Solution:
Mount Everest is a mountain. There have never been any volcanic eruptions in the Himalayas, and it is highly unlikely there will be in the near future. There is no active lava source within the mountain range.

Solution:
Most of the people in the world live in lowland areas except those in Central and Western Africa.

Solution:
Active vertical and lateral erosion in the lower course of the rivers is not favourable for the formation of delta. Favourable conditions are Active vertical & lateral erosion in upper course of the river to provide extensive sediments. Coast should be sheltered preferably tideless & no strong current at right angle to the mouth of the river washing away the sediments. Sea adjoining the delta should be shallow or else the load will disappear in deep waters.

Solution:
The meeting or warm and cold currents in the ocean gives rise to Fog. The air above warm ocean currents is warm and air above cold ocean currents is cool. When cold and warm ocean current meet, the warm ocean current condenses after getting in contact with cold air and it results into fog.

Solution:
Madagascar is the largest island. Area: 587,713 sq km (226,917 sq miles), Population: 22,005,222, Population density: 33/km2 (85/sq miles), Location: Africa. Madagascar is the fourth largest island in the world, the largest island in the Indian Ocean, and an incredibly diverse island with huge swathes of virtually uninhabited land.

Solution:
Singapore is not a member of SAARC. SAARC stands for South Asian Association for Regional Co-operation. The members of SAARC are Afghanistan, Pakistan, India, Nepal, Bhutan, Bangladesh, Sri Lanka & Maldives.

Solution:
The largest amongst the following seas is The South China Sea. The South China Sea is a marginal sea that is part of the Pacific Ocean, encompassing an area from the Karimata and Malacca Straits to the Strait of Taiwan of around 3,500,000 square kilometres.