Prelims Power Play 30 August 2023

1. Maharashtra is thinking of using cloud seeding. Which of the following chemical is most commonly used in it?

2. Birds play an important role in ecosystem by performing how many of the following functions

1. Aiding in seed dispersal and pollination,
2. Acting as predators and scavengers.
3. Indicator of surrounding environments
4. Balance the species population by feeding them like: Rodents, insects etc.

Select the correct answer?

3. With reference to the Pacific Decadal Oscillation (PDO) and ENSO cycle, consider the following statements:

1. Compared to the ENSO cycle, PDO is a relatively short term fluctuation of temperatures in the Pacific Ocean.
2. Negative PDO combined with El-Nino brings drought like situation in India.

Which of the above statement/s is/are correct? Select the correct answer using the code given below:

4. Consider the following

1. African apple snail (achatinafulica)
2. Partheniumhysterophorus
3. Mesquite (prosopisjuliflora)
4. Water hyacinth
5. Amazon sailfin catfish

How many of the above is/are invasive alien species in India? Select the correct answer using the code given below:

5. Consider the following countries

1. Gabon
2. Central African Republic
3. Uganda
4. Kenya
5. Somalia

Select the correct answer: