Q42.Given below are two statements: Statement I: Boron is extremely hard indicating its high lattice energy. Statement II: Boron has highest melting and boiling point compared to its other group members. In the light of the above statements, choose the most appropriate answer from the options given below (1) Both Statement I and Statement II are incorrect (2) Statement I is correct but Statement II is incorrect (3) Both statement I and Statement II are correct (4) Statement I is incorrect but Statement II is correct
What This Question Tests
This question tests the understanding of the unique properties of Boron, specifically its hardness due to strong covalent bonding and its high melting and boiling points compared to other elements in Group 13.
Concepts Tested
📚 NCERT Sections This Tests
14.2 — Which Of The Statements Given In Exercise 14.1 Is True For P-Type
Physics Class 12 · Chapter 14
14.2 Which of the statements given in Exercise 14.1 is true for p-type semiconductos.
4.11 — Explain Giving Reasons:
Chemistry Class 11 · Chapter 4
4.11 Explain giving reasons: (i) Transition metals and many of their compounds show paramagnetic behaviour. (ii) The enthalpies of atomisation of the transition metals are high. (iii) The transition metals generally form coloured compounds. (iv) Transition metals and their many compounds act as good catalyst.
14.1 — In An N-Type Silicon, Which Of The Following Statement Is True:
Physics Class 12 · Chapter 14
14.1 In an n-type silicon, which of the following statement is true: (a) Electrons are majority carriers and trivalent atoms are the dopants. (b) Electrons are minority carriers and pentavalent atoms are the dopants. (c) Holes are minority carriers and pentavalent atoms are the dopants. (d) Holes are majority carriers and trivalent atoms are the dopants.
📋 Question Details
- Chapter
- p-block Elements
- Topic
- Group 13 elements (Boron family)
- Year
- 2023
- Shift
- 12 Apr Shift 1
- Q Number
- Q42
- Type
- Assertion Reasoning
- NCERT Ref
- Class 11 Chemistry Ch 11: The p-Block Elements
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