Pollution by particulate matter emission in the atmosphere does not take place during metal (A) Grinding (B) Machining(C) Cutting(D) Polishing

Pollution by particulate matter emission in the atmosphere does not
take place during metal
(A) Grinding
(B) Machining
(C) Cutting
(D) Polishing
by

1 Answer

Answer :

(D) Polishing
by

Related questions

An efficient device to eliminate particulate matter from industrial emission is

Description : An efficient device to eliminate particulate matter from industrial emission is

Last Answer : An efficient device to eliminate particulate matter from industrial emission is A. ... separators C. Incineration D. Eletrcostatic precipitators

The Particulate Matter (PM-10) exhaled from the polluted atmosphere is often filtered out during the process of (1) Coughing (2) Sneezing (3) A and B (4) Urination

Description : The Particulate Matter (PM-10) exhaled from the polluted atmosphere is often filtered out during the process of (1) Coughing (2) Sneezing (3) A and B (4) Urination

Last Answer : (2) Sneezing Explanation: PM-10 is a particulate matter having an aerodynamic diameter of less than 10 gym. Particles larger than 10 microns tend to be filtered out in the nose and therefore do not enter the respiratory tract. 926.

The Particulate Matter (PM-10) exhaled from the polluted atmosphere is often filtered out during the process of (1) Coughing (2) Sneezing (3) A and B (4) Urination

Description : The Particulate Matter (PM-10) exhaled from the polluted atmosphere is often filtered out during the process of (1) Coughing (2) Sneezing (3) A and B (4) Urination

Last Answer : Sneezing

Pick out the wrong statement. (A) Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value (B) Environmental pollution by NOx emission is much higher by four stroke petrol engines as compared to the two stroke engines (C) Temperature in stratosphere rises with increasing altitude (D) The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere

Description : Pick out the wrong statement. (A) Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value (B) Environmental pollution by ... in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere

Last Answer : (D) The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere

Compressed dry air is used as the cutting fluid, while machining (A) Steel (B) Cast iron (C) Aluminium (D) None of these

Description : Compressed dry air is used as the cutting fluid, while machining (A) Steel (B) Cast iron (C) Aluminium (D) None of these

Last Answer : Option B

According to Central Pollution Control board (CPCB). Which particulate size in diameter (in micrometers) of the air pollutants is responsible for grea

Description : According to Central Pollution Control board (CPCB). Which particulate size in diameter (in micrometers) of the air pollutants is responsible for grea

Last Answer : According to Central Pollution Control board (CPCB). Which particulate size in diameter (in micrometers) of the air ... . 2.5 or less D. 1.5 or less

According to Central Pollution Control Board (CPCB), which particulate size in diameter (in micrometers) of the air pollutants is responsible for greatest harm to human health? (a) 1.0 or less (b) 5.2 - 2.5 (c) 2.5 or less (d) 1.5 or less

Description : According to Central Pollution Control Board  (CPCB), which particulate size in diameter (in  micrometers) of the air pollutants is responsible for  greatest harm to human health? (a) 1.0 or less (b) 5.2 - 2.5 (c) 2.5 or less (d) 1.5 or less

Last Answer : (c) 2.5 or less

According to Central Pollution Control Board (CPCB), which particulate size in diameter (in micrometers) of the air pollutants is responsible for greatest harm to human health? (a) 1.0 or less (b) 5.2 - 2.5 (c) 2.5 or less (d) 1.5 or less

Description : According to Central Pollution Control Board (CPCB), which particulate size in diameter (in micrometers) of the air pollutants is responsible for greatest harm to human health? (a) 1.0 or less (b) 5.2 - 2.5 (c) 2.5 or less (d) 1.5 or less

Last Answer : (c) 2.5 or less

The most serious environmental pollution from a nuclear reactor is: w) radioactivity x) particulate formation y) thermal pollution z) noise pollution

Description : The most serious environmental pollution from a nuclear reactor is: w) radioactivity x) particulate formation y) thermal pollution z) noise pollution 

Last Answer : ANSWER: Y -- THERMAL POLLUTION 

As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m3 .(μg-microgram) (A) 10 (B) 90 (C) 800 (D) 750

Description : As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m3 .(μg-microgram) (A) 10 (B) 90 (C) 800 (D) 750

Last Answer : (B) 90

The luster of a metal is due to - (1) high polishing (2) high density (3) chemical inertness (4) presence of free electrons

Description : The luster of a metal is due to - (1) high polishing (2) high density (3) chemical inertness (4) presence of free electrons

Last Answer : (4) presence of free electrons Explanation: Lustre or luster is the way light interacts with the surface of a crystal, rock, or mineral. The word traces its origins back to the Latin lux, meaning "light", and generally implies radiance, gloss, or brilliance.

