Formation of most of the clouds is in
1.troposphere
2.stratosphere
3.mesosphere
4.thermosphere
How much cooler does the air get for every 1 km increase in altitude in the troposphere?
1.2 degrees
2.6.5 degrees
3.8 degrees
4.10 degrees
Which of the following have an impact on brain development in human beings especially among children?
1.chlorofluorocarbons (CFCs)
2.methane
3.carbon monoxide
4. lead compounds
Which of the following is produced when dead plant material decays in the absence of air? methane carbon monoxide
1. chlorofluorocarbons (CFCs)
2.methane
3.carbon monoxide
4.lead compounds
An allotropic form of oxygen comprising three oxygen atoms is called
1. ozone
2.oxidation
3. oxidizing agent
4.reducing agent
Anything that destroys some part of the environment is called
1.dirt
2.virus
3.pollutant
4.bacteria
Approximately, what percentage of water vapor is contained by the air in the tropical rain forest?
1.0.01
2.0.02
3.0.03
4.0.04
Group of chemically unreactive compounds that are commonly used as solvents are called
1.chlorofluorocarbons (CFCs)
2.functional groups
3.alkyl groups
4.lead compounds
Height of stratosphere is
1. 0-12 Km
2.12-50 Km
3.50-80 Km
4.above 80 Km
Height of thermosphere is
1. 50 Km
2. 80 Km
3. above 80 Km
4.30 Km
Height of troposphere is
1.10 Km
2.12 Km
3.50 Km
4.80 Km
Height of troposphere is
1.10 Km
2.12 Km
3.50 Km
4.80 Km
How much higher can be the temperature inside a greenhouse as compared to the outside?
1.20 °C higher
2.10 °C to 15 °C higher
3. 5 °C higher
4.25 °C higher
If silk clothes are left in the open air for a week or so, their color fades because of
1. sulphur dioxide is converted into sulphur trioxide
2.dirt
3.carbon monoxide
4.nitrogen oxides
Majority of the UV rays are screened out by
1.oxygen
2.nitrogen
3.ozone
4.carbon
Minimum temperature of the troposphere is
1. 17 °C
2.−55 °C
3.−5 °C
4.1800 °C
Ozone formation and destruction are powered by
1. oxygen gas
2.atomic oxygen
3.ultraviolet radiation
4.chlorine gas
Percentage of hydrogen in the air is
1. 0.99
2.0.8
3.0.5
4.0.25
The atmosphere is divided into how many layers?
1.Two
2.Three
3.four
4.Five
The lower layer of the thermosphere is
1.ionosphere
2.exosphere
3.mesosphere
4.stratosphere
The occurrence of weather is in
1. troposphere
2.stratosphere
3.mesosphere
4.thermosphere
The outer layer of the thermosphere is
1.ionosphere
2.exosphere
3.mesosphere
4.stratosphere
The pH of normal rainwater is
1.4
2.5
3.5.6
4.6.6
The temperature of the outer mesosphere is
1. 93 °C
2.−93 °C
3.;5 °C
4.−5 °C
The thermosphere is divided into how many layers?
1.Two
2.Three
3.four
4.Five
What is meant by the term 'meso'?
1.top
2.middle
3.turning
4.changing
What is meant by the term 'tropo'?
1. top
2.first
3.high
4.turning
What is the color of nitrogen dioxide?
1.colorless
2.pink
3.brown
4.reddish brown
What is the source of lead compounds?
1.aerosol sprays foams
2.exhaust fumes of motor vehicles
3.incomplete burning of wood
4.none of above
What is the term used for the envelope of gases and water vapor surrounding the planet earth?
1.air
2.atmosphere
3.environment
4.biome
Which of the following causes headache and dizziness and can even cause death if inhaled for a long time?
1.sulphur dioxide
2.carbon dioxide
3.nitrogen dioxide
4.carbon monoxide
Which of the following comes mainly due to the combustion of fuel used in motor vehicles?
1. chlorofluorocarbons (CFCs)
2.methane
3.carbon monoxide
4.lead compounds
Which of the following has the lowest percentage in the air?
1. krypton
2.argon
3.hydrogen
4.helium
Which of the following is a powerful irritant which can aggravate the symptoms of people who suffer from respiratory disorders?
1.sulphur dioxide
2.carbon monoxide
3.oxides of nitrogen
4.carbon dioxide
Which of the following is an excellent heat absorber and causes global warming?
1.chlorofluorocarbons (CFCs)
2.methane
3. carbon monoxide
4.lead compounds
Which of the following is further divided into two layers?
1.troposphere
2.stratosphere
3.mesosphere
4.thermosphere
Which of the following is not true about carbon monoxide?
1.it is poisonous
2. it is insoluble in water
3.it is an air pollutant
4. it can cause death
Which of the following is not true about nitrogen dioxide?
1. it is reddish brown
2.it has pungent odor
3.it is insoluble in water
4.it is toxic
Which of the following is not true about sulfur dioxide?
1.it is colorless
2.it is odourless
3. it is an air pollutant
4.it causes breathing difficulties
Which of the following is produced when electrical discharges pass through oxygen in the air?
1.chlorofluorocarbons
2.methane
3.ozone
4. lead compounds
Which of the following is responsible for the rise in temperature in the stratosphere?
1. position of stratosphere
2.height of stratosphere
3.ozone
4.sunlight
Which of the following is the fourth layer of atmosphere as one moves upwards from the Earth's surface?
1.troposphere
2.stratosphere
3.mesosphere
4.thermosphere
Which of the following is the second layer of atmosphere as one moves upwards from the Earth's surface?
1.troposphere
2.stratosphere
3.mesosphere
4.thermosphere
Which of the following is the Third layer of atmosphere as one moves upwards from the Earth's surface?
1.troposphere
2.stratosphere
3.mesosphere
4.thermosphere
Which of the following is true about carbon monoxide?
1.it is poisonous
2.it is insoluble in water
3.it is not an air pollutant
4.it cannot cause death
Which of the following is true about carbon monoxide?
1.it is poisonous
2.it is insoluble in water
3. it is not an air pollutant
4.it cannot cause death
Which of the following is true about incineration?
1.it consumes all combustible materials
2.it is a clean process
3.it does not produce air pollution
4.it does not generate odor
Which of the following is true about nitrogen dioxide?
1.it is colorless
2.it is odourless
3.it is soluble in water
4.it is soluble in oxygen
Which of the following is true about ozone?
1. light blue in colour
2.odourless
3.not harmful
4.not a pollutant
Which of the following is true about sulfur dioxide?
1. it is colorless
2.it is odourless
3. it is not an air pollutant
4.it does not cause breathing difficulties
Which two main gases are produced when you burn a piece of wood?
1. oxygen and nitrogen
2.carbon dioxide and oxygen
3.carbon dioxide and carbon monoxide
4.carbon dioxide and nitrogen