Inner core is solid due to

1. high temperature
2. high pressure
3. high density
4. low pressure

Which of the following rocks and mineral composition is correct for Continental crust?

1. Basalt, Si, Al.
2. Granite, Si, Ma.
3. Granite, Si, Al.
4. Basalt, Granite, Si, Ma.

Which of the following discontinuity is found between crust & mantle?

1. Conrad
2. Gutenberg
3. Mohorovicic
4. Lehmann

Give reasons for the following:

Core is called Nife.