MCQ
Snow is more heat insulating than ice, because
- ✓Air is filled in porous of snow
- BIce is more bad conductor than snow
- CAir is filled in porous of ice
- DDensity of ice is more
✓
Answer
Correct option: A.
Air is filled in porous of snow
a
(a)Air is poor conductor of heat.
(a)Air is poor conductor of heat.
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
If in $a$ coil rate of change of area is $\frac{{5\,metr{e^2}}}{{milli\,second}}$ and current become $1\, amp$ form $2$ $amp$ in $2 × 10^{-3} sec$. If magnetic field is $1$ Tesla then self inductance of the coil is......$H$
→The dimensions of impulse are equal to that of
Match List $I$ with List $II$
→| LIST$-I$ | LIST$-II$ |
| $A$ $AM$ Broadcast | $I$ $88-108\,MHz$ |
| $B$ $FM$ Broadcast | $II$ $540-1600\,kHz$ |
| $C$ Television | $III$ $3.7-4.2\,GHz$ |
| $D$ Satellite Communication | $IV$ $54\,MHz-590\,MHz$ |
Choose the correct answer from the options given below:
If number of molecules of ${H_2}$ are double than that of ${O_2}$, then ratio of kinetic energy of hydrogen and that of oxygen at $300 \,K$ is
→A particle with total mechanical energy, which is small and negative. Its under the influence of a one dimensional potential $U(x)=x^{4} / 4-x^{2} / 2 \,J$, where $x$ is (in metre). At time $t=0 \,s$, it is at $x=-0.5 \,m$. Then, at a later time it can be found
→A diamagnetic material in a magnetic field moves
An ideal gas is taken around the cycle $ABCA$ as shown in the $P-V $ diagram. The net work done by the gas during the cycle is equal to
→A boy whose mass is $50\,kg$ stands on a spring balance inside a lift. The lift starts to ascent with an acceleration of $2\,m{s^{ - 2}}.$ The reading of the machine or balance $(g = 10\,m{s^{ - 2 }})$ is ........ $kg$
→In a transverse wave, the particles of the medium:
If the refractive indices of crown glass for red, yellow and violet colours are $1.5140, 1.5170$ and $1.5318$ respectively and for flint glass these are $1.6434, 1.6499$ and $1.6852$ respectively, then the dispersive powers for crown and flint glass are respectively
→