Description : Woollens keep us warm in winter because they (a) produce more warmth (b) are good absorbers of heat (c) do not allow our body heat to escape (d) do not allow cool air to enter
Last Answer : Ans:(c)
Description : Give scientific reason of the following : a) Colour blindness is more common in men than in women b) Light coloured clothes are generally worn in summer c) A person is hurt more when he falls ... ground than on soft d) Deforestation causes more floods e) The man-hole covers are generally round
Last Answer : a) Colour blindness is more common in men than in women Women have the sex chromosomes XX, while men have the chromosomes XY. The gene for normal colour vision is found on the X- ... of flowing water. When these trees are cut the natural barriers ultimately vanish and more floods are caused
Description : In cold countries alcohol is preferred to mercury as a thermometric liquid because (a) alcohol is a better conductor of heat (b) alcohol can be coloured and its level seen easily (c) alcohol has a lower freezing point than mercury (d) alcohol is cheaper than mercury
Description : During summer, we feel comfortable under a fan because it (a) throws cool air on us (b) sets the air in motion, thereby increasing the evaporation of sweat (c) produces convection currents (d) produces air which carries heat away from the body
Last Answer : Ans:(b)
Description : Late afternoons I often bathe. I'll soak in water piping hot. My essence goes through my see through clothes. Used up am I; I've gone to pot. What am I? -Riddles
Last Answer : I'm a tea bag!
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 : They are preferred as wall treatment because of wide variety of designs & colours creating an illusionary impression. a. Glass b. wall paper c. Cladding d. Painting
Last Answer : b. wall paper
Description : All the six faces of a cube of a cube are coloured with six different colours - black, brown, green, red, white and blue. 1. Red face is opposite to the black face. 2. Green face is between red and black ... face is in the bottom. Which face is opposite to green ? (a)Red (b)white (c) blue (d)brown
Last Answer : (c) blue
Description : All the six faces of a cube of a cube are coloured with six different colours - black, brown, green, red, white and blue. 1. Red face is opposite to the black face. 2. Green face is between red and black faces ... , brown, red (b) Blue, black, red, white (c) Red, black, blue, white (d) None of these
Last Answer : (a) Black, white, brown, red
Description : A cuboid shaped wooden block has 6 cm length, 4 cm breadth and 1 cm height. 2. Two faces measuring 4 cm x 1 cm are coloured in black. 3. Two faces measuring 6 cm x 1 cm are coloured in red. 4. Two faces ... and black colours on at least one side of the cube will be formed? (a)16 (b)12 (c)10 (d)4
Last Answer : Answer key : (d)
Description : In the case of peppered moth (Biston betularia) the black-coloured form became dominant over the light-coloured form in England during industrial revolution. This is an example of (a) ... acquired due to the darker environment (d) natural selection whereby the darker forms were selected.
Last Answer : (d) natural selection whereby the darker forms were selected.
Description : White clothes are cooler than black ones because they – (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely
Last Answer : (2) reflect all the light that reaches them Explanation: The coolness and warmth associated with clothes is because of their reflective or absorptive capacities. White clothes are good reflectors of light, thereby keeping the body cool. The opposite is the case with black clothes.
Description : White clothes are cooler than black ones because they (1) absorb all the light that reaches them (2) reflect all the light that reaches them (3) will not allow the light to penetrate (4) cool the sunlight completely
Last Answer : reflect all the light that reaches them
Description : Black and Blue. Red and Green. Yellow and Blue. Green and Grey. I am all colours. You can try to get close to me, but you can't escape my vision. If you get greedy, you will try to take your colours for yourself, but before you know it, I will be eating you for lunch. What am I? -Riddles
Last Answer : A Chameleon.
Description : Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer, thousands of migratory birds from Siberia and other ex
Last Answer : Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer ... C. Carbett National Park D. Keolado National Park
Description : Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer, thousands of migratory birds from Siberia and other extremely cold northern regions move to (a) Western Ghat (b) Meghalaya (c) Corbett National Park (d) Keoladeo National Park.
