English
Karnataka Board PUCPUC Science Class 11

Cement, the important building material is a mixture of oxides of several elements. Besides calcium, iron and sulphur, oxides of elements of which of the group (s) are present in the mixture?

Advertisements
Advertisements

Question

Cement, the important building material is a mixture of oxides of several elements. Besides calcium, iron and sulphur, oxides of elements of which of the group (s) are present in the mixture?

Options

  • Group 2

  • Groups 2, 13 and 14

  • Groups 2 and 13

  • Groups 2 and 14

MCQ
Advertisements

Solution

Groups 2, 13 and 14

Explanation:

Cement contains elements of group 2 (Ca), group 13 (Al) and group 14 (Si).

shaalaa.com
  Is there an error in this question or solution?
Chapter 11: The p-block Elements - Multiple Choice Questions (Type - I) [Page 136]

APPEARS IN

NCERT Exemplar Chemistry [English] Class 11
Chapter 11 The p-block Elements
Multiple Choice Questions (Type - I) | Q 15 | Page 136

RELATED QUESTIONS

How can you explain higher stability of BClas compared to TlCl3?


What do you understand by inert pair effect?


Write a balanced equation for B2H6 + NH3 → ?


The geometry of a complex species can be understood from the knowledge of type of hybridisation of orbitals of central atom. The hybridisation of orbitals of central atom in [Be(OH)4] and the geometry of the complex are respectively.


Which of the following oxides is acidic in nature?


In the structure of diborane ______.


Explain why the following compounds behave as Lewis acids?

BCl3


Explain why the following compounds behave as Lewis acids?

AlCl3


Aluminium dissolves in mineral acids and aqueous alkalies and thus shows amphoteric character. A piece of aluminium foil is treated with dilute hydrochloric acid or dilute sodium hydroxide solution in a test tube and on bringing a burning matchstick near the mouth of the test tube, a pop sound indicates the evolution of hydrogen gas. The same activity when performed with concentrated nitric acid, reaction doesn’t proceed. Explain the reason.


Explain the following:

Tl (NO3)3 acts as an oxidising agent.


Match the species given in Column I with properties given in Column II.

Column I Column II
(i) Diborane (a) Used as a flux for soldering metals
(ii) Galluim (b) Crystalline form of silica
(iii) Borax (c) Banana bonds
(iv) Aluminosilicate (d) Low melting, high boiling, useful for measuring high temperatures
(v) Quartz (e) Used as catalyst in petrochemical industries

Describe the general trends in the following properties of the elements in Groups 13 and 14.

Ionisation enthalpy


Describe the general trends in the following properties of the elements in Groups 13 and 14.

Metallic character


Describe the general trends in the following properties of the elements in Groups 13 and 14.

Oxidation states


Account for the following observations:

PbO2 is a stronger oxidising agent than SnO2 


A nonmetallic element of group 13, used in making bullet proof vests is extremely hard solid of black colour. It can exist in many allotropic forms and has unusually high melting point. Its trifluoride acts as Lewis acid towards ammonia. The element exihibits maximum covalency of four. Identify the element and write the reaction of its trifluoride with ammonia. Explain why does the trifluoride act as a Lewis acid.


Taking stability as the factor, which one of the following represents the correct relationship?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×