The gas X is only about 20 parts out of 100 parts of air in the atmosphere. It is needed for decomposition of organic matter. The gas X is
A
Carbon dioxide
B
Water vapour
C
Oxygen
D
Nitrogen
Text Solution
Verified by Experts
Air contains about 21% of oxygen. Organic matter gets decomposed with the help of oxygen.
Topper's Solved these Questions
NSO QUESTION PAPER 2018-19 SET B
SCIENCE OLYMPIAD FOUNDATION |Exercise ACHIEVERS SECTION|1 Videos
NSO QUESTION PAPER 2018-19 SET A
SCIENCE OLYMPIAD FOUNDATION |Exercise ACHIEVERS SECTION|2 Videos
NSO QUESTION PAPER 2019-20 SET - B
SCIENCE OLYMPIAD FOUNDATION |Exercise ACHIEVERS SECTION|3 Videos
Similar Questions
Explore conceptually related problems
A colourless gas X forms a brown coloured gas when mixed with air. The gas X is
Air is a mixture of various gases. One of the gases is 21% part of the air and is essential for the survival of human beings. This gas is
1/125th part of nitrogen gas isolated from atmosphere did not combine with any other substance due to
Consider the cyclic process ABCA, shown in, performed on a sample of 2.0 mol if an ideal gas. A total of 1200 J if heat is withdrawn from the sample in the process. Find the work done by the gas during the part BC.
Which of the following is incorrect about ozone ? i. The bad ozone is found in the upper part of atmosphere ii. Thickness is measured in terms of Dobson units iii. Ozone gas is formed by action on UV rays on molecular oxygen iv. Ophthalmic problems may increase with ozone depletion
When 500 calories heat is given to the gas X in an isobaric process, its work done comes out as 142.8 calories . The gas X is
SCIENCE OLYMPIAD FOUNDATION -NSO QUESTION PAPER 2018-19 SET B-ACHIEVERS SECTION
