English
Tamil Nadu Board of Secondary EducationHSC Science Class 11

Assertion: Generally alkali and alkaline earth metals form superoxides. Reason: There is a single bond between O and O in superoxides.

Advertisements
Advertisements

Question

Assertion: Generally alkali and alkaline earth metals form superoxides.

Reason: There is a single bond between O and O in superoxides.

Options

  • both assertion and reason are true and reason is the correct explanation of assertion

  • both assertion and reason are true but reason is not the correct explanation of assertion

  • assertion is true but reason is false

  • both assertion and reason are false

MCQ
Advertisements

Solution

both assertion and reason are false

shaalaa.com
  Is there an error in this question or solution?
Chapter 5: Alkali and Alkaline Earth Metals - Evaluation [Page 152]

APPEARS IN

Samacheer Kalvi Chemistry - Volume 1 and 2 [English] Class 11 TN Board
Chapter 5 Alkali and Alkaline Earth Metals
Evaluation | Q I. 14. | Page 152

RELATED QUESTIONS

Beryllium and magnesium do not give colour to flame whereas other alkaline earth metals do so. Why?


Which one of the alkaline earth metal carbonates is thermally the most stable?


Assertion: BeSO4 is soluble in water while BaSO4 is not

Reason: Hydration energy decreases down the group from Be to Ba and lattice energy remains almost constant.


Write a balanced chemical equation for the following chemical reaction.

Rubidium with oxygen gas


Alkaline earth metal (A), belongs to 3rd period reacts with oxygen and nitrogen to form compound (B) and (C) respectively. It undergoes metal displacement reaction with AgNO3 solution to form compound (D). Identify A, B, C and D.


Explain the important common features of Group 2 elements.


Identify the correct formula of halides of alkaline earth metals from the following.

(i) BaCl2.2H2O

(ii) BaCl2.4H2O

(iii) CaCl2.6H2O

(iv) SrCl2.4H2O


Discuss the trend of the following:

The solubility and the nature of oxides of Group 2 elements.


Assertion (A): Beryllium carbonate is kept in the atmosphere of carbon dioxide.

Reason (R): Beryllium carbonate is unstable and decomposes to give beryllium oxide and carbon dioxide.


Given below are two statements:

Statement I: Colourless cupric metaborate is reduced to cuprous metaborate in a luminous flame.

Statement II: Cuprous metaborate is obtained by heating boric anhydride and copper sulphate in a non-luminous flame.

In the light of the above statements, choose the most appropriate answer from the options given below.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×