MCQ
Solid $C{O_2}$ is known as dry ice, because
- AIt melts at $0\,^°C$
- BIt evaporates at $40\,^°C$
- ✓It evaporates at $ - 78\,^\circ C$ without melting
- DIts boiling point is more than $199\,^°C$
✓
Answer
Correct option: C.
It evaporates at $ - 78\,^\circ C$ without melting
c
(c) Solid $C{O_2}$ is knows as dry ice because it evaporates at $-78\,^°C$ without changing in the liquid state.
(c) Solid $C{O_2}$ is knows as dry ice because it evaporates at $-78\,^°C$ without changing in the liquid state.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Carbon atoms in the compound ${(CN)_4}{C_2}$ are
→Which of the following has minimum reactivity towards nucleophiles ?
$3 O _{2}( g ) \rightleftharpoons 2 O _{3}( g )$
→for the above reaction at $298 K , K _{ c }$ is found to be $3.0 \times 10^{-59}$. If the concentration of $O _{2}$ at equilibrium is $0.040 M$ then concentration of $O _{3}$ in $M$ is ...... .
The density (in $g\, mL^{-1}$) of a $3.60\, M$ sulphuric acid solution that is $29\%$ $H_2SO_4$ (molar mass $= 98\, g\, mol^{- 1}$) by mass will be
→The disappearance of the characteristic purple colour of $KMn{O_4}$ in its reaction with an alkene is the test for unsaturation. It is known as
→Total number of stereoisomers of the compound $1$ -bromo- $3$ -chlorocyclobutane is
→To prepare $A$ from $B$ the correct sequence of reagents can be
→Electron affinity depends on
Which of the following reacts with sodium with the elimination of hydrogen
Which of the following is an endothermic reaction