The main oxides formed on combustion of $Li, Na$ and $K$ in excess of air are,respectively:
- A$Li_2O_2, Na_2O_2$ and $KO_2$
- B$Li_2O, Na_2O_2$ and $KO_2$
- C$Li_2O, Na_2O$ and $KO_2$
- D$LiO_2, Na_2O_2$ and $K_2O$
Explore More
Similar Questions
$A$ metal $X$ on heating in a stream of nitrogen gives $Y$. $Y$ on reaction with ${H_2}O$ gives a colorless gas which,when passed through a $CuSO_4$ solution,gives a blue color. What is $Y$?
Medium
View SolutionMatch the elements given in Column-$I$ with the colour they impart to the flame given in Column-$II$.
Column-$I$ Column-$II$ $A$. $Cs$ $1$. Apple green $B$. $Na$ $2$. Violet $C$. $K$ $3$. Brick red $D$. $Ca$ $4$. Yellow $E$. $Sr$ $5$. Crimson red $F$. $Ba$ $6$. Blue
| Column-$I$ | Column-$II$ |
|---|---|
| $A$. $Cs$ | $1$. Apple green |
| $B$. $Na$ | $2$. Violet |
| $C$. $K$ | $3$. Brick red |
| $D$. $Ca$ | $4$. Yellow |
| $E$. $Sr$ | $5$. Crimson red |
| $F$. $Ba$ | $6$. Blue |
Medium
View SolutionWhat is sodium amalgam and how is it obtained?
Easy
View SolutionWhich of the following salts form hydrates? $CaCl_2$ $(I)$,$NaCl$ $(II)$,$LiCl$ $(III)$,$BaCl_2$ $(IV)$,$KCl$ $(V)$
Arrange the following compounds in the increasing order of their thermal stability. Identify the correct sequence.
$I - K_2CO_3, II - MgCO_3, III - CaCO_3, IV - BeCO_3$
$I - K_2CO_3, II - MgCO_3, III - CaCO_3, IV - BeCO_3$
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo