Fluorescent dyes are added in detergents to
(A) Act as fabric brightener (by converting ultraviolet light to visible light)
thereby improving the whiteness appearance of white fabrics
(B) Attain distinctiveness from other brands
(C) Act as tarnish inhibitor for metals like German silver
(D) None of these

1 Answer

Answer :

(A) Act as fabric brightener (by converting ultraviolet light to visible light)
thereby improving the whiteness appearance of white fabrics

Related questions

Description : Builders are added in soap to act as (A) Cleaning power booster (B) Anti-redeposition agent (C) Corrosion inhibitor (D) Fabric brightener

Last Answer : (A) Cleaning power booster

Description : Pick out the wrong statement. (A) Eosin requirement in tallow soap is about 40-50% which fastens the lather formation, softens the hard soaps and increases its cleansing action (B) Soap powder is ... ., Benzotriazole) is added in soap to facilitate the removal of stains due to tea, blood etc

Last Answer : (D) Tarnish inhibitor (e.g., Benzotriazole) is added in soap to facilitate the removal of stains due to tea, blood etc

Description : Pick out the wrong statement. (A) Azoic dyes are mostly applied on cotton fabrics (B) Basic dyes (e.g. amino derivatives) are applied mostly to paper (C) Mordant dyes are applied mainly to wools (D) None of these

Last Answer : (D) None of these

Description : What are the most commonly used fluorescent dyes ?

Last Answer : The most commonly used fluorescent dyes are fluorescin or rhodamine. Both dyes can be conjugated to Fc region of antibody without affecting the specificity of the antigen.

Description : Carboxymethyl cellulose (CMC) is added in detergents to act as a/an (A) Surfactant (B) Builder (C) Optical brightening agent (D) Anti soil redeposition agent

Last Answer : (D) Anti soil redeposition agent

Description : . Carboxymethyl cellulose (CMC) is added in detergents to (A) Prevent redeposition of soil on cleaned surface (B) Act as optical brightening agent (C) Inhibit corrosion in washing machines made of aluminium (D) None of these

Last Answer : (A) Prevent redeposition of soil on cleaned surface

Description : What kind of fabric is used to make quick dry fabrics?

Last Answer : The quickest fabric to dry is cotton. It is very breathable. Silk is also quick to dry. The hardest fabric to dry is suede. Quick dry fabrics can be made from several different fabrics. ... which have been developed in laboratories. Polyester can be altered to produce a quick dry fabric also.

Description : Moist atmospheric air at high temperature (e.g., in summer) having high concentration of sulphur dioxide causes (A) Fading of dyes on textiles (B) Corrosion, tarnishing & soiling of metals (C) Reduced strength of textiles (D) All (A), (B) and (C)

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

Description : In a filament type light bulb most of the electric power consumed appears as – (1) visible light (2) infra-red rays (3) ultra-violet rays (4) fluorescent light

Last Answer : (2) infra-red rays Explanation: When electricity is passed through the filament, the filament gets hot. Depending on the temperature of the filament, radiation is emitted from the filament. The ... energy converts into visible light and rest of it is emitted as heat or infrared radiation.

Description : How is invisible light changed to visible light in a fluorescent light?

Last Answer : Invisible light photons (ultraviolet) bombard the phosphor atom in the light tube. The phosphor atoms emit visible light photons.

Description : In a filament type light bulb most of the electric power consumed appears as (1) visible light (2) infra-red rays (3) ultra-violet rays (4) fluorescent light

Last Answer : infra-red rays

Description : Is a silver tarnish a physical or chemical change?

Last Answer : It is a chemical change. Oxygen from the air combined chemicallywith the silver to form silver oxide- that is the tarnish.

Description : Will the Sterling Silver 8mm Xox Wedding Ring ever tarnish?

Last Answer : Sterling will tarnish, but if you keep it regularly polished it won't be a problem at all.

Description : The process involved in converting rubber into a thin sheet or coating it on fabric is called (A) Extrusion (B) Mastication (C) Calendaring (D) Vulcanisation

Last Answer : (C) Calendaring

Description : The process involved in converting rubber into a thin sheet or coating it on fabric is called (A) Extrusion (B) Mastication (C) Calendaring (D) Vulcanisation

Last Answer : (C) Calendaring

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

Description : German Silver contains following Metals –

Last Answer : Copper, Zinc, Nickel

Description : Radioisotopes which are used in medical diagnosis are known as what? w) tracers x) silver bullets y) markers z) dyes

Last Answer : ANSWER: W -- TRACERS

Description : The radiation initially produced in fluorescent tube is – (1) infrared (2) ultraviolet (3) microwaves (4) X-rays

Last Answer : (2) ultraviolet Explanation: The primary radiation that is initially produced within a fluorescent lamp is analogous to that emitted by a low pressure mercury lamp. Fluorescent lamps produce UV radiation by ... coating on the inside of the tubes absorbs the UV and converts it to visible light.

Description : The radiation initially produced in fluorescent tube is (1) infrared (2) ultraviolet (3) microwaves (4) X-rays

Last Answer : ultraviolet

Description : What are the methods of converting yarn into fabric?

Last Answer : a) crochetb) knittingc) weaving

Description : The following type of vasodilator is not beneficial in CHF due to systolic dysfunction: A. Calcium channel blocker B. Angiotensin converting enzyme inhibitor C. Nitrate D. Hydralazine

Last Answer : A. Calcium channel blocker

Description : Every hot object emits – (1) X-rays (2) Visible light (3) Infrared rays (4) Ultraviolet rays

Last Answer : (3) Infrared rays

Description : Transition ions absorb light in – (1) infrared region (2) ultraviolet region (3) microwave region (4) visible region

Last Answer : (4) visible region Explanation: Transition metal ions have an incomplete set of 3d electrons. Changes in the energy of these electrons correspond to the energy of visible light. The absorption of visible light by these ions lend colour to gems.

