Hot coffee is poured simultaneously in four metallic tumblers painted outside with different types of paints. After some time, the coffee will be found coldest in the tumbler painted (a) rough white (b) shining white (c) rough black (d) shining black

1 Answer

Answer :

Ans:(c)

Related questions

Description : A pyrex tumbler does not crack when hot water is poured into it because pyrex (a) is a strong material (b) does not expand much on heating (c) is a good conductor of heat (d) expands equally from inside and outside

Last Answer : Ans:(b)

Description : Why does a thick glass tumbler crack when boiling hot water is poured into it?

Last Answer : Matter expands when it is heated. When you pour boiling waterinto a glass the bottom becomes heated and expands while the restof the glass is at a different temperature. As the ... expand evenly, preventing that stress from happening. Slow andeven temperature changes will prevent the breaking.

Description : When hot liquid is poured into a thick glass tumbler, it cracks because glass – (1) is a bad conductor of heat so only inner surface expands (2) has high temperature coefficient of expansion (3) has a very low specific heat (4) has low temperature coefficient of expansion

Last Answer : (1) is a bad conductor of heat so only inner surface expands Explanation: When hot liquid is poured into a thick glass tumbler, it cracks because glass is a bad conductor of heat so only inner surface expands.

Description : Why does an ordinary glass tumbler crack when very hot tea or milk is poured in it?

Last Answer : Answer: When a hot liquid is poured into a tumbler, the inner layer of the tumbler gets heated, it expands before the outer layer and an unequal expansion of both layers causes the tumbler to crack.

Description : When hot liquid is poured into a thick glass tumbler, it cracks because glass : (1) is a bad conductor of heat so only inner surface expands (2) has high temperature coefficient of expansion (3) has a very low specific heat (4) has low temperature coefficient of expansion

Last Answer :  is a bad conductor of heat so only inner surface expands 

Description : A tank painted with which of the following coloured paints, would heat up maximum by radiation from sun? (A) Yellow paint (B) White paint (C) Black paint (D) Grey paint

Last Answer : (C) Black paint

Description : Once a cup of hot coffee is poured how soon should you finish it?

Last Answer : Before the milk you put into it turns sour.

Description : A hot body will radiate heat most rapidly, if its surface is (A) White & rough (B) Black & rough (C) White & polished (D) Black & polished

Last Answer : (B) Black & rough

Description : Where can I find a coffee tumbler like this?

Last Answer : Don’t quite get what your asking. /edit Ah, now I get it.

Description : Why does moisture gather outside a tumbler containing cold water?

Last Answer : Answer: The water vapour in the air condenses on cooling and appears as droplets of water.

Description : Like ordinary paints do metallic paints also fade?

Last Answer : Metallic paints do fade. It depends on the quality and the type of the aluminium paste used. Usually in most of the metallic paints, the commonly used pigment is aluminium pigment in the form of ... a short period of coating, whereas cars coated with metallic paints shine even after a long time.

Description : When hot-water is sprinkled on a hotter glass tumbler, it breaks because – (1) glass suddenly expands (2) glass suddenly contracts (3) water evaporates (4) glass reacts chemically with water

Last Answer : (2) glass suddenly contracts Explanation: If the poured liquid is relatively hotter or colder in comparison to the tumbler, it will break. When hot water is poured into a tumbler there is an uneven increase in the thermal expansion of the walls of the vessel.

Description : When hot-water is sprinkled on a hotter glass tumbler, it breaks because (1) glass suddenly expands (2) glass suddenly contracts (3) water evaporates (4) glass reacts chemically with water

Last Answer : glass suddenly contracts

Description : Why a solar cooker painted black form outside? -Science

Last Answer : Black surface absorbs more heat as compared to white or reflecting surface under identical conditions.

Description : Shouldn't the cream be poured in before the coffee?

Last Answer : Yes, I do that at home. But stirring or just walking to work with a cup in hand mixes it up easily enough.

Description : How do you replace ignition tumblers on 1951 Ford car?

Last Answer : Need answer

Description : Do compost "tumblers" work?

Last Answer : Compost tumblers or "barrel turning units" can work efficiently if materials are chopped, moistened and contain adequate nitrogen, but they’re more work and materials often dry out too quickly. They’re best for mixed food and yard waste composting.

Description : What do you think should be the punishment for the "Hot Sauce Mom" who poured hot sauce in her 7 year old son's mouth and put him in a cold shower?

Last Answer : Someone larger, stronger, and in a position of authority over her should pour hot sauce into her mouth and scream in her face while she’s in a cold shower. Poetic justice.

Description : What would happen to plate poured with agar that is too hot or cool?

Last Answer : We Wouldn't Survive

Description : The large plates of solar pannels are painted? A. Red B. White C. Yellow D. Black (Answer)

Last Answer : D. Black (Answer)

Description : The large plates of solar panels are painted _____. A. White B. Yellow C. Black D. Red

Last Answer : ANSWER: C

Description : The large plates of solar panels are painted _____. A. White B. Yellow C. Black D. Red

Last Answer : ANSWER: C

Description : The large plates of solar panels are painted _____. A. White B. Yellow C. Black D. Red

Last Answer : ANSWER: C

Description : The large plates of solar panels are painted _____. A. White B. Yellow C. Black D. Red

Last Answer : ANSWER: C

Description : Tanks used for the storage of petroleum products (which are inflammable) should be painted with a __________ paint. (A) Black (B) White (C) Red (D) Yellow

Last Answer : (B) White

Description : A young infant may be feeding entirely on mother's milk which is white in colour but the stools which the infant passes out is quite yellowish. What is this yellow colour due to? (a) ... bile juice (b) Undigested milk protein casein (c) Pancreatic juice poured into duodenum (d) Intestinal juice

Last Answer : (a) Bile pigments passed through bile juice

Description : I am a window, I am a lamp, I am clouded, I am shining, and I am coloured; set in white, I fill with water and overflow. I say much, but I have no words. What am I? -Riddles

Last Answer : I am an eye.

