Question : Dry ice is

Option 1: Solid ammonia

Option 2: Solid sulphur dioxide

Option 3: Dry carbon dioxide

Option 4: Solid carbon dioxide

Question : Clouds float in the atmosphere because of their

Option 1: low pressure

Option 2: low density

Option 3: low viscosity

Option 4: low temperature

Question : Oxides of _____ and _____ dissolve in rainwater and form an acid called acid rain.

Option 1: Phosphorous, Sulphur

Option 2: Sulphur, Nitrogen

Option 3: Carbon dioxide, Methane

Option 4: Calcium, Magnesium

Question : Comprehension:

In the following passage, some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each number.

Human activities are changing Earth's natural greenhouse 1.________. Burning fossil fuels like coal and oil puts 2._______ carbon dioxide into our atmosphere. NASA has 3.________ increase in the amount of carbon dioxide and some other greenhouse gases in 4.__________ atmosphere. Too much of these greenhouse gases can 5._________ Earth's atmosphere to trap more and more heat. This causes Earth to warm up.

Question:

Select the most appropriate option to fill in the blank No. 1.

Option 1: effect

Option 2: affect

Option 3: aspect

Option 4: impact

Question : Comprehension:
In the following passage, some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each number.

Human activities are changing Earth's natural greenhouse 1. _________. Burning fossil fuels like coal and oil puts 2. _________carbon dioxide into our atmosphere. NASA has 3.__________increase in the amount of carbon dioxide and some other greenhouse gases in 4. ___________atmosphere. Too much of these greenhouse gases can 5. __________Earth's atmosphere to trap more and more heat. This causes Earth to warm up.

Question:
Select the most appropriate option to fill in the blank No. 2.

Option 1: much

Option 2: more

Option 3: many

Option 4: most