GK
BIG BANG THEORY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The Cosmic Microwave Background radiation
|
|
|
The composition of stars/galaxies
|
|
|
Redshift
|
|
|
The Doppler Effect
|
Detailed explanation-1: -The law of conservation of mass states that matter cannot be created or destroyed. The law of definite proportions states that a given chemical compound always contains the same elements in the exact same proportions by mass.
Detailed explanation-2: -A given compound always contains exactly the same proportion of elements by weight can be explained by the Law of Constant Proportion. Hence this is an incorrect statement about the Law of Conservation of Mass.
Detailed explanation-3: -It states that during a chemical reaction, mass is neither created nor destroyed. Thus, the total mass of the substances before the reaction and the total mass of the substances after the reaction remain the same. Thus, no mass is lost during the chemical reaction, and the mass is conserved.