minquiz national oral quiz 2009 with answers 090828

8/21/2019 Minquiz National Oral Quiz 2009 With Answers 090828

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Council for Mineral Technology

Copyrig ht Mintek 2009

MINQUIZ 2009

NATIONAL COMPETITION

ORAL QUIZ

24 July 2009


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PRACTICE

QUESTION


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PRACTICE QUESTION

1. If you put 4 scientists, 3 engineers, 2

managers, 1 accountant and 1 secretary(generally referred to as a Committee)

together in a poorly-ventilated room, on

average how long will it take for them to

reach consensus?

A. 10 minutes

B. 10 hours

C. 10 days

D. Never


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MULTIPLE

CHOICE


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MULTIPLE CHOICE

1. An object with an initial positive velocity is

shot vertically upward into the air. Which

of the following correctly describes the

velocity and acceleration of the object at

its maximum height?

velocity accelerationA. positive positive

B. zero zero

C. negative negative

D. zero negative


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MULTIPLE CHOICE

2. Which of the molecules drawn below

contains polar covalent bonds but is nota

polar molecule?

A. I only

B. III only

C. II and IV only

D. I and III only


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MULTIPLE CHOICE

3. What occurs to the iodine ion during the

following reaction?

2I-(aq) + Br2(l) 2Br-(aq) + I2(s)

A. It is oxidized & its oxidation number increases

B. It is oxidized & its oxidation number decreases

C. It is reduced & its oxidation number increases

D. It is reduced & its oxidation number decreases


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MULTIPLE CHOICE

4. The roots of an equation is

For which value of awill there be only onesolution?

A. 8

B. 16

C. -8 [2 x (-8) + 16 = 0]D. 4

1624 a


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5. What is the missing number in the sequence:

13 7 18 10 5 ? 9 1 12 6

A. 14 (working inwards, sum of L & R = 19)

B. 15

C. 16D. 17

MULTIPLE CHOICE



MULTIPLE CHOICE

6. What is the next letter in the following odd

sequence?

O T T F F S S E ?

A. E

B. FC. N (First letter of One, Two, Three, etc)

D. G



MULTIPLE CHOICE

7. Which space shuttle recently carried

out repairs to the Hubble Telescope?

A. Discovery

B. Endeavour

C. Atlantis

D. Challenger



MULTIPLECHOICE

8. What is the name of the layer of the

atmosphere closest to the Earth?

A. Thermosphere

B. Troposphere

C. Mesosphere

D. Stratosphere



MULTIPLE CHOICE

9. Which of the following metals has magnetic

properties?

A. Nickel

B. Zinc

C. Copper

D. Aluminium



MULTIPLE CHOICE

10. Which geological feature contains the

highest known concentration of gold

deposits?

A. Bushveld Complex

B. Phalaborwa Igneous Complex

C. Witwatersrand BasinD. Transvaal Supergroup



END OF

MULTIPLE CHOICE



RAPID FIRE:

WESTERN CAPE



Metallic oxides are basic and non-metallic

oxides are acidic. NO2is a non-metallic oxide.

RAPID FIRE: WESTERN CAPE

1. Which of the following substances wont

form a basic solution when added to water?

A. Na2O

B. CaO

C. Rb2O

D. NO2




2. Find the value of the resistance which

would limit the current flow to 3 A when

connected to a 9 V supply.

A. 27

B. 0.33

C. 3 D. 0.033




3. Materials through which images cannot

be seen, but through which light can

pass are called

A. Luminous

B. Transparent

C. TranslucentD. Opaque




4. What metal ore is mined at Thabazimbi?

Answer: Iron



Answer: 8


5. How many carbon atoms are present in a

molecule of octane?




6. What did James Chadwick discover?

Answer: The neutron




7. In which constellation will you find the

star Sirius?

Answer: Canis Major




8. What metal element would you find in

talc?

Answer: Magnesium




9. Which is a sedimentary rock? Slate or

limestone?

Answer: Limestone




10. Solve for

x

if 094 2 x

A. none of the answers below

B.

C.

D.

2

3x

23x

4

9x

imaginaryis49 xx



END OF RAPID

FIRE:WESTERN CAPE


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RAPID FIRE:

NORTH WEST


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RAPID FIRE: NORTH WEST

1. Which of the following compounds will

form an acidic solution when dissolved in

water?

A. Cs2O

B. SO2

C. Rb2OD. SrO

Non-metallic oxides are acidic and non-metallic

oxides are acidic. SO2is a non-metallic oxide. All

others are metallic oxides.


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RAPID FIRE: NORHT WEST

2. A 100 resistor is connected to a 20 V

supply. What current flows?

