Description : Outside of cooking utensils are generally left black from below because – (1) it is difficult to clean daily. (2) black surface is a good conductor of heat. (3) black surface is a poor conductor of heat. (4) black surface is a good absorber of heat.
Last Answer : (4) black surface is a good absorber of heat. Explanation: The outside surface of a utensil used for heating is coated black so that it may absorb more heat and make heating quicker. This is because black surface is a good absorber of heat.
Description : Woollen cloth protects the body from cold because – (1) it is a good conductor of heat (2) it is a poor conductor of heat (3) external heat rays enter into the body through the woollen cloth (4) it reflects heat
Last Answer : (2) it is a poor conductor of heat Explanation: It is just because woolen clothes have fibres and between those fibres air is trapped which reduces heat loss. It reduces heat loss because it is an insulator or poor conductor of heat.
Description : Ice is packed in saw dust because – (1) saw dust will not get melted easily. (2) saw dust is poor conductor of heat. (3) saw dust is a good conductor of heat. (4) saw dust does not stick to the ice.
Last Answer : (2) saw dust is poor conductor of heat. Explanation: ice needs to absorb heat energy to melt and become water (called latent heat of fusion). Since saw-dust is a poor conductor of heat, it takes ... required heat energy. This allows ice to remain in solid state for more time when packed in saw dust.
Description : Ice is packed in saw dust because (1) saw dust will not get melted easily. (2) saw dust is poor conductor of heat. (3) saw dust is a good conductor of heat. (4) saw dust does not stick to the ice.
Last Answer : saw dust is poor conductor of heat.
Description : Woollen cloth protects the body from cold because (1) it is a good conductor of heat (2) it is a poor conductor of heat (3) external heat rays enter into the body through the woollen cloth (4) it reflects heat
Last Answer : it is a poor conductor of heat
Description : A white and smooth surface is – (1) good absorber and good reflector of heat (2) bad absorber and good reflector of heat (3) good absorber and bad reflector of heat (4) bad absorber and bad reflector of heat
Last Answer : (2) bad absorber and good reflector of heat Explanation: Shiny surfaces are poor absorbers of heat radiation and the best reflectors of heat radiation. Black surfaces are the best emitters and best absorber of heat radiation.
Description : A white and smooth surface is (1) good absorber and good reflector of heat (2) bad absorber and good reflector of heat (3) good absorber and bad reflector of heat (4) bad absorber and bad reflector of heat
Last Answer : bad absorber and good reflector of heat
Description : . In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because (A) SO3 gas is sparingly soluble in water (B) Water forms an acid mist, which is difficult to absorb (C) The purity of acid is affected (D) Scale formation in the absorber is to be avoided
Last Answer : (B) Water forms an acid mist, which is difficult to absorb
Description : Non-stick cooking utensils are coated with which metal? -Do You Know?
Last Answer : Teflon In scientific terms its called polytetrafluoroethylene
Description : What is the polymer T used as a nonstick coating in cooking utensils ?
Last Answer : Answer : Polytetrafluoroethylene ( PTFE) or Teflon is a polymer used as a nonstick coating in cooking utensils .
Description : Are silicone cooking utensils safe for my family?
Last Answer : Yes, silicone cooking utensils are safe for your family. They are safer than plastic to cook with, especially at higher heats. You can even find silicone baking cups!
Description : Should I use plastic or metal kitchen cooking utensils?
Last Answer : That all depends on your cookware. Most coated cookware requires the use of plastic utensils to ensure the coating isn't damaged. Most non-coated cookware can be used with metal utensils. Consult the packaging that came with your cookware for instructions or just simply be safe and use plastic.
Description : How many kitchen cooking utensils usually come in a set?
Last Answer : Cooking utensil sets usually range in the numbers of utensils in the set. Usually these sets range from 6 pieces to 24 pieces. You can find more information online at www.cooking.com.
Description : Is it safe to use teflon utensils when you're cooking?
Last Answer : It is safe to use Teflon cookware.
Description : Is silicone the best type of cooking utensils?
Last Answer : The debate of using silicone cooking utensils are still ongoing and each user may have different opinion about using silicone cooking utensils. However silicone has received several good reviews and recommendation by consumer websites.
Description : What are the best types of cooking utensils to use on stainless steel pans?