Description : The main reason for making the copper calorimeter (used in bomb calorimeter) silvery white and shining/polished is to (A) Minimise its corrosion (B) Avoid radiation heat loss (C) Make it look attractive (D) None of these

Last Answer : (B) Avoid radiation heat loss

Description : A body absorbs heat most if it is – (1) black and rough (2) black and smooth (3) white and rough (4) white and smooth

Last Answer : (1) black and rough Explanation: A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence. Another property is roughness. Sand is rough and black and so it is a good absorber.

Description : A __________ surface has the maximum thermal emissivity out of the following. (A) Black & smooth (B) Black & rough (C) White & smooth (D) White & rough

Last Answer : (B) Black & rough

Description : Infrared rays are absorbed best by which one of the following. Is it: w) bodies of air x) white bodies with rough surfaces y) mirrors z) black bodies with rough surfaces

Last Answer : ANSWER: Z -- BLACK BODIES WITH ROUGH SURFACES

Description : A body absorbs heat most if it is (1) black and rough (2) black and smooth (3) white and rough (4) white and smooth

Last Answer : black and rough

Description : If a child is a back bencher and is unable to watch the black board clearly. As a result he stands, sees and sits repeatedly. What inference will you draw regarding the case? Options: A) The child is ... is under shining effect of light C) The child has defective-vision D) both (a) and (C)

Last Answer : D) both (a) and (C) 

Description : A child is a back -bencher and is unable to watch the black-board clearly, therefore he stands, see and sit repeatedly. It disturbs the nearby classmates, what inference will you draw with reference to the ... defective eyes C) The black-board may has shining effect of light D) None of the above

Last Answer : A) The child has poor eye-sight 

Description : On placing an inverted tumbler over a burning candle, the flame extinguishes after some – time . This is because of non –availability of a) oxygen b)water vapour c)carbon dioxide d)wax

Last Answer : a) oxygen

Description : White paints are made using the oxides of?

Last Answer : Titanium

Description : In silvery paints, the main constituent present is - (1) Aluminium powder (2) Silver powder (3) Lead powder (4) White lead

Last Answer : (1) Aluminium powder Explanation: In silvery paints, the main constituent is aluminium powder.

Description : The material generally not used as extender in paints, is (A) Powdered silica (B) Gypsum (C) Talc (D) Zinc white

Last Answer : Answer: Option D

Description : Paints with white lead base are suitable for painting of (A) Wood work (B) Iron work (C) Both wood work and iron work (D) None of the above

Last Answer : Answer: Option A

Description : The pigment used in paints for corrosive resistance, is (A) White lead (B) Ferrous oxide (C) Zinc white (D) Red lead

Last Answer : Answer: Option D

Description : Assertion A : Paints with white lead base are not recommended for painting of iron works. Reason R : Paints with white lead base do not check rusting of iron. Select your answer according to the coding system given below: ... of A (C) A is true but R is false (D) A is false but R is true

Last Answer : Answer: Option A

Description : In silvery paints, the main constituent present is (1) Aluminium powder (2) Silver powder (3) Lead powder (4) White lead

Last Answer : Aluminium powder

Description : what is tan and rough on the outside and orange on the inside?

Last Answer : cantaloupe

Description : The commonly used colour pigment in paints, is (A) Ambers (B) Carbon black (C) Iron oxide (D) All the above

Last Answer : Answer: Option D

Description : Take a 250 mL beaker/glass tumbler. Fill half of it with water. Now carefully cut a small piece of sodium metal. Dry it using filter paper and wrap it in a small piece of cotton. Put the sodium piece wrapped in cotton into the beaker. Observe carefully. -Science

Last Answer : On touching the beaker, it was felt hot. The solution turns the red litmus paper to blue which shows it is basic in nature. Blue litmus paper do not show any colour change with the solution.

Description : I have Tumbler blog.. using a Cargo Theme, does any one know how to change your text title to an image and add on facebook/twitter icons.. Thanks?

Last Answer : Could you post a link to your blog and the image you want to use?

Description : A lighted candle gets extinguished when covered with a tumbler. Why? -Do You Know?

Last Answer : answer:

Description : A student sets up an expirment on photoysthesis as folows : He takes soda water in a glass tumbler and adds chloroplyll into the contents and keeps th

Last Answer : A student sets up an expirment on photoysthesis as folows : He takes soda water in a ... because intact chloroplasts are needed for the process.

Description : What type of cup will keep water cold the longest Yeti Solo cup or Rambler Tumbler?

Last Answer : This is a quetion that i need an answer for. It is for a sciencefair project.

Description : A lighted candle gets extinguished when covered with a tumbler. Why?

Last Answer : Because of inadequate supply of air