Question:
Identify the correct statements about Boron.
I. It has high melting point
II. It has high density
III. It has high electrical conductivity
IV. B-10 isotope of it has high ability to absorb neutrons
Identify the correct statements about Boron.
I. It has high melting point II. It has high density III. It has high electrical conductivity IV. B-10 isotope of it has high ability to absorb neutrons
I. It has high melting point II. It has high density III. It has high electrical conductivity IV. B-10 isotope of it has high ability to absorb neutrons
Show Hint
The isotope \(^{10}B\) is widely used in nuclear reactors because of its excellent neutron absorption ability.
Updated On: Jun 15, 2026
- I, II only
- II, III only
- III, IV only
- I, IV only
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Analyze Statement I.
Boron is a hard solid with strong covalent bonding in its crystal structure.
Due to these strong bonds, boron possesses a very high melting point.
Hence, Statement I is correct.
Step 2: Analyze Statement II.
Boron is actually a low-density element compared to many metals.
It is not known for high density.
Hence, Statement II is incorrect.
Step 3: Analyze Statement III.
Pure boron is not a good conductor of electricity at ordinary temperature.
It behaves more like a semiconductor rather than a highly conducting metal.
Hence, Statement III is incorrect.
Step 4: Analyze Statement IV.
The isotope \(^{10}B\) has a very high neutron absorption capacity.
Because of this property, boron is used in nuclear reactors as a control rod material.
Hence, Statement IV is correct.
Step 5: Determine the correct combination.
The correct statements are
I and IV only
Step 6: Final conclusion.
Hence, the correct answer is
\[ \boxed{\text{I, IV only}} \]
Boron is a hard solid with strong covalent bonding in its crystal structure.
Due to these strong bonds, boron possesses a very high melting point.
Hence, Statement I is correct.
Step 2: Analyze Statement II.
Boron is actually a low-density element compared to many metals.
It is not known for high density.
Hence, Statement II is incorrect.
Step 3: Analyze Statement III.
Pure boron is not a good conductor of electricity at ordinary temperature.
It behaves more like a semiconductor rather than a highly conducting metal.
Hence, Statement III is incorrect.
Step 4: Analyze Statement IV.
The isotope \(^{10}B\) has a very high neutron absorption capacity.
Because of this property, boron is used in nuclear reactors as a control rod material.
Hence, Statement IV is correct.
Step 5: Determine the correct combination.
The correct statements are
I and IV only
Step 6: Final conclusion.
Hence, the correct answer is
\[ \boxed{\text{I, IV only}} \]
Was this answer helpful?
0
0
Top AP EAMCET Chemistry Questions
- If the $pK_a$ of acetic acid and $pK_b$ of dimethylamine are $4.76$ and $3.26$ respectively, the pH of dimethyl ammonium acetate solution is
- In the first order thermal decomposition of $C _{2} H _{5} I (g) \longrightarrow C _{2} H _{4}(g)+ HI (g)$, the reactant in the beginning exerts a pressure of $2$ bar in a closed vessel at $600 \,K$. If the partial pressure of the reactant is $0.1$ bar after $1000$ minutes at the same temperature the rate constant in $\min ^{-1}$ is $(\log 2=0.3010)$
- Isopropyl benzene on aerial oxidation followed by acid hydrolysis of the resulting compound yields
- Sodium nitrite is reacted with $H_2SO_4$ to form $NaHSO_4, HNO_3$, water and $X$. Gold is dissolved in aqua-regia to form water, $AuCl^{-}_4$ and $Y. X$ and $Y$ are respectively
- The average translational kinetic energy of a molecule in a gas becomes equal to $0.69\, eV$ at a temperature about [Boltzmann constant = $1.38 \times 10^{-23} \; J \; K^{-1}$]
View More Questions
Top AP EAMCET Group 13 Elements Questions
Top AP EAMCET Questions
- If $\int \cos x . \cos 2x . \cos 5x dx = A \; \sin 2x + B \sin 4x + C \sin 6x + D \sin 8x + k $ (where $k$ is the arbitrary constant of integration), then $\frac{1}{B} + \frac{1}{C} = $
- If $k$ is one of the roots of the equation $x^2 - 25x + 24 = 0 $ such that $A = \begin{bmatrix}1&2&1\\ 3&2&3\\ 1&1&k\end{bmatrix} $ is a non-singular matrix, then $A^{-1}$ =
- If only $\frac{1}{51}^{th}$ ot the main current is to be passed through a galvanometer then the shunt required is $R_1$ and if only $\frac{1}{11}^{th}$ of the main voltage is to be developed across the galvanometer, then the resistance required is $R_2$. Then $\frac{R_2}{R_1} =$
- If $p$ and $q$ are respectively the global maximum and global minimum of the function $f(x) = x^2 e^{2x}$ on the interval $[-2, 2]$ , then $pe^{-4} + qe^4 = $
- If $\displaystyle\sum^n_{k - 1} \tan^{-1} \left( \frac{1}{k^2 + k + 1} \right) = \tan^{-1} (\theta) $ , then $\theta$ =
View More Questions