Two gases X and Y bring about bleaching of flowers. X bleaches due to oxidation of dye while Y bleaches by reducing the colouring matter. X and Y are

Two gases X and Y bring about bleaching of flowers. X bleaches due to oxidation of dye while Y bleaches by reducing the colouring matter. X and Y are
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Two gases X and Y bring about bleaching of flowers. X bleaches due to oxidation of dye while Y bleaches by ... C. `SO_2, O_2` D. (4) None of these
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Sulphur dioxide bleaches colouring matter by – (1) Reduction (2) Dehydration (3) Decomposition (4) Oxidation

Description : Sulphur dioxide bleaches colouring matter by – (1) Reduction (2) Dehydration (3) Decomposition (4) Oxidation

Last Answer : (1) Reduction Explanation: Sulphur dioxide gas exhibits bleaching properties in presence of moisture. It dissolves in water liberating nascent hydrogen. Nascent hydrogen removes oxygen atoms from the colouring matter (reduces colouring matter) and it loses its colour.

Sulphur dioxide bleaches colouring matter by : (1) Reduction (2) Dehydration (3) Decomposition (4) Oxidation

Description : Sulphur dioxide bleaches colouring matter by : (1) Reduction (2) Dehydration (3) Decomposition (4) Oxidation

Last Answer : Reduction

Activated Charcoal is used to remove colouring matter from pure substances by – (1) Bleaching (2) Oxidation (3) Adsorption (4) Reduction

Description : Activated Charcoal is used to remove colouring matter from pure substances by – (1) Bleaching (2) Oxidation (3) Adsorption (4) Reduction

Last Answer : (3) Adsorption Explanation: Heating wood to a very high temperature in the absence of air makes charcoal. When it is heated to an even higher temperature, about 930°C, impurities are driven from its ... . It does so by the process of adsorption, or by attracting these molecules to the surface.

Activated Charcoal is used to remove colouring matter from pure substances by (1) Bleaching (2) Oxidation (3) Adsorption (4) Reduction

Description : Activated Charcoal is used to remove colouring matter from pure substances by (1) Bleaching (2) Oxidation (3) Adsorption (4) Reduction

Last Answer : Adsorption

Sulphur dioxide bleaches colouring matter by?

Description : Sulphur dioxide bleaches colouring matter by?

Last Answer : Reduction.

One gas bleaches the colour of flowers by reduction and other by oxidation. These gases are

Description : One gas bleaches the colour of flowers by reduction and other by oxidation. These gases are

Last Answer : One gas bleaches the colour of flowers by reduction and other by oxidation. These gases are A. (A) `SO_2,CI_2` ... ) `H_2S, Br_2 ` D. (D) `NH_3, SO_3`

One gas bleaches the colour of flowers by reduction and other by oxidation. These gases are

Description : One gas bleaches the colour of flowers by reduction and other by oxidation. These gases are

Last Answer : One gas bleaches the colour of flowers by reduction and other by oxidation. These gases are A. CO and `CO_(2)` B. ... Cl_(2)` D. `NH_(3)` and `SO_(3)`

Bleaching action of bleaching powder is due to its __________ properties. (A) Reducing (B) Oxidising (C) Disinfecting (D) None of these

Description : Bleaching action of bleaching powder is due to its __________ properties. (A) Reducing (B) Oxidising (C) Disinfecting (D) None of these

Last Answer : (B) Oxidising

Activated charcoal is employed to remove colouring matter from pure substance, it work? -Do You Know?

Description : Activated charcoal is employed to remove colouring matter from pure substance, it work? -Do You Know?

Last Answer : answer:

Haemoglobin is 1. The colouring matter of leaves of plants 2. The colouring matter of blood 3. A compound that is highly coloured 4. A compound that contains iron The correct answers are: (a) 1, 2 and 4 (b) 2, 3 and 4 (c) 1, 2, 3 and 4 (d) 1, 2 and 3

Description : Haemoglobin is 1. The colouring matter of leaves of plants 2. The colouring matter of blood 3. A compound that is highly coloured 4. A compound that contains iron The correct answers are: (a) 1, 2 and 4 (b) 2, 3 and 4 (c) 1, 2, 3 and 4 (d) 1, 2 and 3

Last Answer : Ans:(b)

Activated charcoal is employed to remove colouring matter from pure substance, it work?

Description : Activated charcoal is employed to remove colouring matter from pure substance, it work?

Last Answer : Adsorption

To restore SOME color, can you dye your hair without stripping/bleaching it first?

Description : To restore SOME color, can you dye your hair without stripping/bleaching it first?

Last Answer : I don’t know your skill in doing it yourself, but some color could be streaked, no need to bleach.

Can I dye my hair with out bleaching it?

Description : Can I dye my hair with out bleaching it?

