When iron is rusted, it is (A) Converted to a fine powder (B) Reduced (C) Oxidised (D) None of these

When iron is rusted, it is
(A) Converted to a fine powder
(B) Reduced
(C) Oxidised
(D) None of these
by

1 Answer

Answer :

(C) Oxidised
by

Related questions

Rusted wrought iron outdoor furniture?

Description : Rusted wrought iron outdoor furniture?

Last Answer : Due to the nature of damage to the furniture being variable, there's no one kit that would be universally applicable. Instead, you'll want to start with an iron brush to remove rust. And move on from there to determine what the next step will be.

The weight of a rusted iron object compared to that of an unrusted one is (a) Appreciably more than (b) The same as (c) Less than (d) More or less the same as

Description : The weight of a rusted iron object compared to that of an unrusted one is (a) Appreciably more than (b) The same as (c) Less than (d) More or less the same as

Last Answer : Ans:(a)

To protect the iron from getting rusted, the coat of zinc is applied on it. This process is known as–

Description : To protect the iron from getting rusted, the coat of zinc is applied on it. This process is known as–

Last Answer : Galvanization

To protect the iron from getting rusted, the coat of zinc is applied on it. This process is known as

Description : To protect the iron from getting rusted, the coat of zinc is applied on it. This process is known as

Last Answer : Galvanization

(i) Substances oxidised is Na as it gains oxygen and oxygen is reduced. (ii) Substances reduced is Cu as hydrogen is oxidised as it gains oxygen. -Chemistry-10

Description : (i) Substances oxidised is Na as it gains oxygen and oxygen is reduced. (ii) Substances reduced is Cu as hydrogen is oxidised as it gains oxygen. -Chemistry-10

Last Answer : During this reaction, the sodium is gaining oxygen and is being oxidized. Oxygen is getting reduced. During this reaction, copper oxide is losing oxygen and is being reduced. The hydrogen is gaining oxygen and is being oxidized.

Identify the substances that are oxidised and the substances which are reduced in the following reactions. (i) 4Na(s) + O2(g) → 2Na2O(s) (ii) CuO (s) + H2(g) → Cu (s) + H2O(l) -Chemistry-10

Description : Identify the substances that are oxidised and the substances which are reduced in the following reactions. (i) 4Na(s) + O2(g) → 2Na2O(s) (ii) CuO (s) + H2(g) → Cu (s) + H2O(l) -Chemistry-10

Last Answer : (i) Substances oxidised is Na as it gains oxygen and oxygen is reduced. (ii) Substances reduced is Cu as hydrogen is oxidised as it gains oxygen.

Assertion :- `H_(2)S+Cl_(2)rarr2HCl+S` In the above reaction, Cl has been oxidised to `Cl^(-)` while `S^(-2)` has been reduced to S Reason :- In a rea

Description : Assertion :- `H_(2)S+Cl_(2)rarr2HCl+S` In the above reaction, Cl has been oxidised to `Cl^(-)` while `S^(-2)` has been reduced to S Reason :- In a rea

Last Answer : Assertion :- `H_(2)S+Cl_(2)rarr2HCl+S` In the above reaction, Cl has been oxidised to `Cl^(-)` ... is False. D. If both Assertion & Reason are False.

Silver halides are used in photographic plates because they are (a) Oxidised in air (b) Colourless (c) Easily soluble in a hypo solution (d) Readily reduced by light

Description : Silver halides are used in photographic plates because they are (a) Oxidised in air (b) Colourless (c) Easily soluble in a hypo solution (d) Readily reduced by light

Last Answer : Ans:(d)

Silver halides are used in photographic plates because they are - (1) oxidised in air (2) soluble in hyposolution (3) reduced by light (4) totally colourless

Description : Silver halides are used in photographic plates because they are - (1) oxidised in air (2) soluble in hyposolution (3) reduced by light (4) totally colourless

Last Answer : (3) reduced by light Explanation: The light-sensitive chemicals used in photographic film and paper are silver halides. Silver halides are used in photographic film and photographic paper, including ... - meaning that it can undergo development which turns the entire crystal into metallic silver.

