Chemistry Test 44

The noble gases are a group of chemical elements with very similar properties: under standard conditions, they are all odorless, colorless, monatomic gases, with a very low chemical reactivity. How many Noble gases occur naturally ?

Question 1/11

Sodium: Natrium

Pottassium : Kalium

Mercury :Hydrargyrum

Arsenic : Stibium

Question 2/11

amount of organic compounds in water

amount of oxygen in water

amount of oxygen in a chemical

amount of oxygen used in a oxygenation process

Question 3/11

amount of organic compounds in water

amount of oxygen in water

amount of oxygen in a chemical

amount of oxygen used in a oxygenation process

Question 4/11

Iron

Zinc

Copper

Tin

Question 5/11

5

6

7

8

Question 6/11

Aluminum

Chlorine

Calcium

Zinc

Question 7/11

Diamond

Dry ice

Table salt

All are ionic solids

Question 8/11

It is found in the upper atmosphere filters potentially damaging ultraviolet light from reaching the Earth’s surface

It is lighter than oxygen that is why it is found in the upper atmosphere

It is an allotrope of oxygen

All are correct

Question 9/11

Oxidation takes place at Cathode and Reduction Takes Place at Anode

Oxidation takes place at Anode and Reduction Takes place at Cathode

Both Oxidation and Reduction takes place at cathode

Both Oxidation and Reduction takes place at Anode

Question 10/11

Chlorine

FLourine

Bromine

All of them have same electronegativity

Question 11/11

Density of Diamond is higher than that of Graphite

Diamond is chemically unreactive while graphite is mild reactive

Both Diamond and Graphite are good conductors of electricity

None of the above