Description : The band of light wavelengths that are too long to be seen by the human eye a. Amber b. Visible c. Infrared d. Ultraviolet

Last Answer : c. Infrared

Description : Band of light waves, that are too short to be seen by human eye. A. Visible B. Infrared C. Ultraviolet D. Amber

Last Answer : C. Ultraviolet

Description : An example of transverse waves is visible light/Ultraviolet

Last Answer : light/x-rays.

Description : Which of the following has the largest wavelength? A. visible light B. x-rays C. infrared light (Answer) D. ultraviolet radiation

Last Answer : C. infrared light (Answer)

Description : It is caused by hydroxide ions in the material ∙ A. visible light absorption ∙ B. infrared absorption ∙ C. ultraviolet absorption ∙ D. ion resonance absorption

Last Answer : D. ion resonance absorption

Description : t is a result of photons of light that are absorbed by the atoms of the glass core molecule. ∙ A. ion resonance absorption ∙ B. infrared absorption ∙ C. ultraviolet absorption ∙ D. visible light absorption

Last Answer : B. infrared absorption

Description : It is caused by valence electrons in the silica material from which the fiber are manufactured. ∙ A. ion resonance absorption ∙ B. infrared absorption ∙ C. ultraviolet absorption ∙ D. visible light absorption

Last Answer : ultraviolet absorption

Description : Most fiber optic light sources emit light in which spectrum? ∙ A. visible ∙ B. infrared ∙ C. ultraviolet ∙ D. X-ray

Last Answer : B. infrared

Description : The band of light frequencies that are too low to be seen by the human eye ∙ A. Infrared ∙ B. X-rays ∙ C. Visible ∙ D. Ultraviolet

Last Answer : Ultraviolet

Description : The band of light frequencies to which human eye will respond ∙ A. Infrared ∙ B. Visible light ∙ C. Ultraviolet ∙ D. Cosmic ray

Last Answer : B. Visible light

Description : The band of light frequencies that are too high to be seen by the human eye. ∙ A. Ultraviolet ∙ B. Visible light ∙ C. Infrared ∙ D. Yellow

Last Answer : ∙ C. Infrared

Description : Most fiber-optic light sources emit light in which spectrum? ∙ a. Visible ∙ b. Infrared ∙ c. Ultraviolet ∙ d. X-ray

Last Answer : ∙ b. Infrared

Description : The band of light wavelengths that are too short to be seen by the human eye ∙ a. Amber ∙ b. Visible ∙ c. Infrared ∙ d. Ultraviolet

Last Answer : c. Infrared

Description : The band of light wavelengths that are too long to be seen by the human eye ∙ a. Amber ∙ b. Visible ∙ c. Infrared ∙ d. Ultraviolet

Last Answer : c. Infrared

Description : Weather satellites transmit cloud cover and temperature-humidity profiles back to Earth using images of which combination of the electromagnetic radiation types? w) infra-red and visible light x) ultraviolet and nuclear magnetic y) ultraviolet and infra-red z) ultraviolet and visible light

Last Answer : ANSWER: W -- INFRA-RED AND VISIBLE LIGHT

Description : The tanning rays of the sun are called: w) infrared rays x) visible light y) ultraviolet rays z) gamma rays

Last Answer : ANSWER: Y -- ULTRAVIOLET RAYS

Description : Every hot object emits _____ (1) X–rays (2) Visible light (3) Infrared rays (4) Ultraviolet rays 

Last Answer : Infrared rays

Description : Transition ions absorb light in : (1) infrared region (2) ultraviolet region (3) microwave region (4) visible region

Last Answer : visible region

Description : Do generic shampoos and detergents differ much from name brands?

Last Answer : If all are drug store quality then no. But if you are comparing Pantene to Redken, yes! A lot of the drug store varieties will use additional fillers that can be damaging to your hair like alcohols or ... i.e. Aveda, Biolage, Redken, etc. You can always ask your stylist what they recommend as well.

Description : Lever Bros. markets a number of different brands of laundry detergents including Radion, Persil Power, Persil Colour and Surf. Each of these specific versions of laundry detergents can be described as: A)a product item B)a product line C)a core product D)a mix item

Last Answer : A)a product item

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

Description : Which brands of fluorescent bulbs have a good rating?

Last Answer : Phillips fluorescent bulbs are a very good brand and mostly recommended by homeowners. Most brand of bulbs will turn out to brake in 3 months or less. Purchase a good quality even if you have to end up paying a little bit more than the other regular brands.

Description : What is correct in regard to high copper amalgam, A. Reacts and strengthens the amalgam by its dispersion properties B. Reacts to form copper-tin phase thereby eliminating the tin-mercury ... thereby eliminating the silver mercury phase D. Reacts and strengthens the amalgam by its grain diffusion

Last Answer : B. Reacts to form copper-tin phase thereby eliminating the tin-mercury phase

Description : Which of the following is not an alloy of tin? (A) White-bearing metal (B) Pewter type metal (C) Soft solder (D) German silver

Last Answer : (D) German silver

Description : Higher concentration of CO2 in atmosphere (A) Allows visible solar radiation (ultraviolet) of short wave-length to pass through (B) Reflects and absorbs the longer wavelength (infra-red) radiations (C) Prevents solar heat being ... in 'heat trap' i.e., global warming (D) All (A), (B) and (C)

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