What happens when a substance loses oxygen during reaction? It is said to be (a) Oxidised (b) Reduced (c) Both (d) None of the above

Description : What happens when a substance loses oxygen during reaction? It is said to be (a) Oxidised (b) Reduced (c) Both (d) None of the above

Last Answer : (b) Reduced

What happens when a substance gains oxygen during reaction? The substance gets – (a) Oxidised (b) Reduced (c) Both oxidized and reduced (d) None of the above

Description : What happens when a substance gains oxygen during reaction? The substance gets – (a) Oxidised (b) Reduced (c) Both oxidized and reduced (d) None of the above

Last Answer : (a) Oxidised

Silver halides are used in photographic plates because they are (1) oxidised in air (2) soluble in hyposolution (3) reduced by light (4) totally colourless

Description : Silver halides are used in photographic plates because they are (1) oxidised in air (2) soluble in hyposolution (3) reduced by light (4) totally colourless

Last Answer :  reduced by light

As the impurities are oxidised, the melting point of iron (A) Decreases (B) Remains unchanged (C) Increases (D) May increase or decrease; unpredictable

Description : As the impurities are oxidised, the melting point of iron (A) Decreases (B) Remains unchanged (C) Increases (D) May increase or decrease; unpredictable

Last Answer : (C) Increases

Iron is not used alone as a catalyst in ammonia synthesis, because (A) Its activity declines rapidly, if heated to above 520°C (B) It decomposes ammonia (C) It gets oxidised above 500°C (D) None of these

Description : Iron is not used alone as a catalyst in ammonia synthesis, because (A) Its activity declines rapidly, if heated to above 520°C (B) It decomposes ammonia (C) It gets oxidised above 500°C (D) None of these

Last Answer : (A) Its activity declines rapidly, if heated to above 520°C

Mixing of light fine powder such as insecticides is done by (A) Banbury mixer (B) Pug mill (C) Impact wheels (D) Kneader

Description : Mixing of light fine powder such as insecticides is done by (A) Banbury mixer (B) Pug mill (C) Impact wheels (D) Kneader

Last Answer : (C) Impact wheels

To get a fine talc powder from its granules, the equipment used is (A) Roller crusher (B) Ball mill (C) Jaw crusher (D) Gyratory crusher

Description : To get a fine talc powder from its granules, the equipment used is (A) Roller crusher (B) Ball mill (C) Jaw crusher (D) Gyratory crusher

Last Answer : (B) Ball mill

Bad odour in sanitary latrines is reduced by periodically sprinkling (A) Bleaching powder (B) Lime powder (C) Aluminium sulphate (D) None of these

Description : Bad odour in sanitary latrines is reduced by periodically sprinkling (A) Bleaching powder (B) Lime powder (C) Aluminium sulphate (D) None of these

Last Answer : Option B

One mole on iron [55.8 gm], when oxidised to `+2` oxidation state gives up :

Description : One mole on iron [55.8 gm], when oxidised to `+2` oxidation state gives up :

Last Answer : One mole on iron [55.8 gm], when oxidised to `+2` oxidation state gives up : A. `1N_(A)` electron B ... C. `3N_(A)` electron D. `0.5` mole of electron

How many compound(s) or iron (s) can be oxidised by `H_(2)O_(2)` among the following (i) `AsO_(3)^(2)` (ii) `SO_(4)^(2-)` (iii) `Fe_(2) (SO_(4))_(3)`

Description : How many compound(s) or iron (s) can be oxidised by `H_(2)O_(2)` among the following (i) `AsO_(3)^(2)` (ii) `SO_(4)^(2-)` (iii) `Fe_(2) (SO_(4))_(3)`

Last Answer : How many compound(s) or iron (s) can be oxidised by `H_(2)O_(2)` among the following (i) `AsO_(3)^(2)` (ii) ... ` (v) `H_(2)S` (vi) PbS (vii) `O_(3)`

How many compound(s) or iron (s) can be oxidised by `H_(2)O_(2)` among the following (i) `AsO_(3)^(2)` (ii) `SO_(4)^(2-)` (iii) `Fe_(2) (SO_(4))_(3)`

Description : How many compound(s) or iron (s) can be oxidised by `H_(2)O_(2)` among the following (i) `AsO_(3)^(2)` (ii) `SO_(4)^(2-)` (iii) `Fe_(2) (SO_(4))_(3)`

