JEE Advanced · Chemistry · 11. s Block
The compound(s) formed upon combustion of sodium metal in excess air is (are)
- A \(\mathrm{Na}_2 \mathrm{O}_2\)
- B \(\mathrm{Na}_2 \mathrm{O}\)
- C \(\mathrm{NaO}_2\)
- D \(\mathrm{NaOH}\)
Answer & Solution
Correct Answer
(B) \(\mathrm{Na}_2 \mathrm{O}\)
Step-by-step Solution
Detailed explanation
Sodium on heating in air forms both normal oxide and peroxides.
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
- Isomers of hexane, based on their branching, can be divided into three distinct classes as shown in the figure.

The correct order of their boiling point isJEE Advanced 2014 Medium - In the nuclear transmutation , identify .JEE Advanced 2013 Medium
- For the following compounds the correct statement(s) with respect to nucleophilic substitution reactions is(are)
JEE Advanced 2017 Medium - of molal urea solution (density at ) is mixed with of a solution containing of urea. Both the solutions were prepared in the same solvent. The osmotic pressure (in torr) of the resulting at is
[Use : Molar mass of urea ; gas constant, ;
Assume,JEE Advanced 2023 Easy - In the reaction scheme shown below, and are the major products.

The correct structure ofJEE Advanced 2020 Hard - Assuming mixing is NOT operative, the paramagnetic species among the following isJEE Advanced 2014 Hard
More PYQs from JEE Advanced
- Paragraph:
Let \(O\) be the origin, and \(\overrightarrow{O X}, \overrightarrow{O Y}, \overrightarrow{O Z}\) be three unit vectors in the directions of the sides \(\overrightarrow{Q R}, \overrightarrow{R P}\), \(\overrightarrow{P Q}\), respectively, of a triangle \(P Q R\).
Question:
If the triangle \(P Q R\) varies, then the minimum value of
\(\cos (P+Q)+\cos (Q+R)+\cos (R+P)\) isJEE Advanced 2017 Easy - Upon heating with , the reagent(s) that give copper metal is/areJEE Advanced 2014 Medium
- An electron and a proton are moving on straight parallel paths with same velocity. They enter a semi-infinite region of uniform magnetic field perpendicular to the velocity. Which of the following statement(s) is/are true?JEE Advanced 2011 Easy
- A student performs a titration with different burettes and finds titre values of \(25.2 \mathrm{~mL}, 25.25 \mathrm{~mL}\), and \(25.0 \mathrm{~mL}\).
The number of significant figures in the average titre value isJEE Advanced 2010 Medium - The initial rate of hydrolysis of methyl acetate by a weak acid is of that by a strong acid , at . The of isJEE Advanced 2013 Hard
- Statement \(1 \mathrm{~Pb}^{4+}\) compounds are stronger oxidising agents than \(\mathrm{Sn}^{4+}\) compounds.
Statement 2 The higher oxidation states for the group 14 elements are more stable for the heavier members of the group due to 'inert pair effect'.JEE Advanced 2008 Medium