Last Answer : (d) Keoladeo National Park.
Description : Pick out the wrong statement. (A) Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value (B) Environmental pollution by ... in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere
Last Answer : (D) The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere
Description : A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the (A) Global warming (B) Green house (C) Atmospheric effect (D) Ionosphere
Last Answer : (B) Green house
Description : If a small electric motor has been submerged in saltwater for a short period of time, you should _____________. A. send it ashore for rewinding B. rinse it with warm freshwater and bake it dry ... and bake with internal heat D. clean it with carbon tetrachloride and blow it out with compressed air
Last Answer : Answer: B
Description : The main problem with such a heat treatment of stainless steel pipe spools and the reason why it is not regularly employed is: a) Controlling the rate of the temperature rise b) Controlling the cooling c) The length of the soak period d) High risk of distortion
Last Answer : d) High risk of distortion
Description : Why does red paint on cars fade faster than other colours?
Last Answer : Clear coat finishes, from the factory, have just about eliminated the red paint color from fading on new vehicles. the color fading has something to do with the pigment color in red paint.
Description : My hands and feet sweat during winter and summer. What is the solution ?
Last Answer : In fact, I have seen in the middle of my friends that their hands and feet are sitting in a sweat, but still sweating, in fact, it does not happen in all cases. You can mix cannula powder with ... . And apply butter on hands and feet regularly (the way you apply oil) and you will not sweat anymore.
Description : Intestinal villi are numerous and larger in posterior part of small intestine because (a) Digestion is faster in posterior part (b) Blood supply is poor in anterior part (c) Blood supply is poor in posterior part. (d) There is more digested food in posterior part
Last Answer : (d) There is more digested food in posterior part
Description : Light colours absorb less heat therefore these are not heated as much as the black colour.
Last Answer : Ans: Dark colours do not exactly absorb more heat, but they do convert a higher percentage of light into heat. In the sun with a dark coloured shirt it gets hot, where a lighter ... and converted into heat. White objects reflect all visible light, where black objects absorb all visible light.
Description : Clothes keep us warm in winter because they : (1) supply heat (2) do not radiate heat (3) prevent air from contacting the body (4) prevent the heat of the body from escaping
Last Answer : (4) prevent the heat of the body from escaping Explanation: It is just because woolen clothes have fibres and between those fibres air is trapped which reduces heat loss. Air reduces heat loss ... heat from our body gets trapped inside the clothes which makes us feels warmer with the clothes.
Last Answer : prevent the heat of the body from escaping
Description : How long do most auto radiators last before they need to be fixed or replaced?
Last Answer : You can get about ten to fifteen years on your radiator before you would have to change it. You are going to need to flush your coolant about every 60,000 miles to ensure that your radiator stays good and does not get clogged.
Description : Can you recommend some good, intense, fast-paced books that allow for an escape from reality?
Last Answer : If you haven’t read them yet, try Stieg Larsson’s The Girl With the Dragon Tattoo and its two sequels. Once I got into the books, they were hard to put down.
Description : Should I run the car with the radiator cap off to allow air bubbles to escape?
Last Answer : as log as you have it connected correctly, with a reserve tank, it will expel the air on it’s own with the cap in place. It is common to fill the radiator and run the engine with the cap off until it cycles at least once, to get the bulk of the air out.
Description : Why does Israel, who America gives billions of dollars a year to, not have a mutual extradition law with us and allow criminals from the U.S. to flee to Israel to escape prosecution here?
Last Answer : I'm under the impression (and it could be wrong but this is just what I've heard) that we give them millions, not billions. Granted it's hundreds of millions, but yah. Back up the numbers you ... law as it might force us to extradite some people that we don't think should be, think Palestinians).
Description : Which of the listed precautions should be taken when cleaning the internals of a motor with compressed air? A. Open the machine on both ends so as to allow the air and dust to escape. B. Be certain that the ... panel. C. Be certain that the air is clean and as dry as possible. D. All of the above.