Last Answer : How many compound(s) or iron (s) can be oxidised by `H_(2)O_(2)` among the following (i) `AsO_(3)^(2)` (ii) ... ` (v) `H_(2)S` (vi) PbS (vii) `O_(3)`

Pick up the correct statement from the following: (A) In basic Bessemer process, the steel heats the converter (B) In open-hearth process, the furnace heats the steel (C) In Siemens process, the impurities of pig iron are oxidised by the oxygen of the ore (D) All the above

Description : Pick up the correct statement from the following: (A) In basic Bessemer process, the steel heats the converter (B) In open-hearth process, the furnace heats the steel (C) In Siemens process, the impurities of pig iron are oxidised by the oxygen of the ore (D) All the above

Last Answer : Answer: Option D

Found a rusted, circular floor grate from the 1800's. What should I do with it?

Description : Found a rusted, circular floor grate from the 1800's. What should I do with it?

Last Answer : Turn it into a wall hanging.

A box contains 50 bolts and 150 nuts. On checking the box, it was found that half of the bolts and half of the nuts are rusted. -Maths 9th

Description : A box contains 50 bolts and 150 nuts. On checking the box, it was found that half of the bolts and half of the nuts are rusted. -Maths 9th

Last Answer : Total number of nuts and bolts in the box = 150 + 50 = 200 Number of nuts and bolts rusted = 1 / 2 × 200 = 100 P(a rusted nut or bolt) = 100 / 200 = 1 / 2

A box contains 50 bolts and 150 nuts. On checking the box, it was found that half of the bolts and half of the nuts are rusted. -Maths 9th

Description : A box contains 50 bolts and 150 nuts. On checking the box, it was found that half of the bolts and half of the nuts are rusted. -Maths 9th

Last Answer : Total number of nuts and bolts in the box = 150 + 50 = 200 Number of nuts and bolts rusted = 1 / 2 × 200 = 100 P(a rusted nut or bolt) = 100 / 200 = 1 / 2

What to lubricate rusted pliers with?

Description : How to lubricate splitter pliers that are rusty and do not want to work?

Last Answer : They need to be cut off first. For relaxation and agitation, the WD 40, perhaps an even better MD40, could help, but it's time to let it go. Sometimes to loosen rust, soaking in kerosene or diesel ... WD 40 will be good and functional. Of course, another oil can also be used. But never kitchen.

Why does not stainless steel get rusted easily ?

Description : Why does not stainless steel get rusted easily ?

Last Answer : Why does not stainless steel get rusted easily ? A. Chromium and nickel combine with iron B. ... a hard chemical compound with chromium present in it.

I am a single parent and my roof needs to be replaced I have a metal roof and it has leaked in 2 spots and is all rusted. Is there any assistance for me Thank you Candi Clinard ?

Description : I am a single parent and my roof needs to be replaced I have a metal roof and it has leaked in 2 spots and is all rusted. Is there any assistance for me Thank you Candi Clinard ?

Last Answer : sweetie there sure is, those old tin roofs are not the best for living I would remove the old roof and replace it with a more modern one about $800 or do

can the floor under the drivers seat be repaired. It is all rusted out.?

Description : can the floor under the drivers seat be repaired. It is all rusted out.?

Last Answer : Any metal area can either be repaired or replaced, just depending on the car how easy or not that will be. If repair or replacement panels are not available they can be made. Floyd West Klassic Rides LLC 704- ... It also depends on how new the car is and if they can find an old one at the junkyard.

is a common troubles in the operation of Mower. a) Knives get twisted. b) Knives get melted. c) Knives gets rusted. d) Knives gets break

Description : is a common troubles in the operation of Mower. a) Knives get twisted. b) Knives get melted. c) Knives gets rusted. d) Knives gets break

Last Answer : Knives gets break

How to Repair Rusted Truck Frames

Description : How to Repair Rusted Truck Frames

Last Answer : How to Repair Rusted Truck Frames If you love your truck and more importantly love to work on trucks, one project that many tackle is to restore older trucks, jeeps, SUV's, etc to their old glory. ... the patch was welded. Now that the primer has dried, finish the frame with paint and you are done.

