Test 10 Questions easa-drone, no time limit

1 - The payload, compared to a 'typical' quadricopter:
2 - What is the ground temperature according to this METAR: EHAM 011525Z 27015KT 230V290 9999 FEW038 18/09 Q1016 NOSIG= ?
3 - How can we define relative humidity?
4 - In case of high air humidity:
5 - The weighing process of the UAV:
6 - Why is fog dangerous for flying a UAV?
7 - When air is compressed due to atmospheric pressure:
8 - What is the reason for the radiation haze?
9 - OPEN CATEGORIES OPERATIONS do not present any risks considering their nature
10 - Definition of stability of an aircraft: