/MT
c) fineness
d) percent

Answer 11

c

Question 12

Slag factor is
a) ratio of the weight of the mineral to SiO2
b) Quantified wt. of slag to be produced
c) ratio of the oxygen in the acid component
d) borax to silicon ratio in the charge

Answer 12

c

Question 13

The element that causes frequent trouble in Ag assay is
a) Bi
b) Sb
c) Cu
d) Zn

Answer 13

a

Question 14

The element that causes frequent trouble in Ag assay is
a) Bi
b) Sb
c) Cu
d) Zn

Answer 14

a

Question 15

Slag in the process fusion becomes very viscous due to
a) insufficient finishing
b) insufficient fusion time
c) lacks acid fluxes
d) excess of SiO2

Answer 15

b

Question 16

One purpose of charge calculation is to
a) control size of bottom
b) reduce the PbO
c) Produce a glassy slag
d) increase life of crucible

Answer 16

a

Question 17

In assaying loaded carbon the oxidizing agent used in
a) Niter
b) Fe3O4
c) MnO
d) CaCO3

Answer 17

a

Question 18

The reducing power of pyrite when soda ash is added is
a) increased
b) remained constant
c) lowered
d) reduced to neutral

Answer 18

a

Question 19

An assay ton is
a) 20 gm
b) 29.199 gm
c) 26.93 gm
d) 30 gm

Answer 19

b

Question 20

An inquart is added to
a) control the size of the button
b) establish as ideal silver to gold ratio to enhance parting
c) makes the reduced Pb malleable
d) makes the dore ductile

Answer 20

b

Question 21

Silica is
a) basic flux
b) acid flux
c) neutral flux
d) borax to control size of button

Answer 21

b

Question 22

For sulfide ores, we use
a) niter
b) flour
c) pyrite
d) borax to control size of button

Answer 22

a

Question 23

The step where the Pb is oxidized is called
a) cuppellation
b) inquartation
c) parting
d) annealing

Answer 23

a

Question 24

Mercury vaporizes
a) 369 deg C
b) 1000 deg C
c) 350 deg C
d) 450 deg C

Answer 24

a

Question 25

The alloy of gold and silver produces after cupellation is
a) amalgam
b) dore
c) magnetic gold
d) cornet

Answer 25

b

Question 26

The reducing power of flour is
a) 10
b) 12
c) 15
d) 20

Answer 26

a

Question 27

To prepare a cupel, the principal component is
a) bone ash
b) cement
c) clay
d) alumina

Answer 27

a

Question 28

The ideal size of Pb button is
a) 25 gm
b) 30 gm
c) 35 gm
d) 40 gm

Answer 28

a

Question 29

The oxidizing power of niter is
a) 4
b) 5
c) 7
d) 8

Answer 29

a

Question 30

12 karat gold is
a) 50% Au
b) 60% Au
c) 70% Au
d) 90% Au

Answer 30

a