A fluid energy mill is used for (A) Cutting (B) Grinding (C) Ultra-grinding (D) Crushing

Description : A fluid energy mill is used for (A) Cutting (B) Grinding (C) Ultra-grinding (D) Crushing

Last Answer : (C) Ultra-grinding

A fluid energy mill is used for (A) Cutting (B) Grinding (C) Ultra grinding (D) Crushing

Description : A fluid energy mill is used for (A) Cutting (B) Grinding (C) Ultra grinding (D) Crushing

Last Answer : (C) Ultra grinding

How effective are air scrubbers in removing particulate matter from the air?

Description : How effective are air scrubbers in removing particulate matter from the air?

Last Answer : answer:Particulate matter from exhaust gases emitted by power plant boilers in particular (if you'll pardon the pun) is primarily removed via the use of electrostatic precipitators or by baghouses. A ... its entire traverse as the gas loses heat and speed and encounters obstacles in the flow.

Assertion: Suspended particulate matter(SPM) is an important pollutant released by diesel vehicles. Reason : Catalytic convertes greatly reduce pollut

Description : Assertion: Suspended particulate matter(SPM) is an important pollutant released by diesel vehicles. Reason : Catalytic convertes greatly reduce pollut

Last Answer : Assertion: Suspended particulate matter(SPM) is an important pollutant released by diesel vehicles. Reason : ... but reason is wrong D. Both are wrong

Which is not a control measure to reduce particulate matter in environment?

Description : Which is not a control measure to reduce particulate matter in environment?

Last Answer : Which is not a control measure to reduce particulate matter in environment? A. Cyclonic ... C. Effluent treatment D. Electrostatic precipitator

The following statement(s) is/are true concerning host defense mechanisms to intraabdominal infection. a. Bacterial clearance can occur via translymphatic absorption b. Phagocytic activity and bacterial killing can occur via resident phagocytic cells and an influx of PMNs c. A fibrinogen-rich inflammatory exudate is released into the peritoneal cavity, trapping large numbers of bacteria and other particulate matter d. Perforations of a bowel may be walled off but are seldom sealed by the omentum and other mobile viscera

Description : The following statement(s) is/are true concerning host defense mechanisms to intraabdominal infection. a. Bacterial clearance can occur via translymphatic absorption b. Phagocytic activity and bacterial killing can ... may be walled off but are seldom sealed by the omentum and other mobile viscera

Last Answer : Answer: a, b, c The introduction of microorganisms into the normally sterile peritoneal environment invoke several potent specialized host antimicrobial defense mechanisms. Bacterial clearance, ... the contaminated enteric contents walled off, preventing continued soilage of the peritoneal cavity

Which one of the following is not correct with regard to the harmful effects of particulate matter of the size 2.5  micrometer or less? (a) It can cause respiratory problems. (b) It can directly enter into our circulatory system. (c) It can cause inflammation and damage to the lungs. (d) It can be inhaled into the lungs.

Description : Which one of the following is not correct with regard to the harmful effects of particulate matter of the size 2.5  micrometer or less? (a) It can cause respiratory problems. (b) It can directly enter ... ) It can cause inflammation and damage to the lungs. (d) It can be inhaled into the lungs.

Last Answer : (b) It can directly enter into our circulatory system.

A scrubber in the exhaust of a chemical industrial plant removes (a) gases like sulphur dioxide (b) particulate matter of the size 5 micrometer or above (c) gases like ozone and methane (d) particulate matter of the size 2.5 micrometer or less.

Description : A scrubber in the exhaust of a chemical industrial plant removes (a) gases like sulphur dioxide (b) particulate matter of the size 5 micrometer or above (c) gases like ozone and methane (d) particulate matter of the size 2.5 micrometer or less.

