AP EAMCET · Chemistry · p Block Elements (Group 13 & 14)
Identify the correct statements from the following :
I. \(\mathrm{Ga}_2 \mathrm{O}_3\) is an amphoteric oxide.
II. The dimer of aluminium chloride has three \(\mathrm{Al}-\mathrm{Cl}-\mathrm{Al}\) bridge bonds.
III. Boron is very hard refractory solid of high melting temperature.
- A I, II only
- B I, III only
- C II, III only
- D I, II, III
Answer & Solution
Correct Answer
(B) I, III only
Step-by-step Solution
Detailed explanation
(I) \(\mathrm{Ga}_2 \mathrm{O}_3\) is an amphoteric oxide is the correct statement as it reacts with acid and base both, as shown below : Reaction with an acid \[ \mathrm{Ga}_2 \mathrm{O}_3+6 \mathrm{HCl} \longrightarrow 2 \mathrm{GaCl}_3+3 \mathrm{H}_2 \mathrm{O} \] Reaction…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- In which of the following, Keratin, a fibrous protein is absent?AP EAMCET 2022 Easy
- \(8 \mathrm{~g}\) of a metal reacted with oxygen to form \(9 \mathrm{~g}\) of its oxide. What is the weight (in \(\mathrm{g}\) ) of the metal required to react with \(8 \mathrm{~g}\) of hydrogen? \((\mathrm{H}=1.0)\)AP EAMCET 2017 Easy
- In which of the following, ortho/para substitution by an electrophile is very facile?AP EAMCET 2010 Hard
- When the lead storage battery is in use (during discharge) the reaction that occurs at the anode isAP EAMCET 2025 Medium
- The number of nucleophiles in the following list is \(\mathrm{CH}_3 \mathrm{NH}_2, \mathrm{CH}_3 \mathrm{CHO}, \mathrm{C}_2 \mathrm{H}_4, \mathrm{CH}_3 \mathrm{SH}\)AP EAMCET 2024 Medium
- Reaction of phenol with which of the following reagents form picric acid?AP EAMCET 2023 Easy
More PYQs from AP EAMCET
- Three concentric spherical metallic shells A, B and C of radii \(\mathrm{a}=7 \mathrm{~cm}, \mathrm{~b}=17 \mathrm{~cm}\) and ' \(\mathrm{c}\) ' \((a < b < c)\) have surface charge densities \(\sigma,-\sigma\) and \(\sigma\) respectively. If \(A\) and \(C\) are at the same potential, then the value of ' \(\mathrm{c}\) ' isAP EAMCET 2017 Hard
- If the tangent drawn to the curve \(\mathrm{y}=\mathrm{x}^3\) at a point \((\alpha, \beta)\) cuts again the curve at another point \(\left(\alpha_1, \beta_1\right)\), then \(\frac{\beta_1}{\beta}=\)AP EAMCET 2023 Medium
- In a poisson distribution with unit mean, \(\sum_{x=0}^{\infty}|x-\bar{x}| P(X=x)=(\bar{x}\) is the mean of the distribution)AP EAMCET 2019 Medium
- Let \(\overrightarrow{\mathrm{OA}}=2 \hat{\mathrm{i}}-3 \hat{\mathrm{j}}+\hat{\mathrm{k}}, \overrightarrow{\mathrm{OB}}=\hat{\mathrm{i}}-4 \hat{\mathrm{j}}-3 \hat{\mathrm{k}}\) and \(\overrightarrow{\mathrm{OC}}=-3 \hat{\mathrm{i}}+\hat{\mathrm{j}}+2 \hat{\mathrm{k}}\) be the position vectors of three points, \(\mathrm{A}, \mathrm{B}, \mathrm{C}\) respectively. If \(\mathrm{G}\) is the centroid of triangle \(\mathrm{ABC}\), then \(\mathrm{BC}^2+\mathrm{CA}^2+\mathrm{AB}^2+9(\mathrm{OG})^2=\)AP EAMCET 2023 Easy
- A golf ball of mass '\(m\)' has a speed of \(50 \mathrm{~ms}^{-1}\), If the speed can be measured within accuracy of \(2 \%\), the uncertainty in the position isAP EAMCET 2024 Easy
- The abscissae of two points \(P, Q\) are the roots of the equation \(2 x^2+4 x-7=0\) and their ordinates are the roots of the equation \(3 x^2-12 x-1=0\). Then the centre of the circle with \(P Q\) as a diameter isAP EAMCET 2019 Medium