Assertion: Combustion reactions are also called exothermic oxidation reactions.
Reason: During combustion reaction oxygen is removed with large
amount of heat.
(a)assertion and reason are true and R is correct explanation of the
assertion.
(b)Both A and R are true, but R is not the correct explanation of the
assertion.
(c) A is true, but R is false.
(d)A is false, but R is true.

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies. molten iron has a density of 7.0g/cm cubed. in its solid state, iron has a density of 8.0g/cm cubed.

How are calculation for velocity and speed different

Will give brainliest! which statement best describes the difference between strong nuclear forces and weak nuclear forces? weak nuclear forces are involved when certain types of atoms break down. strong nuclear forces are responsible for holding atoms' nucleus together. weak nuclear forces hold bonds between atoms together. strong nuclear forces hold together the nucleus of an atom. strong nuclear bonds prevent atoms from falling apart. weak nuclear bonds prevent compounds from falling apart. strong nuclear forces are involved in breaking electrons from their shells. weak nuclear forces hold protons in the nucleus.