Consider the following statements regarding pyrolysis:1. It is an irreversible chemical change brought about by the action of heat in oxygen-free atmosphere.2. Range of temperature is 500°C to 1000°C.3. Internal heating causes organic matter to decompose physically and chemically rather than burn.4. It is a highly exothermic process.Which of the above statements are correct?

Consider the following statements regarding pyrolysis:1. It is an irre

1.	Consider the following statements regarding pyrolysis:1. It is an irreversible chemical change brought about by the action of heat in oxygen-free atmosphere.2. Range of temperature is 500°C to 1000°C.3. Internal heating causes organic matter to decompose physically and chemically rather than burn.4. It is a highly exothermic process.Which of the above statements are correct?
A.	1, 2, 3 and 4
B.	1, 3 and 4 only
C.	2 and 4 only
D.	1, 2 and 3 only
Answer» E.

Discussion

No Comment Found

Related MCQs

A wastewater treatment plant disposes of its effluent in a surface stream. Characteristics of the stream and effluent are shown below.ParameterWaste waterStream waterWaste water mix stream waterFlow (m3/sec)0.24 Dissolved oxygen, mg/L17 BOD5 at 20°C, mg/L1002 Oxygen consumption rate (K1 at 20°C) (1/day)0.20.20.23Oxygen reaeration rate (K2 at 20°C) (1/day)-0.30.3For 20°C stream water temperature, the equilibrium concentration of oxygen = 9.17 mg/L. Assuming no temperature correction is required, answer the following: Calculate ultimate BOD of wastewater and stream water mix water?
Critical dissolved oxygen (D.O.) deficit occurs in which one of the following zones of pollution of ‘oxygen sag curve’ in case of self-purification of natural streams?
Disposal of sewage in large cities, is done in:
If a sewer carrying a discharge of 3 cumec outfalls into a river having a discharge of 10 cumec and DO equal to 9.1 mg/L the resultant DO of the mix is
Allowable disposable rate of application of sludge on land is determined by:-
In sewers designed with self cleansing velocity.
Name the pipe which is provided in septic tank for discharge of foul gases.
Consider the following statements regarding pyrolysis:1. It is an irreversible chemical change brought about by the action of heat in oxygen-free atmosphere.2. Range of temperature is 500°C to 1000°C.3. Internal heating causes organic matter to decompose physically and chemically rather than burn.4. It is a highly exothermic process.Which of the above statements are correct?
A treated wastewater (initial contaminant concentration, flow rate = 5C, 0.2Q) enters a stream (initial concentration, flow rate = 0.01C, Q). Calculate contaminant concentration in stream immediately after mixing of wastewater with stream water?
A combined sewer is the one which carries domestic sewage and

Discussion

No Comment Found

Related MCQs

Reply to Comment