Last Answer : answer:If you want a bright colour and your natural colour is dark, the dye will likely just give you highlights or a shade that's only noticeable in the sun. My hair is naturally a very dark brown ... 're of a different ethnicity than your friend, her hair might be more apt to colour than yours is.

Is there a way I can dye my hair a brighter red without bleaching it before coloring it?

Description : Is there a way I can dye my hair a brighter red without bleaching it before coloring it?

Last Answer : What color is your hair, naturally?

How long before I can dye my hair after bleaching?

Description : How long before I can dye my hair after bleaching?

Last Answer : Always wait at least one day. If you dye your hair the same day you bleach it, your hair will break off at the weakest points. I would think the ideal situation at least, this is what I would do when I was still dyeing my hair would be to wait two or three days and then dye it.

Asserarion:Bleaching action action of `SO_(2)` is temporary and by reduction. Reason: The colour of material is regained due to oxidation by air.

Description : Asserarion:Bleaching action action of `SO_(2)` is temporary and by reduction. Reason: The colour of material is regained due to oxidation by air.

Last Answer : Asserarion:Bleaching action action of `SO_(2)` is temporary and by reduction. Reason: The colour of material is regained due to oxidation by air.

Asserarion:Bleaching action action of `SO_(2)` is temporary and by reduction. Reason: The colour of material is regained due to oxidation by air.

Description : Asserarion:Bleaching action action of `SO_(2)` is temporary and by reduction. Reason: The colour of material is regained due to oxidation by air.

Last Answer : Asserarion:Bleaching action action of `SO_(2)` is temporary and by reduction. Reason: The colour of ... -I is not correct and Statement-II is correct

Assertion : Dry `SO_(2)` does not bleach dry flowers Reason: The bleaching action of `SO_(2)` is due to its readucing nature

Description : Assertion : Dry `SO_(2)` does not bleach dry flowers Reason: The bleaching action of `SO_(2)` is due to its readucing nature

Last Answer : Assertion : Dry `SO_(2)` does not bleach dry flowers Reason: The bleaching action of `SO_(2 ... Statement-I is not correct and Statement-II is correct

The soil which bleaches quickly due to rain, is called

Description : The soil which bleaches quickly due to rain, is called

Last Answer : Laterite

The soil which bleaches quickly due to rain, is called- —

Description : The soil which bleaches quickly due to rain, is called- —

Last Answer : Laterite

How many of the following species can act as both bleaching agent and reducing agent `O_(3),H_(2)O_(2),SO_(2),HCl,SO_(3)`

Description : How many of the following species can act as both bleaching agent and reducing agent `O_(3),H_(2)O_(2),SO_(2),HCl,SO_(3)`

Last Answer : How many of the following species can act as both bleaching agent and reducing agent `O_(3),H_(2)O_(2),SO_(2),HCl,SO_(3)`

Carbon dioxide is – (1) a reducing agent (2) an oxidising agent (3) a dehydrating agent (4) a bleaching agent

Description : Carbon dioxide is – (1) a reducing agent (2) an oxidising agent (3) a dehydrating agent (4) a bleaching agent

Last Answer : (1) a reducing agent Explanation: A good reducing agent must be able to donate electrons readily. This means that it must not have very much attraction for electrons. Carbon dioxide is just like any other oxide and can be reduced to its respective elements by applied energy.

Bleaching action of moist sulphur dioxide is because of its – (1) basic property (2) acidic property (3) oxidising property (4) reducing property

Description : Bleaching action of moist sulphur dioxide is because of its – (1) basic property (2) acidic property (3) oxidising property (4) reducing property

Last Answer : (3) oxidising property Explanation: In moist conditions, sulphur dioxide is a bleaching agent. In the reducing action of SO2, oxygen is removed from coloured dye. Sulphur dioxide is used to bleach ... Calcium hydrogen sulphite Ca(HSO3)2 is used to whiten wood pulp in the manufacturing of paper.

Carbon dioxide is (1) a reducing agent (2) an oxidising agent (3) a dehydrating agent (4) a bleaching agent

Description : Carbon dioxide is (1) a reducing agent (2) an oxidising agent (3) a dehydrating agent (4) a bleaching agent

Last Answer :  a reducing agent

Bleaching action of moist sulphur di-oxide is because of its (1) basic property (2) acidic property (3) oxidising property (4) reducing property

Description : Bleaching action of moist sulphur di-oxide is because of its (1) basic property (2) acidic property (3) oxidising property (4) reducing property

Last Answer : oxidising property

Bleaching action of chlorine is by - (1) Decomposition (2) hydrolysis (3) reduction (4) oxidation

Description : Bleaching action of chlorine is by - (1) Decomposition (2) hydrolysis (3) reduction (4) oxidation

Last Answer : (4) oxidation Explanation: Chlorine bleaches by the process of oxidation. It needs moisture for its bleaching action. Chlorine reacts with water to form hydrochloric and hypochlorous acids.