Last Answer : a) gases like sulphur dioxide

The optical property of a water body depends on: (A) Absorption by the dissolved material (B) Absorption by the suspended particulate matter (C) Scattering by the suspended particulate matter (D) All of these

Description : The optical property of a water body depends on: (A) Absorption by the dissolved material (B) Absorption by the suspended particulate matter (C) Scattering by the suspended particulate matter (D) All of these

Last Answer : Answer: Option D

Identify the air pollutant in urban areas which irritates eyes and also respiratory tract of human beings. (A) Particulate matter (B) Oxides of nitrogen (C) Surface ozone (D) Carbon monoxide

Description : Identify the air pollutant in urban areas which irritates eyes and also respiratory tract of human beings. (A) Particulate matter (B) Oxides of nitrogen (C) Surface ozone (D) Carbon monoxide

Last Answer : (C) Surface ozone

In the recently launched Air Quality Index in India, which of the following pollutants is not included? (A) Chlorofluorocarbons (B) Carbon monoxide (C) Fine particulate matter (D) Ozone

Description : In the recently launched Air Quality Index in India, which of the following pollutants is not included? (A) Chlorofluorocarbons (B) Carbon monoxide (C) Fine particulate matter (D) Ozone

Last Answer : (A) Chlorofluorocarbons

In cell formation using production flow analysis, the following process will be left out of theanalysis a.Grinding b.Milling c.Drilling d.Gear cutting

Description : In cell formation using production flow analysis, the following process will be left out of theanalysis a.Grinding b.Milling c.Drilling d.Gear cutting

Last Answer : d.Gear cutting

I’m white, perfect for cutting and grinding. For most animals, I am a useful tool. What am I? -Riddles

Description : I’m white, perfect for cutting and grinding. For most animals, I am a useful tool. What am I? -Riddles

Last Answer : Teeth.

I'm white, and used for cutting and grinding. When I'm damaged, humans usually remove me or fill me. For most animals I am a useful tool.What am I? -Riddles

Description : I'm white, and used for cutting and grinding. When I'm damaged, humans usually remove me or fill me. For most animals I am a useful tool.What am I? -Riddles

Last Answer : A tooth!

What of these is responsible for cutting tearing and grinding food?

Description : What of these is responsible for cutting tearing and grinding food?

Last Answer : its ur TEETH

Should I use a diamond grinding wheel for cutting ceramic tile?

Description : Should I use a diamond grinding wheel for cutting ceramic tile?

Last Answer : Use a wheel specifically rated for grinding concrete or ceramic tile. It doesn't have to be a diamond wheel; titanium-coated, tungsten-coated or carbide coated wheels will also work.

I'm white; perfect for cutting & grinding. For most animals I am a useful tool. What am I?

Description : I'm white; perfect for cutting & grinding. For most animals I am a useful tool. What am I?

Last Answer : Teeth

The compound of silicon used in cutting & grinding tools is silicon

Description : The compound of silicon used in cutting & grinding tools is silicon

Last Answer : carbide/carborundum.

Which of the following is not a source of ozone emission in the atmosphere? (A) Refrigerators (B) Xerox machines (C) Dermatological photo-therapy equipments (D) High voltage electrical equipments

Description : Which of the following is not a source of ozone emission in the atmosphere? (A) Refrigerators (B) Xerox machines (C) Dermatological photo-therapy equipments (D) High voltage electrical equipments

Last Answer : (A) Refrigerators

Powder metallurgy process does not make metal powder by (A) Atomisation (B) Grinding/milling (C) Hammering (D) Electrolytic deposition

Description : Powder metallurgy process does not make metal powder by (A) Atomisation (B) Grinding/milling (C) Hammering (D) Electrolytic deposition

Last Answer : Option C

Polishing silver without silver polish?

Description : Polishing silver without silver polish?

Last Answer : answer:it’s here I’ve tried it and it does work!

Why diatoms are used in filtration and polishing?

Description : Why diatoms are used in filtration and polishing?

Last Answer : Why diatoms are used in filtration and polishing?

The vitamin present in rice polishing is?

Description : The vitamin present in rice polishing is?

Last Answer : Vitamin B2 RADIO ACTIVITY

Explain electro polishing.

Description : Explain electro polishing.

Last Answer : The article to be electro polished is taken as anode in the electrolytic bath with copper or lead cathode and a suitable electrolyte. When direct current is passed through the electrolyte, the ... the anode is electro polished. Ex: Sandwiched cookers are manufactured by the electro polishing method.

What is electro polishing?

Description : What is electro polishing?

Last Answer : Electro polishing is an electrochemical process that removes material from a metallic article. It is the reverse of electroplating.

