A mixture of gases containing 0.2 moles of O2, 0.3 moles of N2, and 0.5 moles of H2 is collected at STP. If 20% of the H2 escapes due to a leak, what is the final volume occupied by the remaining gas mixture?
22.4 L
20.16 L
17.92 L
24.64 L
Related Questions
During the primary treatment of sewage, solid particles that settle down are called
Activated sludge
Secondary sludge
Primary sludge
Anaerobic sludge
Which of the following plan has been initiated by the Ministry of Environment and Forests to protect rivers from water pollution?
Ganga action plan
Yamuna action plan
Both (1) and (2)
Neither (1) nor (2)
At STP, what is the volume occupied by one mole of an ideal gas?
11.2 L
22.4 L
33.6 L
44.8 L
Biochemical Oxygen Demand (BOD) in a river water
Has no relationship with concentration of oxygen in the water
Gives a measure of Salmonella in the water
Increases when sewage gets mixed with river water
Remains unchanged when algal bloom occurs
A flask containing a mixture of He and CH4 is maintained at STP. If the partial pressure of He is 0.4 atm, what is the mole fraction of CH4?
0.4
0.6
0.8
1.0
How many molecules are present in 22.4 L of an ideal gas at STP?
3.011 x 10²³
6.022 x 10²³
1.204 x 10²⁴
2.408 x 10²⁴
Which of the following represents the standard temperature at STP?
25°C
0°C
100°C
-273°C
Consider the following statement
I. Biochemical Oxygen Demand (BOD) represents the amount of dissolved oxygen that would be consumed if all the organic matter in 1 L of water were oxidized by microorganism
II. Low value of BOD means the water is either normal or less polluted by organic matter
III. High value of BOD means the water in highly polluted by organic matter
Which of statement given above are correct?
I and II
I and III
II and III
I, II and III
Consider the following statement
I. Biochemical Oxygen Demand (BOD) represents the amount of dissolved oxygen that would be consumed if all the organic matter in 1 L of water were oxidized by microorganism
II. Low value of BOD means the water is either normal or less polluted by organic matter
III. High value of BOD means the water in highly polluted by organic matter
Which of statement given above are correct?
I and II
I and III
II and III
I, II and III
Primary treatment is the
Physical removal of large and small particles from sewage
Biological removal of large and small particles from sewage
Both (1) and (2)
Chemical removal of large and small particles from sewage