Last Answer : It is best to use vinyl and silicone cooking utensils with your stainless steel cookware, but other stainless steel utensils are fine too. Since stainless steel does not have a coating that you can scratch off. you can use anything with it!
Description : Which of the following is used as no coating for Cooking utensils? (1) Perspex (2) Styrofoam (3) Polystyrene (4) (4)Teflon
Last Answer : (4)Teflon Explanation: The non-stick coating used mainly for coating cooking utensils is made using PTFE (polytetrafluoroethylene) that is also known by the name Teflon. Teflon is an inert polymer ... containing substances wet it and it has one of the lowest coefficients of friction of any solid.
Description : Non-stick cooking utensils are coated with which metal?
Last Answer : Teflon
Description : The non-stick coating on pan and other cooking utensils is made from __________. a) rayon b)Teflon c)melamine d)PVC
Last Answer : b)Teflon
Description : Which of the following is used as non-stick coating for cooking utensils? (1) Perspex (2)Styrofoam (3) Polystyrene (4)Teflon
Description : Pressure Cooker cooks faster because (1) boiling point decreases with rise of pressure (2) it cooks the food at low pressure (3) higher temperature is attained for cooking (4) the material of the cooker is a good conductor
Last Answer : (3) higher temperature is attained for cooking Explanation: In pressure cooker boiling point of water increases due to high pressure.
Last Answer : higher temperature is attained for cooking
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 : 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 : What is the way to get rid of headaches ? I am 23 years old. I have been suffering from cold since I was a child. The problem of cold and cough can be seen only when it is mildly ... this. Seen more in the afternoon. Please someone help with the right solution. This daily pain has become unbearable.
Last Answer : The problem is migraine. I have my own. The problem is a little cold. There is no prescriptive drug that will stop the flow of emotions, though their effects can be curtailed. However, it can be ... do , I am currently controlling myself from using the phone. And I am doing math for the test.
Description : (1) waste water released from kitchen Explanation: Sullage is a term used to descibe wastewater that wises as a byproduct of daily human activities such as showering, washing kitchen utensils, and doing ... a mixture of water, soap, detergent, bleach, dirt, and other compounds discarded after use.
Last Answer : A solution is - (1) a homogeneous mixture of two or more substances (2) a solid dissolved in a liquid (3) a solid dissolved i water (4) a mixture of two liquids
Description : Mud houses are cooler in summers and wanner in winters as compared to brick houses because (1) mud is a good conductor (2) mud is a bad conductor (3) mud is a poor insulator (4) evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters
Last Answer : (2) mud is a bad conductor Explanation: The houses made of mud and thatched roofs are cool in summer and warm in winter as the thatched roof contains large amount of trapped air and also mud is ... . In summer, the outside heat cannot enter the house and in winter, inside heat cannot flow outside.
Description : Mud houses are cooler in summers and warmer in winters as compared to brick houses because (1) mud is a good conductor (2) mud is a bad conductor (3) mud is a poor insulator (4) evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters
Last Answer : mud is a bad conductor
Description : In a charged hollow metal conductor, the charge is w) on the inside surface only x) on both the inside and outside surfaces y) on the outside surface only z) only between the inside and outside surfaces
Last Answer : ANSWER: Y -- ON THE OUTSIDE SURFACE ONLY
Description : The earth is a – (1) good reflector of heat (2) non-absorber of heat (3) good absorber and good radiator of heat (4) bad absorber and bad radiator of heat
Last Answer : (3) good absorber and good radiator of heat Explanation: The earth's surface radiates as a black body, since it aborts and radiates with nearly 100 percent efficiency for its temperatures. Gases, on the contrary, are selective absorbers and radiators.
Description : The earth is a (1) good reflector of heat (2) non-absorber of heat (3) good absorber and good radiator of heat (4) bad absorber and bad radiator of heat
Last Answer : Bad absorber and bad radaitor because all bad absorber are bad emitter. As well
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 : Moderating material used in a thermal-reactor should be a (A) Good absorber of neutrons (B) Solid substance (C) Poor absorber of neutrons (D) None of these
Last Answer : (C) Poor absorber of neutrons
Description : Copper wires are generally used for electrical power transmission instead of iron wire because (1) copper is cheaper than iron (2) copper is lighter than iron (3) copper is a better conductor of electricity than iron (4) copper can take higher power than iron
Last Answer : (3) copper is a better conductor of electricity than iron Explanation: Copper is generally preferred for electrical power transmission instead of iron because of its high electrical conductivity and low resistivity.
