MCQ
The control rod in a nuclear reactor is made of
- AUranium
- ✓Cadmium
- CGraphite
- DPlutonium
✓
Answer
Correct option: B.
Cadmium
b
(b) Control rods are used in nuclear reactors to control the fision rate of uranium and plutonium. They are composed of chemical elements such as boron, silver, indium and cadmium that are capable of absorbing many neutrons without themselves fissioning
(b) Control rods are used in nuclear reactors to control the fision rate of uranium and plutonium. They are composed of chemical elements such as boron, silver, indium and cadmium that are capable of absorbing many neutrons without themselves fissioning
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
A microammeter has a resistance of $100\,\Omega $ and full scale range of $50\,\mu A$. It can be used as a voltmeter or as a higher range ammeter provided a resistance is added to it. Pick the correct range and resistance combination
→Why the current does not rise immediately in a circuit containing inductance
The amplitude of $15 \sin (1000 \pi t )$ is modulated by $10 \sin (4 \pi t )$ signal. The amplitude modulated signal contains frequency(ies) of
→$(A)$ $500\ \,Hz$ $(B)$ $2\ \ ,Hz$ $(C)$ $250\ \,Hz$ $(D)$ $498\ \ ,Hz$ $(E)$ $502\ \ ,Hz$
Choose the correct answer from the options given below:
While a capacitor remains connected to a battery and dielectric slab is applied between the plates, then
A uniform electric field and a uniform magnetic field are produced, pointed in the same direction. An electron is projected with its velocity pointing in the same direction
A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected in the region such that its velocity is pointed along the direction of fields, then the electron
An empty thick conducting shell of inner radius $a$ and outer radius $b$ is shown in figure.If it is observed that the inner face of the shell carries a uniform charge density $-\sigma$ and the surface carries a uniform charge density $ '\sigma '$
→If the charge $q_A$ is slowly moved inside the shell, then choose the statement$(s)$
In the circuit shown below, a long time after the key $K$ is closed, the reading in the ammeter is $20 \,mA$. What was the reading (in $mA$) immediately after it was closed.
→A glass convex lens $\left(\mu_{ g }=1.5\right)$ has a focal length of 8 cm when placed in air. What would be the focal length of the lens when it is immersed in water $\left(\mu_{ w }=1.33\right)$
→The magnetic dipole moment of a current carrying coil does not depend upon: