Physics
Mica is used in electrical appliances such as electric iron because mica is

a good conductor of heat but a bad conductor of electricity
a bad conductor of heat as well as electricity
a good conductor of heat as well as electricity
a bad conductor of heat but a good conductor of electricity

ANSWER DOWNLOAD EXAMIANS APP

Physics
In the gamma decay of a nucleus

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

ANSWER DOWNLOAD EXAMIANS APP