4471: In the above map, the black marks show the distribution of
(a) Asbestos
(b) Gypsum
(c) Limestone
(d) Mica
4472: Weights of two pieces, one of gold and one of silver each weighing 100 gm were recorded on a spring balance. Then they were fully immersed in a liquid bath, by letting them hang through a light thread tied to the balance. Compare the recorded weights of the two pieces under that condition. Then
(a) The gold piece will weigh more than the silver piece
(b) The silver piece will weigh more than the gold piece
(c) The weights of the two pieces will be equal
(d) Nothing can be said without knowing the density of the liquid bath
4473: In which one among the following is the speed of sound maximum ?
(a) Air at 100 degree celcius
(b) Air at 0 degree celcius
(c) Wood
(d) Water
4474: Consider the following Pairs : Wetlands Confluence of rivers
1. Harike Wetlands : Confluence of Beas and Satluj/Sutlej
2. Keoladeo Ghana : Confluence of National Park Banas and Chambal
3. Kolleru Lake : Confluence of Musi and Krishna
Which of the above pairs is/are correctly matched?
(a) 1 only
(b) 2 and 3
(c) 1 and 3
(d) 1, 2 and 3
4475: What would happen if phytoplankton of an ocean is completely destroyed for some reason?
1. The ocean as a carbon sink would be adversely affected.
2. The food chains in the ocean would be adversely affected.
3. The density of ocean water would drastically decrease.
Select the correct answer using the codes given below :
(a) 1 and 2 only
(b) 2 only
(c) 3 only
(d) 1, 2 and 3