Question : Identify the sentence that correctly uses the indefinite article.

Option 1: Cloud seeding involves use of chemicals that target rain-bearing clouds above a catchment area such as an river, reservoir or an lake.

Option 2: Cloud seeding involves use of chemicals that target rain-bearing clouds above a catchment area such as a river, reservoir or a lake.

Option 3: Cloud seeding involves use of chemicals that target rain-bearing clouds above an catchment area such as a river, reservoir or an lake.

Option 4: Cloud seeding involves use of chemicals that target rain-bearing clouds above an catchment area such as an river, reservoir or a lake.

Question : The chemicals most commonly used for cloud seeding or artificial rain making is/are:

Option 1: silver iodide

Option 2: sodium chloride

Option 3: dry ice or frozen carbon dioxide

Option 4: All the above

Question : Which series of satellites carrying a Very High-Resolution Radiometer (VHRR) provides valuable observations of temperature, cloud cover, wind and related weather phenomena?

Option 1: IRS series

Option 2: GSAT series

Option 3: INSAT series

Option 4: SROSS series

Question : Select the most appropriate meaning of the underlined idiom in the following sentence.
A wise man remains aware of fair-weather friends.

Option 1: A person from an area of pleasant weather

Option 2: A person with good knowledge of weather

Option 3: A helpful person

Option 4: A person not reliable in difficult time

Question : Directions: If air is called green, green is called blue, blue is called sky, sky is called yellow, yellow is called water, and water is called pink then what is the colour of a clear sky?

Option 1: Sky

Option 2: Water

Option 3: Blue

Option 4: Yellow