AP EAMCET · Chemistry · s Block Elements
Choose the correct statement from the following.
(i) Beryllium is not readly attacked by acids because of the presence of an oxide film on the surface of the metal.
(ii) \(\mathrm{BeO}\) is an amphoteric oxide.
(iii) Beryllium exhibits coordination number more than four.
(iv) Beryllium oxide is purely acidic in nature.
- A (i)
- B (ii)
- C (iii)
- D (iv)
Answer & Solution
Correct Answer
(A) (i)
Step-by-step Solution
Detailed explanation
Be is not readily attacked by acids due to formation of oxide layer. The surface of beryllium metal is covered with a thin layer of oxide that helps protect the metal from attack by air. It does not oxidise in air even at \(600^{\circ} \mathrm{C}\).…
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
- Match the following.
AP EAMCET 2022 Easy - Which of the following statements are correct?
i. \(\left[\mathrm{Mn}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{MnCl}_6\right]^{3-}\) both are paramagnetic
ii. Both \(\left[\mathrm{NiCl}_4\right]^{2-},\left[\mathrm{Ni}(\mathrm{CO})_4\right]\) are tetrahedral and diamagnetic
iii. \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}\) is inner orbital complex, but \(\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right]^{2+}\) is outer orbital complexAP EAMCET 2023 Medium - The reaction of ‘tert-butyl methyl ether’ with one equivalent of HI givesAP EAMCET 2021 Medium
- Which reaction(s) among the following produce dinitrogen?
AP EAMCET 2021 Medium - Benzene and toluene form an ideal solution over the entire range of composition. The vapour pressure of pure benzene and toluene at \(T(\mathrm{~K})\) are \(50 \mathrm{~mm} \mathrm{Hg}\) and \(40 \mathrm{~mm} \mathrm{Hg}\) respectively. What is the mole fraction of toluene in vapour phase when \(117 \mathrm{~g}\) of benzene is mixed with \(46 \mathrm{~g}\) of toluene? (molar mass of benzene and toluene are 78 and \(92 \mathrm{~g} \mathrm{~mol}^{-1}\) respectively)AP EAMCET 2018 Hard
- Which of the following statement is false?AP EAMCET 2021 Hard
More PYQs from AP EAMCET
- The average power generated by a 90 kg mountain climber who climbs a summit of height 600 m in 90 minutes is \(\left(\right.\) Acceleration due to gravity \(\left.=10 \mathrm{~ms}^{-2}\right)\).AP EAMCET 2024 Easy
- Consider the cell reaction, at 300 K
\(\mathrm{A}(s)+\mathrm{B}^{2+}(a q) \rightleftharpoons \mathrm{A}^{2+}(a q)+\mathrm{B}(s)\)
Its \(\mathrm{E}^{\circ}\) is 1.0 V . The \(\Delta_{\mathrm{r}} \mathrm{H}^{\circ}\) of the reaction is \(-163 \mathrm{~kJ} \mathrm{~mol}^{-1}\). What is \(\Delta_{\mathrm{r}} \mathrm{S}^{\circ}\) (in J K\({ }^{-1}\) ) of the reaction?
\(\left(\mathrm{F}=96500 \mathrm{C} \mathrm{~mol}^{-1}\right)\)AP EAMCET 2024 Medium - In \(\triangle A B C\), if \(A, B, C\) are in arithmetic progression then
\(\sqrt{\mathrm{a}^2-\mathrm{ac}+\mathrm{c}^2} \cdot \cos \left(\frac{\mathrm{~A}-\mathrm{C}}{2}\right)=\)AP EAMCET 2025 Medium - If there is an error of \(\pm 0.04 \mathrm{~cm}\) in the measurement of the diameter of a sphere, then the approximate percentage error in its volume, when the radius is \(10 \mathrm{~cm}\), isAP EAMCET 2014 Hard
- A body executes simple harmonic motion under the action of a force \(F_1\) with a time period \(\frac{4}{5} \mathrm{~s}\). If the force is changed to \(F_2\) it executes SHM with time period \(\frac{3}{5} \mathrm{~s}\). If both the forces \(F_1\) and \(F_2\) act simultaneously in the same direction on the body, its time period in seconds isAP EAMCET 2002 Hard
- If , thenAP EAMCET 2022 Medium