Bleaching action of chlorine is by - (1) decomposition (2) hydrolysis (3) reduction (4) oxidation

Description : Bleaching action of chlorine is by - (1) decomposition (2) hydrolysis (3) reduction (4) oxidation

Last Answer : (4) oxidation Explanation: Chlorine bleaches by the process of oxidation. It needs moisture for its bleaching action. Chlorine reacts with water to form hydrochloric and hypochlorous acids.

Bleaching action of chlorine is by----? A. Oxidation (Answer) B. Reduction C. Decomposition D. Hydrolysis

Description : Bleaching action of chlorine is by----? A. Oxidation (Answer) B. Reduction C. Decomposition D. Hydrolysis

Last Answer : A. Oxidation (Answer)

A gas which bleaches substances by reduction process is

Description : A gas which bleaches substances by reduction process is

Last Answer : A gas which bleaches substances by reduction process is A. `CaOCl_(2(aq))` B. `H_(2)O_(2(aq))` C. `O_(3)` D. `SO_(2(aq))`

A gas which bleaches substances by reduction process is

Description : A gas which bleaches substances by reduction process is

Last Answer : A gas which bleaches substances by reduction process is A. Moist `Cl_(2)` B. `SO_(2)` C. `O_(3)` D. Dry `Cl_(2)`

With the DPI method of inspection after the contact time has elapsed the dye should be removed by: a) Spraying the surface with the remover till all dye has gone then wipe with clean cloth b) Spraying with the developer then wiping with a cloth c) Wipe clean, using a clean cloth soaked in a solvent remover d) it doesn’t matter how it is done as long as all traces of dye are removed

Description : With the DPI method of inspection after the contact time has elapsed the dye should be removed by: a) Spraying the surface with the remover till all dye has gone then wipe with clean cloth b) Spraying with ... remover d) it doesn't matter how it is done as long as all traces of dye are removed

Last Answer : c) Wipe clean, using a clean cloth soaked in a solvent remover

What do you call dark brown bread (from colouring) whose ingredients are "corn meal, colour, and water"?

Description : What do you call dark brown bread (from colouring) whose ingredients are "corn meal, colour, and water"?

Last Answer : ”...small dark grains”

Do you ever find yourself overwhelmed by the amount of high visibility colouring around us?

Description : Do you ever find yourself overwhelmed by the amount of high visibility colouring around us?

Last Answer : No. Once again, I seem to have the exact opposite problem. Here, in the U.S. it seems, at least to me that everything is bland, beige, concrete colored. I am so happy and pleased when I ... often so much color. I would love that. Like that painted ladies, the Victorian homes of San Francisco.

Colouring agent fo plasma is `:-`

Description : Colouring agent fo plasma is `:-`

Last Answer : Colouring agent fo plasma is `:-` A. Billiverdin B. Stercobillinogen C. Urobillinogen D. Urochrome

How do test results influence the colouring service?

Description : How do test results influence the colouring service?

Last Answer : Need answer

Scouring is a finishing operation during the manufacture of fibre, which aims at __________ of fibres. (A) Improving the stretchability (B) Dyeing/colouring (C) Detergent solution washing (D) Glycol soaking

Description : Scouring is a finishing operation during the manufacture of fibre, which aims at __________ of fibres. (A) Improving the stretchability (B) Dyeing/colouring (C) Detergent solution washing (D) Glycol soaking

Last Answer : (C) Detergent solution washing

In the drawing and colouring contest, the boys were told to design ............... (a) bikes (b) motorboats (c) home (d) dresses

Description : In the drawing and colouring contest, the boys were told to design ............... (a) bikes (b) motorboats (c) home (d) dresses

Last Answer : (b) motorboats

Pick out the wrong statement pertaining to the soap manufacture. (A) Transparent soaps are made by cold process (B) Organic pigments are used as colouring materials in the soap manufacture (C) Both laundry as well as toilet soaps are manufactured by hot process (D) Colourless rosin is used in the manufacture of laundry soaps

Description : Pick out the wrong statement pertaining to the soap manufacture. (A) Transparent soaps are made by cold process (B) Organic pigments are used as colouring materials in the soap manufacture (C) ... soaps are manufactured by hot process (D) Colourless rosin is used in the manufacture of laundry soaps

Last Answer : (A) Transparent soaps are made by cold process

The map colouring problem can be solved using which of the following technique? (A) Means-end analysis (B) Constraint satisfaction (C) AO* search (D) Breadth first search

Description : The map colouring problem can be solved using which of the following technique? (A) Means-end analysis (B) Constraint satisfaction (C) AO* search (D) Breadth first search

Last Answer : (B) Constraint satisfaction

Figure P shows an isometric view of an object made with a single sheet of cardboard. Figure Q shows the front view of the same object after colouring. Which option shows the object after it is cut open?