A. 2 000 A

B. 5 A

C. 0.02 A

D. 0.2 A


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3. A transparent material is one through

which

A. Objects can be seen clearly

B. Light cannot pass

C. Light travels in straight lines

D. Light is bent


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4. What metal is mined at Phalaborwa?

Answer: Copper


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molecule of butane?

Answer: 4


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6. What did J. J. Thomson discover?

Answer: The electron


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7. In which constellation will you find the star

Rigel?

Answer: Orion


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8. What metal element would you find in topaz?

Answer: Aluminium


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9. Which is a metamorphic rock? Marble or

sandstone?

Answer: Marble


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then xcould be equal to

A. 4

B. -4

C. 3D. All of the above

10. If 034 yx and 3y


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212 x

END OF RAPID

FIRE:NORTH WEST


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212 x

RAPID FIRE:

LIMPOPO


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RAPID FIRE: LIMPOPO

1. Which of the following substances

wontturn red litmus blue?

A. A solution of sodium hydroxide in water

B. Water into which carbon dioxide has been

bubbled

C. A solution of strontium oxide in waterD. Dishwater which contains ammonia

A solution of carbon dioxide in water forms

carbonic acid which is acidic and will not turn

red litmus blue. All other substances are basic.


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RAPID FIRE: LIMPOPO

2. What voltage supply is needed to

provide a current of 2 A through a 40

resistor?

A. 20 V

B. 0.5 V

C. 80 VD. 0.05 V


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RAPID FIRE: LIMPOPO

3. Materials that allow light to pass, but

through which objects cannot be clearly

seen are said to be

A. Luminous

B. Transparent

C. TranslucentD. Opaque


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RAPID FIRE: LIMPOPO

4. What is the main metal mined at

Rustenburg?

Answer: Platinum


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RAPID FIRE: LIMPOPO


molecule of benzene?

Answer: 6


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RAPID FIRE: LIMPOPO

6. What did Wilhelm Rontgen discover?

Answer: X-rays


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RAPID FIRE: LIMPOPO


Castor?

Answer: Gemini


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fluorite?

RAPID FIRE: LIMPOPO

Answer: Calcium


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RAPID FIRE: LIMPOPO

9. Which is a metamorphic rock? Granite or

slate?

Answer: Slate


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RAPID FIRE: LIMPOPO

10. If

A. 0

B. y

C. 2y

D. -2y

xyx then14.2


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END OF RAPID

FIRE:LIMPOPO


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RAPID FIRE:

GAUTENG

RAPID FIRE GAUTENG


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RAPID FIRE: GAUTENG

1. Which of the following gases isntacidic?

A. N2B. CO2

C. NO2D. H2S

All other gases are acidic. Nitrogen is neutral.

RAPID FIRE GAUTENG


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RAPID FIRE: GAUTENG

2. What will be the resistance of a resistor

when a current of 2 A flows with a volt

supply of 6 volts?

A. 12

B. 0.33

C. 3 D. 300

RAPID FIRE GAUTENG


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RAPID FIRE: GAUTENG

3. Bodies that can radiate light are called

A. IrradiatorsB. Luminous

C. Non-Luminous

D. Reflectors

RAPID FIRE GAUTENG


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RAPID FIRE: GAUTENG

4. What metal is mined at Sishen?

Answer: Iron

RAPID FIRE GAUTENG


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RAPID FIRE: GAUTENG


molecule of methyl propane?

Answer: 4

RAPID FIRE GAUTENG


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RAPID FIRE: GAUTENG

6. What did Alexander Fleming discover?

Answer: Penicillin

RAPID FIRE GAUTENG


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RAPID FIRE: GAUTENG


Pollux?

Answer: Gemini

RAPID FIRE: GAUTENG


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RAPID FIRE: GAUTENG


ilmenite?

Answer: Iron

RAPID FIRE: GAUTENG


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RAPID FIRE: GAUTENG

9. Which is an igneous rock? Dolomite or

basalt?

Answer: Basalt

RAPID FIRE: GAUTENG


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RAPID FIRE: GAUTENG

10. If calculate the maximum

value of

A. C.

B. D.5

1

2

1

13

1

9

1

9412 xx

B

942 xxA


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END OF RAPID

FIRE:GAUTENG


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RAPID FIRE:

EASTERN CAPE

RAPID FIRE: EASTERN CAPE


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1. Which of the following substances will turn

blue litmus red?

A. A solution of calcium hydroxide

B. Dishwater containing ammonia

C. Vinegar

D. Sodium bicarbonate dissolved in water



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2. What current would flow through a

resistor of 40 connected to a 10 V

supply?

