Physics
The rice is cooked more quickly in a pressure cooker because

None of these
It is covered.
Less quantity of water is used.
Water boils at a higher temperature under pressure.

ANSWER DOWNLOAD EXAMIANS APP

Physics
It is more difficult to walk on a sandy road than on a concrete road because

the friction between sand and feet is less than that between concrete and feet.
the friction between sand and feet is more than that between concrete and feet.
the sand is grainy but concrete is smooth.
sand is soft and concreter is hard.

ANSWER DOWNLOAD EXAMIANS APP

Physics
In the gamma decay of a nucleus

Both the mass number and the atomic number of the nucleus change
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
The mass number of the nucleus changes whereas its atomic number does not change

ANSWER DOWNLOAD EXAMIANS APP