Description : Figure P shows an isometric view of an object made with a single sheet of cardboard. Figure Q shows the front view of the same object after colouring. Which option shows the object after it is cut open?

Last Answer : C

While many different gases are found in the atmosphere, a number do NOT contribute significantly to solar heating of the atmosphere. Which TWO of the following gases do NOT absorb much heat? w) carbon dioxide x) nitrogen y) water vapor z) oxygen

Description : While many different gases are found in the atmosphere, a number do NOT contribute significantly to solar heating of the atmosphere. Which TWO of the following gases do NOT absorb much heat? w) carbon dioxide x) nitrogen y) water vapor z) oxygen

Last Answer : ANSWER: X and Z -- NITROGEN and OXYGEN

STATEMENT-1 : `H_(2)SO_(4)` can not act as reducing agent. STATEMENT-2 : Sulphur can not increase its oxidation number beyond `+6`.

Description : STATEMENT-1 : `H_(2)SO_(4)` can not act as reducing agent. STATEMENT-2 : Sulphur can not increase its oxidation number beyond `+6`.

Last Answer : STATEMENT-1 : `H_(2)SO_(4)` can not act as reducing agent. STATEMENT-2 : Sulphur can not increase ... False. D. If both Assertion & Reason are False.

Assertion :- Nitrous acid `(HNO_(2))` may act as an oxidising agent as well as a reducing agent. Reason :- The oxidation number of Nitrogen remains sa

Description : Assertion :- Nitrous acid `(HNO_(2))` may act as an oxidising agent as well as a reducing agent. Reason :- The oxidation number of Nitrogen remains sa

Last Answer : Assertion :- Nitrous acid `(HNO_(2))` may act as an oxidising agent as well as a reducing agent. ... False. D. If both Assertion & Reason are False.

Which conditions are fulfilled in case of combustion? (a) Oxygen is reduced (b) Burning compound undergoes oxidation (c) Oxygen is reducing agent (d) Both (a) and (b)

Description : Which conditions are fulfilled in case of combustion? (a) Oxygen is reduced (b) Burning compound undergoes oxidation (c) Oxygen is reducing agent (d) Both (a) and (b)

Last Answer : (d) Both (a) and (b)

Catalytic converters are fitted in to automobiles for reducing emission of poisonous gases, having expensive metals namely.

Description : Catalytic converters are fitted in to automobiles for reducing emission of poisonous gases, having expensive metals namely.

Last Answer : Catalytic converters are fitted in to automobiles for reducing emission of poisonous gases, having ... Lead and Cadmium D. copper and cadmium

Higher fuel combustion efficiency cannot be achieved by (A) Preheating of fuel gases & combustion air (B) Reducing sulphur content in the fuel (C) Adopting proper fuel firing technique & fuel preparation (D) Supplying correct amount of combustion air

Description : Higher fuel combustion efficiency cannot be achieved by (A) Preheating of fuel gases & combustion air (B) Reducing sulphur content in the fuel (C) Adopting proper fuel firing technique & fuel preparation (D) Supplying correct amount of combustion air

Last Answer : (B) Reducing sulphur content in the fuel

The Kyoto Protocol is for a. limiting Green house gases b. Ozone depleting substance c. Reducing acid rain d. None of the above

Description : The Kyoto Protocol is for a. limiting Green house gases b. Ozone depleting substance c. Reducing acid rain d. None of the above

Last Answer : a. limiting Green house gases

Sometimes water is sprayed during coal charging in the coke oven, which helps in (A) Prevention of clinker formation in the oven (B) Controlling the dust nuisance while charging the coal (C) Reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO & H2 in the gas (due to the endothermic reaction represented by C + H2O = CO + H2 ) (D) All (A), (B) and (C)

Description : Sometimes water is sprayed during coal charging in the coke oven, which helps in (A) Prevention of clinker formation in the oven (B) Controlling the dust nuisance while charging the coal (C) Reducing the cracking of hydrocarbons in ... represented by C + H2O = CO + H2 ) (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Assertion : Bleacing action of `SO_(2)` is due to reduction Reason : Bleaching action of all bleaching agents is due to reduction

Description : Assertion : Bleacing action of `SO_(2)` is due to reduction Reason : Bleaching action of all bleaching agents is due to reduction

Last Answer : Assertion : Bleacing action of `SO_(2)` is due to reduction Reason : Bleaching action of all ... -I is not correct and Statement-II is correct

Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc? (A) Sodium silicate (B) Sodium borate (C) Sodium tripolyphosphate (STPP) (D) Caustic soda

Description : Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc? (A) Sodium silicate (B) Sodium borate (C) Sodium tripolyphosphate (STPP) (D) Caustic soda

Last Answer : (B) Sodium borate