Last Answer : Answer: D
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 : Wollen clothes keep the body warm because (1) Wool increases the temperature of the body (2) Wool is a bad conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects
Last Answer : Wool is a bad conductor
Description : Which type of pump used in radiators in racing cars?
Last Answer : Well from what I know, drag racing cars at least, have varying low-volume electric water pumps, or sometimes even contain no radiator, the size can vary on what kind of racing you are doing or if you even find a radiator necessary, I used to work on local cars with my dad.
Description : How hot do steam baseboard radiators get?
Last Answer : answer:Is it steam or hot water? If it is hot water, it will be safe for the cords. Steam can get hot enough to burn skin. You have to have boiling water to produce steam. The radiators you ... similar to the ones we had when we had hot water heat. You will probably love your hot water heat.
Description : Which compound is commonly used as antifreeze in automobile radiators? -Do You Know?
Last Answer : The compound which is added as an antifreeze to the water in automobile radiators is. Solution : Ethylene glycol is miscible in all proportions with water and ethanol but is insoluble in ether. It is widely used as a solvent and as an antifreeze agent.
Description : What Next In The Wonderful World Of Radiators?
Last Answer : On the WeHeat here at BestHeating HQ we have bold colours, textured materials and radiators that feature stylish full-length mirrors that double up as a practical space-saving heating solution for the bedroom.
Description : I would like to paint the heater at home, but first remove a few layers of the previous paint that is starting to peel off. How do you remove it?
Last Answer : At home, preferably mechanically. You can use an emery, a brush, a drill attachment.
Description : How much do scrap yards pay for car radiators in Los Angeles?
Last Answer : The amount a scrap yard will pay for a car radiator in Los Angeles can differ due to various factors. In most cases, the newer the car, the more you will be paid.
Description : Substance used as an anti-freeze in radiators of automobiles is : (1) Methyl alcohol and H2O (2) Methy] alcohol (3) Ethyl alcohol (4) Ethyl alcohol and H2O
Last Answer : (1) Methyl alcohol and H2O Explanation: Methyl alcohol and water are used as an anti-freeze in radiators of automobiles.
Description : Which compound is commonly used as antifreeze in automobile radiators?
Last Answer : Glycerol
Description : In cold countries ethylene glycol is added to water in car radiators. This helps to (a) Reduce the viscosity (b) Make water a better lubricant (c) Lower the freezing point (d) Lower the boiling poin
Last Answer : Lower the freezing point
Description : Horn radiators serve what purpose other than being directional radiators?
Last Answer : Waveguide impedance matching devices.
Description : How To Prevent Leakage In Radiators ?
Last Answer : How To Prevent Leakage In Radiators How To Prevent Leakage In Radiators Pinholes can develop in radiators that lead to leakage. The cause is usually corrosion due to excessive air or mud that might have ... leakage. Raw egg or black pepper can also be put in the radiator to stop the leakage.
Description : Substance used as an anti - freeze in radiators of automobiles is : (1) Methyl alcohol and H2O (2) Methyl alcohol (3) Ethyl alcohol (4) Ethyl alcohol and H2O
Last Answer : Methyl alcohol and H2O
Description : When white light passes through a glass prism, it gets dispersed into colours because (a) glass imparts colours to the light (b) different colours have different speeds in glass (c) interference of light occurs (d) diffraction of light occurs
Description : The sky appears blue because – (1) All colours interfere to produce blue (2) In white light, the blue component dominates (3) The atmosphere scatters blue colour more than the others (4) It is actually blue
Last Answer : (3) The atmosphere scatters blue colour more than the others Explanation: Diffuse sky radiation is solar radiation reaching the Earth's surface after having been scattered from the direct solar beam by ... the atmosphere (approximately 25% of the incident radiation when the sun is high in the Sky.
Description : The sky appears blue because (1) all colours interfere to produce blue (2) in white light, the blue component dominates (3) the atmosphere scatters blue colour more than the others (4) it is actually blue
Last Answer : the atmosphere scatters blue colour more than the others