A. 400 A

B. 0.25 A

C. 4 AD. 0.025 A



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3. In order for us to see non-luminous

bodies, the bodies must ____ light into

our eyes.

A. Refract

B. Radiate

C. ReflectD. Diffract



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4. What metal is mined at Welkom?

Answer: Gold



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5. How many carbon atoms are present in

a molecule of acetic acid?

Answer: 2



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6. What did Hans Christian Oersted discover?

Answer: Magnetic field around an electrical

conductor (electromagnetism).



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7. In which constellation will you find the

star Regulus?

Answer: Leo



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rutile?

Answer: Titanium



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9. Which is a metamorphic rock? Slate or

dolomite?

Answer: Slate



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10. If ?1

then51

2

2 x

x

x

x

A. 25

B. 24

C. 23

D. 22


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END OF

RAPID FIRE


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FASTEST

FINGER

FASTEST FINGER


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FASTEST FINGER

1. As the distance of an object above the

surface of the earth is greatly increased, the

weight of the object would

A. Increase

B. Double

C. Remain the sameD. Decrease

FASTEST FINGER


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S S G

2. What is the chemical formula of calcite?

A. Ca(OH)2B. CaCO3

C. Ca(HCO3)2D. CaO

FASTEST FINGER


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3. What metals are used to make the alloy

solder?

A. Tin and lead

B. Tin and copper

C. Lead and Aluminium

D. Copper and Aluminium

FASTEST FINGER


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4. Which of these metals has the highest

density?

A. Gold

B. Lead

C. Mercury

D. Silver

FASTEST FINGER


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5. Which of the following elements has the

smallest atomic radius?

A. I

B. At

C. Br

D. Cl

Cl is top on the halogen group and atomic

radius increases down group. So Cl is smallest.

FASTEST FINGER


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6. What is the value of A?

x 1 2 3 4 5

y 3 10 29 66 A

A 121

B 123

C 125D 127

FASTEST FINGER


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7. Referring to the right-angled triangle, the

value of will be

A. Smaller thanx

B. Equal tox

C. Smaller than 1

D. Greater than 1

cossin

xba

xab

xa

xb .....1cossin

FASTEST FINGER


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8. What happens during gold elution?

A. A solution of gold is dilutedB. Activated charcoal containing gold ions

is washed with NaOH

C. Activated charcoal is used to adsorb

gold ionsD. Electric current is used to concentrate

the solution

FASTEST FINGER


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9. Which of these gases doesntform acid

rain?

A. Carbon dioxide

B. Methane

C. Sulfur dioxide

D. Nitrogen dioxide

FASTEST FINGER


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10. In which of these star constellations will

you see a galaxy without a telescope?

A. Aries

B. Orion

C. Andromeda

D. Aquarius


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END OF

FASTEST FINGER


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FASTEST FINGER:

EXTRA TIME

FASTEST FINGER: EXTRA TIME


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1. Which of the following elements is

the most electronegative?

A. C

B. O

C. B

D. N

Oxygen, since electronegativity increases left

to right along the Periodic Table.



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2. In triangle ABC, DE is drawn parallel to

BC. The value of xis

A. 2

B. 3

C. 4

D. 5



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3. In ferric chloride, in what state is the iron

atom?

A. Fe2+

B. Fe2-

C. Fe3+

D. Fe3-



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4. Which is the most abundant noble gas

in the Earths atmosphere?

A. Nitrogen

B. Argon

C. Helium

D. Neon



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5. Who first discovered natural radioactivity?

A. BecquerelB. Rontgen

C. Rutherford

D. Curie


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END OF

FASTEST FINGER:EXTRA TIME


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FASTEST FINGER:

SUDDEN DEATH

FASTEST FINGER: SUDDEN DEATH


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1. Which of the following elements has the

largest atomic radius?

A. N

B. Ne

C. F

D. O

Nitrogen, since atomic radius decreases along

the Periodic Table.



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2. A coin is tossed and a die is thrown. What

is the probability of getting an uneven

number and tails on the coin?

A. C.

B. D.

2

1

8

1

12

1

4

1

41

2

1

2

1

2

1

2

1

,, tailsunevenPtailsPunevenP



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3. What is the colour of a sodium dichromate

solution?

A. Blue

B. Colourless

C. Orange

D. Purple



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4. Which of the following gold mines is the

deepest?

A. Western Deep Levels

B. Moab Khutsong

C. Deelkraal

D. Driefontein



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5. Which of these scientists has an element

named after him?

A. Planck

B. Bohr

C. Dalton

D. Thomson

Element 107 Bh Bohrium


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THE END!

minquiz national oral quiz 2009 with answers 090828

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