Question : Virtually treeless, sparse vegetation is found in:

Option 1: Taiga

Option 2: Alpine

Option 3: Tundra

Option 4: Chapparal

Question : The ash-grey soils of high-latitude coniferous forests a known as :

Option 1: Tundra soils 

Option 2: Podsols

Option 3: Grey-Brown soils

Option 4: Red and Yellow soils 

Question : The four sides of a quadrilateral are in the ratio of 2 : 3 : 4 : 5 and its perimeter is 280 metres. The length of the longest side is:

Option 1: 100 metres

Option 2: 150 metres

Option 3: 175 metres

Option 4: 180 metres

Question : The elevation angles of the top and bottom of a flag kept on a flagpost from a 30 metres distance are 45° and 30°, respectively. Height of the flag is: $\left (\text {taking} \;\sqrt{3}= 1.732 \right )$

Option 1: $12\sqrt{3}$ metres

Option 2: 15 metres

Option 3: 14.32 metres

Option 4: 12.68 metres

Question : A rectangular park, 60 metres long and 40 metres wide, has two concrete crossroads running in the middle of the park, and the rest of the park has been used as a lawn. If the area of the lawn is 2109 sq. metres, then the width of the road is:

Option 1: 3 metres

Option 2: 5 metres

Option 3: 6 metres

Option 4: 2 metres