MCQ
Heavy water is
- AWater at ${4^o}C$
- ✓Compound of deuterium and oxygen
- CCompound of heavy oxygen and heavy hydrogen
- DWater, in which soap does not lather
✓
Answer
Correct option: B.
Compound of deuterium and oxygen
b
Heavy water is water that contains heavy hydrogen or deuterium. Deuterium differs from the hydrogen usually found in water, protium, in that each atom of deuterium contains a proton and a neutron. Heavy water may be deuterium oxide, $D _2 O$ or it may be deuterium protium oxide,$DHO$. Heavy water occurs naturally, although it is much less common than regular water.
Heavy water is water that contains heavy hydrogen or deuterium. Deuterium differs from the hydrogen usually found in water, protium, in that each atom of deuterium contains a proton and a neutron. Heavy water may be deuterium oxide, $D _2 O$ or it may be deuterium protium oxide,$DHO$. Heavy water occurs naturally, although it is much less common than regular water.
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
Column $I$ gives some devices and Column $II$ gives some process on which the functioning of these devices depend. Match the devices in Column $I$ with the processes in Column $II$ and indicate your answer by darkening appropriate bubbles in the $4 \times 4$ matrix given in the $ORS$.
→| Column $I$ | Column $II$ |
| $(A)$ Bimetallic strip | $(p)$ Radiation from a hot body |
| $(B)$ Steam engine | $(q)$ Energy conversion |
| $(C)$ Incandescent lamp | $(r)$ Melting |
| $(D)$ Electric fuse | $(s)$ Thermal expansion of solids |
One $10\, \,\,V, 60\, W$ bulb is to be connected to $100\, V$ line. The required induction coil has self inductance of value $(f = 50\,Hz)$
→Calculate $T_1$ and $T_2$
→A capacitor is made of a tlat plate of area $A$ and a second plate having a stair-like structure as shown in figure. If the area of each stair is $\frac{A}{3}$ and the height is $\mathrm{d}$, the capacitance of the arrangement is:
→A spherical soap bubble has in ternal pressure $P_0$ and radius $r_0$ and is in equilibrium in an enclosure with pressure ${P_1} = \frac{{8{P_0}}}{9}$ . The enclosure is gradually evacuated . Assuming temperature and surface tension of soap bubble to be fixed find the value of $\frac{{{\rm{final\,\, radius}}}}{{{\rm{initial\,\, radius}}}}$ of soap bubble
→For a thermionic emitter (metallic) if J represents the current density and T is its absolute temperature then the correct curve between ${\log _e}\frac{J}{{{T^2}}}$ and $\frac{1}{T}$ is
→A particle performs $SHM$ about $x = 0$ such that at $t = 0$ it is at $x = 0$ and moving towards positive extreme. The time taken by it to go from $x = 0$ to $x = \frac{A}{2}$ is ..... times the time taken to go from $x = \frac{A}{2}$ to $A$. The most suitable option for the blank space is
→A small mass attached to a string rotates on a frictionless table top as shown. If the tension in the string is increased by pulling the string cauusing the radius of the circular motion to decrease by a factor of $2$ , the kinetic energy of the mass will
→Two charge $ + \,q$ and $ - \,q$ are situated at a certain distance. At the point exactly midway between them
→A particle moving in a circle of radius $R$ with uniform speed takes time $T$ to complete one revolution. If this particle is projected with the same speed at an angle $\theta$ to the horizontal, the maximum height attained by it is equal to $4 R$ . The angle of projection $\theta$ is then given by :
→