Is Matter Around Us Pure? — Science STD 9 — Question

If present climatic conditions are analysed with reference to the past climatic conditions, we can predict climatic changes of the future.

CPR helps to bring the circulation to normal.

State whether the following statements are true or false:
Thomson proposed that the nucleus of an atom contains protons and neutrons.

State whether the following statement is true or false:
Solid carbon dioxide is stored under low pressure.

State whether the following statements are true or false:
The anode rays obtained from all the gases consist of positively charged particles called protons.

The following statements are true or false:
The force of gravitation between two objects depends on the nature of medium between them.

Climate plays a very important role in the formation and enrichment of soil.

Any meteorological model depends upon the inter-relationships between parameters used in that model and the results expected from it.

The following statements are true or false:
The acceleration due to gravity acting on a freely falling body is directly proportional to the mass of the body.

State whether the following statement is true or false:
Radioactive isotope of iodine is used for making the medicine called tincture iodine.