(1) Calcium silicate and calcium alurninate Explanation: Portland cement is the most common type of cement in general use around the world because it is a basic ingredient of concrete, mortar, stucco and most non-specialty grout. It usually originates from limestone. It is a fine powder produced by grinding Portland cement. clinker (more than 90%), a limited amount of calcium sulfate (which controls the set time) and up to 5% minor constituents.

Description : (1) Calcium silicate and calcium alurninate Explanation: Portland cement is the most common type of cement in general use around the world because it is a basic ingredient of concrete, mortar, stucco ... limited amount of calcium sulfate (which controls the set time) and up to 5% minor constituents.

Last Answer : Milk is a colloidal system in which: (1) Water is dispersed in fat (2) Fat is dispersed in water (3) Fat and water are dispersed in each other (4) Fat is dissolved

Carbonisation of coal consists of  A. drying and crushing the coal to a fine powder  B. moulding the finely ground coal under pressure with or without a binding material  C. heating the wood with a limited supply of air to temperature not less than 280°C  D. none of the above

Description : Carbonisation of coal consists of  A. drying and crushing the coal to a fine powder  B. moulding the finely ground coal under pressure with or without a binding material  C. heating the wood with a limited supply of air to temperature not less than 280°C  D. none of the above

Last Answer : Answer: D

Cement clinker is reduced to fine size by a (A) Roll crusher (B) Ball mill (C) Tube mill (D) Hammer mill

Description : Cement clinker is reduced to fine size by a (A) Roll crusher (B) Ball mill (C) Tube mill (D) Hammer mill

Last Answer : (C) Tube mill

In flame atomizer the sample is converted into fine spray by

Description : In flame atomizer the sample is converted into fine spray by (A) burner (B) fuel (C) nebulizer (D) none of these

Last Answer : In flame atomizer the sample is converted into fine spray by nebulizer.

Statement -1 : Ores are generally converted into oxides , prior to reduction . Statement- 2 : Metal oxides can be easily reduced .

Description : Statement -1 : Ores are generally converted into oxides , prior to reduction . Statement- 2 : Metal oxides can be easily reduced .

Last Answer : Statement -1 : Ores are generally converted into oxides , prior to reduction . Statement- 2 : Metal oxides ... -1 : is false , statement-2 : is true

Mark the correct option a) The WLA policy can be converted into EA after one year b) The EA policy can be altered and value can be reduced after one year of issue and before one year of maturity c) CWL policy cant be converted into EA policy at the end of the 5 year. d) All the above

Description : Mark the correct option a) The WLA policy can be converted into EA after one year b) The EA policy can be altered and value can be reduced after one year of issue and before one year of maturity c) CWL policy cant be converted into EA policy at the end of the 5 year. d) All the above

Last Answer : d) All the above

DME and VOR are “frequency paired” because: a. The same receiver can be used for both aids b. The VOR transmitter is easily converted to the required DME frequency c. Cockpit workload is reduced d. Both ground transmitter aerials can be placed on the same site if required

Description : DME and VOR are “frequency paired” because: a. The same receiver can be used for both aids b. The VOR transmitter is easily converted to the required DME frequency c. Cockpit workload is reduced d. Both ground transmitter aerials can be placed on the same site if required

Last Answer : c. Cockpit workload is reduced

In case of imprisonment for non-payment of fine, if a part of the fine is paid, such sentence (a) Shall be reduced proportionately (b) Shall not be reduced in direct proportion to the fine paid (c) Shall be reduced but subject to the discretion of the court as to the quantum of reduction (d) All of the above.

Description : In case of imprisonment for non-payment of fine, if a part of the fine is paid, such  sentence (a) Shall be reduced proportionately (b) Shall not be reduced in direct proportion to the fine paid ( ... subject to the discretion of the court as to the quantum of  reduction (d) All of the above.

