Physics
Why does bleeding occur through the nose in high mountainous regions ?

The blood pressure of a person increases at high altitudes
The pressure of blood in capillaries is greater than the outside pressure
The pressure at high altitudes is greater than that on the plains
The blood pressure fluctuates and finally decreases drastically

ANSWER DOWNLOAD EXAMIANS APP

Physics
In the gamma decay of a nucleus

Neither the mass number nor the atomic number of the nucleus changes
The mass number of the nucleus does not change whereas its atomic number changes
Both the mass number and the atomic number of the nucleus change
The mass number of the nucleus changes whereas its atomic number does not change

ANSWER DOWNLOAD EXAMIANS APP