Science Quiz, KBC Quiz, KBC Questions, Multiple Choice Question Answers

Question: What was the first element to be produced artificially

1. Plutonium
   
2. Neptunium
   
3. Francium
   
4. Technetium
   

Incorrect Answer

Correct Answer
At only atomic number of 43, it is far lighter than all other artifically made elements.

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Question: What is the lightest element with an atomic symbol not related to its English name?

1. Potassium (K)
   
2. Sodium (Na)
   
3. Iron (Fe)
   
4. Tungsten (W)
   

Incorrect Answer

Correct Answer
Metallic sodium is priced at about 15 to 20 cents per lb in quantity. Reagent grade (ACS) sodium in January 1990 cost about $35 per lb. On a volume basis, it is the cheapest of all metals.

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Question: What is the lightest element of the ones below with an atomic symbol that is also a US state postal code?

1. Argon (AR)
   
2. Aluminum (AL)
   
3. Scandium (SC)
   
4. Calcium (CA)
   

Incorrect Answer

Correct Answer
Others include: Molybdenum (MO), Indium (IN), Lanthanum (LA), Neodymium (ND), Protactinium (PA), Mendelevium (MD), Meitnerium (MT). Neon {(NE;} Nebraska) is lighter than Aluminum, but I didn't put it in the list initially.

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Question: What is the heaviest of the naturally occuring Noble gases?

1. Radon
   
2. Xenon
   
3. Helium
   
4. Argon
   

Incorrect Answer

Correct Answer
Element 118 has been produced artificially and would fall under the Noble gas column.

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Question: Which chemical compound occurs naturally in tea and coffee and is a popular additive to soft drinks?

1. Cellulose
   
2. Nicotine
   
3. Maltose
   
4. Caffeine
   

Incorrect Answer

Correct Answer
Caffeine belongs to a class of organic compounds called alkaloids (as does nicotine). Caffeine is a powerful stimulant of the central nervous system. It is usually present in coffee in the amount of 100-150 mg per cup (of course in decaf, there is virtually none!). Like many alkaloids, caffeine acts as a poison in large quantities. The lethal dose of caffeine for adults is estimated at about 10 g, so unless you drink about 70-100 cups of coffee a day, you should be safe!

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Question: How many moons does Pluto have (found by year 2000)?

1. 32
   
2. 16
   
3. 4
   
4. 1
   

Incorrect Answer

Correct Answer
Pluto, like earth, has only one moon named Charon.

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Question: Which planet orbits the sun at a speed of 110,000 kph?

1. Earth
   
2. Venus
   
3. Jupiter
   
4. Mars
   

Incorrect Answer

Correct Answer
Earth is about 150,000,000 km away from the sun.

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Question: Which planet is 110 million km from the sun?

1. Earth
   
2. Mercury
   
3. Mars
   
4. Venus
   

Incorrect Answer

Correct Answer
That is the same as 70 million miles.

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Question: Which planet takes 248.5 earth years to go round the sun?

1. Neptune
   
2. Pluto
   
3. Uranus
   
4. Saturn
   

Incorrect Answer

Correct Answer
Pluto is also the furthest planet, in our solar system, to the sun.

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Question: A meteorite struck Antarctica in 2004. It was 30 feet wide. How far away was the climate affected by this strike?

1. Only a small section of Antarctica
   
2. South Africa and Argentina
   
3. The North Polar region
   
4. Other side of the planet
   

Incorrect Answer

Correct Answer
It scattered 2 million pounds of dust into the air. It also seeded rain clouds for miles around.

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