Deep ponds, in which oxygen is absent except, perhaps, across a relatively thin surface layer, are called : (a) Aerobic ponds (b) Anaerobic ponds (c) Facultative ponds (d) Polishing ponds

Description : Deep ponds, in which oxygen is absent except, perhaps, across a relatively thin surface layer, are called : (a) Aerobic ponds (b) Anaerobic ponds (c) Facultative ponds (d) Polishing ponds

Last Answer : (b) Anaerobic ponds

The MAIN purpose of burnishing is: A. To help eliminating excess mercury (condensing) B. To condense margins C. Polishing of filling

Description : The MAIN purpose of burnishing is: A. To help eliminating excess mercury (condensing) B. To condense margins C. Polishing of filling

Last Answer : B. To condense margins

Give the uses of granite & marble polishing waste.

Description : Give the uses of granite & marble polishing waste. 

Last Answer : Uses of granite & marble polishing waste : 1. Used as fine aggregate in mortar & concrete. 2. Used in manufacturing of bricks. 3. Used inmanufacturing of artificial stone. 4. Used inmanufacturing of paving blocks. 

Give any two uses of granite and marble polishing waste.

Description : Give any two uses of granite and marble polishing waste.

Last Answer : Use of granite and marble polishing waste. 1. It is used in manufacturing of brick and tiles 2. It is used for filling joints in flooring. 3. It is used in self-compacting concrete.

9. Montreal protocol aims at a) biodiversity conservation b) reduction of ozone depleting substances c) control of water pollution d) control of carbondioxide emission

Description : 9. Montreal protocol aims at a) biodiversity conservation b) reduction of ozone depleting substances c) control of water pollution d) control of carbondioxide emission

Last Answer : a) biodiversity conservation

List eight ways of reducing pollution. Explain PCV and evaporative emission system with suitable sketch.

Description : List eight ways of reducing pollution. Explain PCV and evaporative emission system with suitable sketch.

Last Answer : Eight ways of reducing pollution:-  1) Optimize Ignition Advance 2) Use unleaded gasoline & Low sulphur diesel 3) Use leaner air fuel ratio 4) Use exhaust gas treatment devices ex Catalytic ... check valve. The EVAP system is designed to limit maximum vacuum and pressure in the fuel tank.

The machine tool, in which calculation and setting of the operating conditions like depth ofcut, feed, speed are done during the machining by the control system itself, is called a.Computer Numerical Control System b.Direct Numerical Control System c.Machining Center System d.Adaptive Control System

Description : The machine tool, in which calculation and setting of the operating conditions like depth ofcut, feed, speed are done during the machining by the control system itself, is called a.Computer Numerical Control System b.Direct Numerical Control System c.Machining Center System d.Adaptive Control System

Last Answer : d.Adaptive Control System

Enlist different types of chips formed during machining

Description : Enlist different types of chips formed during machining

Last Answer : Different types of chips: 1. Discontinuous or segmental chips 2. Continuous chips 3. Continuous chips with built-up edge (BUE) 4. Non homogeneous chip

Particulate' air pollutants are finely divided solids and liquids. Which of the following is not a ‘particulate’? (A) Dust & mists(B) Smoke & fumes(C) Photochemical smog & soot(D) None of these

Description : Particulate' air pollutants are finely divided solids and liquids. Which of the following is not a ‘particulate’? (A) Dust & mists (B) Smoke & fumes (C) Photochemical smog & soot (D) None of these

Last Answer : (D) None of these

Which is a source of methane emission into the atmosphere? -Do You Know?

Description : Which is a source of methane emission into the atmosphere? -Do You Know?

Last Answer : answer:

Which is a source of methane emission into the atmosphere?

Description : Which is a source of methane emission into the atmosphere?

Last Answer : Wetland

The blueness of the sky is mainly due to -------? A. The scattering of sunlight by air molecules (Answer) B. The presence of water vapor C. Absorption of blue light by the air D. Emission of blue light by the atmosphere

Description : The blueness of the sky is mainly due to -------? A. The scattering of sunlight by air molecules (Answer) B. The presence of water vapor C. Absorption of blue light by the air D. Emission of blue light by the atmosphere

Last Answer : A. The scattering of sunlight by air molecules (Answer)

__________ property of steel increases by addition of large amount of silicon in it. (A) Mechanical (B) Machining (C) Magnetic (D) Refractory

Description : __________ property of steel increases by addition of large amount of silicon in it. (A) Mechanical (B) Machining (C) Magnetic (D) Refractory

Last Answer : Option C

Presence of nickel & chromium in steel does not raise its (A) Elastic limit (B) Machining properties (C) Ductility (D) Resilience Answer: Option A

Description : Presence of nickel & chromium in steel does not raise its (A) Elastic limit (B) Machining properties (C) Ductility (D) Resilience Answer: Option A

Last Answer : Option A