Subject :NSO Class : Class 9
Read the given statements and mark the correct option.
Statement 1 : Solid CO2 changes its state when exposed to air.
Statement 2 : CO2 undergoes sublimation.
A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true and statement 2 is false.
D Both statements 1 and 2 are false.
CHanges its state is not explaned
Ans 1:
Class : Class 9
very true
Ans 2:
Class : Class 9
Option A - Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
Because,
when solid CO2 is exposed to air it changes into gaseous state i.e. it undergoes "SUBLIMATION". Therefore option A is correct.....