Description : Copper wires are generally used for electrical power transmission instead of iron wire because : (1) copper is cheaper than iron (2) copper is lighter than iron (3) copper is a better conductor of electricity than iron (4) copper can take higher power than iron
Last Answer : copper is a better conductor of electricity than iron
Description : Before X-ray examination (coloured Xray) of the stomach, patients are given suitable salt of barium because. (1) barium is a good absorber of X-rays and helps stomach to appear clearly (2) barium ... clearly (3) barium allows X-rays to pass through the stomach (4) barium salts are easily available
Last Answer : (1) barium is a good absorber of X-rays and helps stomach to appear clearly
Description : I have never driven a car in countries outside the USA that use the left side lane and steering wheel on right side of the car. Is it difficult to adjust to the left side of the road and opposite side steering wheel (in Ireland)?
Last Answer : Your question will most certainly have subjective answers. Personally, I have driven in Japan where they have right-hand side steering wheels and driving on the left side of the road. The ... look for similar driving patterns, like staying within the lines, and being cognizant of the environment.
Description : Vegetables are cooked in lesser time by adding a pinch of salt while cooking because (1) boiling point of water increases (2) latent heat of vaporization of water decreases (3) latent heat of vaporization of water increases (4) boiling point of water decreases
Last Answer : (1) boiling point of water increases Explanation: Adding salt raises the boiling point of water, which allows food to cook at higher temperature. The higher the temperature, the higher the rate of heat transfer between the food and water, thus it cooks more quickly.
Description : In the pressure cooker, cooking is faster because the increase in vapour pressure - (1) increase the specific heat (2) decreases the specific heat (3) decreases the boiling point (4) increases the boiling point
Last Answer : (4) increases the boiling point
Last Answer : boiling point of water increases
Description : Name the following: (a) A metal, which is preserved in kerosene. (b) A lustrous coloured non-metal. (c) A metal, which can melt while kept on palm. (d) A metal, which is a poor conductor of heat. -Chemistry
Last Answer : a) Sodium is preserved in kerosene. (b) Iodine is lustrous coloured non-metal. (c) Gallium. ‘ (d) Lead.
Description : Which one of the following non-metals is not a poor conductor of electricity? (1) Sulphur (2) Selenium (3) Bromine (4) Phosphorus
Last Answer : (2) Selenium Explanation: Selenium is a non-metallic element; it is not a very good conductor of heat and electricity.
Description : While cooking, if the bottom of the vessel is getting blackened on the outside, it means that (1) The food is not cooked completely (2) The fuel is not burning completely (3) The fuel is wet (4) The fuel is burning completely
Last Answer : (2) The fuel is not burning completely Explanation: If we observe the bottoms of cooking vessels getting blackened, it means that the air holes are blocked and fuel is getting wasted.
Description : Metal tea pots have wooden handles because – (1) wood is a bad conductor of heat (2) it prevents electric shock (3) it gives beauty to the pots (4) it is hygienic
Last Answer : (2) it prevents electric shock Explanation: Wood is a bad conductor of heat due to the arrangement of its molecules. As the molecules of wood are far from each other, they cannot pass heat through them.
Description : Wollen clothes keep the body warm because – (1) Wool increases the temperature of the body (2) Wool is a had conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects
Last Answer : (2) Wool is a had conductor Explanation: It is just because woolen clothes have fibres and between those fibres air is trapped which reduces heat loss. Air reduces heat loss because it is an ... have a greater bulk than other textiles, and retain air, which causes the product to retain heat.
Description : Water is not suitable as a calorimetric substance because it – (1) has high specific heat (2) is a good conductor (3) has high boiling point (4) low latent heat of vaporization
Last Answer : (1) has high specific heat Explanation: The specific heat of water is higher than all other common substances. Hence, water is used for heating purposes (as in hot water bottles) and for cooling ... the liquids, mercury has the lowest specific heat due to which it is used as a thermometric liquid.
Description : Water is not suitable as a calorimetric substance because it : (1) has high specific heat (2) is a good conductor (3) has high boiling point (4) low latent heat of vapourization
Last Answer : has high specific heat
Description : Metal tea pots have wooden handles because (1) wood is a bad conductor of heat (2) it prevents electric shock (3) it gives beauty to the pots (4) it is hygienic
Last Answer : it prevents electric shock