List of top Chemistry Questions on Oxygen

Which from following carbohydrates produces double quantity of glucose on hydrolysis per mole as compared with sucrose?
Which from following carbohydrates produces double quantity of glucose on hydrolysis per mole as compared with sucrose?
Which of the following pair of oxides is neutral?
An organic compound contains 37.5% C, 12.5% H and the rest oxygen. What is the empirical formula of the compound?
Which element is not present in Nessler's reagent?
Delicate balance of \(CO_2\) and \(O_2\) is not disturbed by:
The bond order of peroxide ion is x. The bond order of superoxide ion is:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: Polluted water may have a value of BOD of the order of 17 ppm.

Reason R: BOD is a measure of oxygen required to oxidise both the bio-degradable and non-biodegradable organic material in water.

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

C(s)+O2(g)→CO2(g)+400 kJ
C(s)+\(\frac{1}{2}\) O2(g)→CO(s)+100 kJ
When coal of purity 60% is allowed to burn in presence of insufficient oxygen, 60% of carbon is converted into ‘CO’ and the remaining is converted into ‘CO2’. The heat generated when 0.6 kg of coal is burnt is _______.

The formal charge on central oxygen atom in ozone is
On passing silent electric discharge through oxygen in an ozonizer, 5.5 mol % of oxygen is converted to ozone. How many moles of O$_2$ and O$_3$ result when 35 moles of O$_2$ is originally present?
\(\mathrm{KO}_2\) is used in space and submarines because it
An extremely hot copper wire reacts with steam to give:
Highest electron affinity is shown by
Which of the following oxides of chlorine is obtained by passing dry iodine over silver perchlorate at $ 190{}^\circ C $ ?
Oxygen is obtained by heating:
Given below are two statements:
Statement I : Chlorine can easily combine with oxygen to form oxides; and the product has a tendency to explode
Statement II : Chemical reactivity of an element can be determined by its reaction with oxygen and halogens
In the light of the above statements, choose the correct answer from the options given below
$ {SnCl2}$ gives a precipitate with a solution of $ {HgCl2}$. In this process $ {HgCl2}$ is
$ {SnCl2 + 2HgCl2 -> }$$\underset{\text{White ppt.}}{ {(A)}}$ $ {(A) + SnCl2 -> }$$\underset{\text{Grey}}{ {(B)}}$ A and B are