Last Answer : (a) Shall be reduced proportionately

Pick out the wrong statement. (A) Benzopyrene which causes cancer is present in traces in tobacco, charcoal & petrol driven automobile exhaust (B) NO2 is capable of penetrating the troposphere and can absorb both ultraviolet & visible light (C) Hydrocarbon pollutants are produced by sweet gum, oak & natural rubber trees (D) H2S is not at all produced during combustion of sulphur bearing fuels as all the sulphur is oxidised to SO2

Description : Pick out the wrong statement. (A) Benzopyrene which causes cancer is present in traces in tobacco, charcoal & petrol driven automobile exhaust (B) NO2 is capable of penetrating the troposphere and ... at all produced during combustion of sulphur bearing fuels as all the sulphur is oxidised to SO2

Last Answer : (D) H2S is not at all produced during combustion of sulphur bearing fuels as all the sulphur is oxidised to SO2

The pH value of oxidised sewage is about (A) 1.8 (B) 6.2 (C) 7.3 (D) 13.4

Description : The pH value of oxidised sewage is about (A) 1.8 (B) 6.2 (C) 7.3 (D) 13.4

Last Answer : (C) 7.3

Bio-degradable detergents (A) Can be readily oxidised (B) Pose problem in sewerage plant (C) Have an isoparaffinic structure (D) Should not be used as it spoils the cloth

Description : Bio-degradable detergents (A) Can be readily oxidised (B) Pose problem in sewerage plant (C) Have an isoparaffinic structure (D) Should not be used as it spoils the cloth

Last Answer : (A) Can be readily oxidised

Steels with high carbon equivalent have poor Weldability, because in these steels during welding (A) Carbon and other alloying elements get oxidised from the weld pool (B) Excessive ferrite forms in the heat affected zone leading to poor toughness of the weld (C) Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld (D) Segregation of carbon and other element occurs in the weld pool leading to poor properties of the weld

Description : Steels with high carbon equivalent have poor Weldability, because in these steels during welding (A) Carbon and other alloying elements get oxidised from the weld pool (B) Excessive ferrite forms in the ... of carbon and other element occurs in the weld pool leading to poor properties of the weld

Last Answer : (C) Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld

Spray dryer for evaporating milk to produce milk powder is made of (A) Lead lined steel (B) Stainless steel (C) Aluminium (D) Cast iron

Description : Spray dryer for evaporating milk to produce milk powder is made of (A) Lead lined steel (B) Stainless steel (C) Aluminium (D) Cast iron

Last Answer : (B) Stainless steel

H2S present in gaseous stream can be removed by adsorption on (A) Silica gel (B) Active carbon (C) Bog iron (D) Limestone powder

Description : H2S present in gaseous stream can be removed by adsorption on (A) Silica gel (B) Active carbon (C) Bog iron (D) Limestone powder

Last Answer : (C) Bog iron

Which of the following is an adsorbent used for the removal of SO2 from gas/air? (A) Bog iron (B) Limestone powder or alkalised alumina (C) Silica gel (D) Active carbon

Description : Which of the following is an adsorbent used for the removal of SO2 from gas/air? (A) Bog iron (B) Limestone powder or alkalised alumina (C) Silica gel (D) Active carbon

Last Answer : (B) Limestone powder or alkalised alumina

What are the different ways in which glucose is oxidised to provide energy in various organisms ? -Biology

Description : What are the different ways in which glucose is oxidised to provide energy in various organisms ? -Biology

Last Answer : First step of breakdown of glucose (6 carbon molecules) takes place in the cytoplasm of cells of all organisms. This process yields a three carbon molecule compound called pyruvate. Further break ... into lactic acid (3 carbon molecule compound). Formation of lactic acid in muscles causes cramp.

In anaerobic respiration, what is the net gain of ATP per glucose molecule oxidised? -Do You Know?

Description : In anaerobic respiration, what is the net gain of ATP per glucose molecule oxidised? -Do You Know?

Last Answer : answer:

What is the a biological process in which glucose and fat is oxidised to librate energy? -Do You Know?

Description : What is the a biological process in which glucose and fat is oxidised to librate energy? -Do You Know?

Last Answer : answer:

In which biological process sugar is oxidised to release energy? -Do You Know?

Description : In which biological process sugar is oxidised to release energy? -Do You Know?

Last Answer : answer:

Which of the following will not be oxidised by `O_(3)`?

Description : Which of the following will not be oxidised by `O_(3)`?

Last Answer : Which of the following will not be oxidised by `O_(3)`? A. KI B. `KMnO_(4)` C. `K_(2)MnO_(4)` D. `FeSO_(4)`