What happens when a piece of bangle is heated in a candle flame?

What happens when a piece of bangle is heated in a candle flame?
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1 Answer

Answer :

When a piece of bangle is heated in a candle flame, it first becomes soft and then melts

as glass does not have a definite melting point.
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Related questions

A student focuses the image of a candle flame, placed at about 2 m from a convex lens of focal length 10 cm, on a screen. After that he moves gradually the flame towards the lens and each time focuses its image on the screen. (a) In which direction does he move the lens to focus the flame on the screen? (b) What happens to the size of the image of the flame formed on the screen? (c) What difference is seen in the intensity (brightness) of the image of the flame on the screen? (d) What is seen on the screen when the flame is very close (at about 5 cm) to the lens?

Description : A student focuses the image of a candle flame, placed at about 2 m from a convex lens of focal length 10 cm, on a screen. After that he moves gradually the flame towards the lens and each time focuses its ... d) What is seen on the screen when the flame is very close (at about 5 cm) to the lens?

Last Answer : (a) The student moves the lens away from the screen to focus the image because on moving the candle towards the lens, the image distance increases. (b)The size of the image increases when the object ... on the screen. A virtual image is formed behind the candle on the same side of the screen.

Where does the candle flame have the highest temperature?

Description : In the flame at the wick, in the middle of the flame or at the top?

Last Answer : Up to "above" - ​​"bit" above the visible flame.

A candle flame 2 cm high is palced at distance of 2 metere from a wall. How far from the wall must a concave mirror to placed in order to form an imag

Description : A candle flame 2 cm high is palced at distance of 2 metere from a wall. How far from the wall must a concave mirror to placed in order to form an imag

Last Answer : A candle flame 2 cm high is palced at distance of 2 metere from a wall. How far from the wall must ... an images of the flame 6 cm high on the wall ?

Which zone of a candle flame is the hottest? (1) Dark innermost zone (2) Outermost zone (3) Middle luminous zone (4) Central zone

Description : Which zone of a candle flame is the hottest? (1) Dark innermost zone (2) Outermost zone (3) Middle luminous zone (4) Central zone

Last Answer : (3) Middle luminous zone Explanation: The outermost zone of the flame is blue in colour and it is the hottest part. The innermost zone is the least hot and black in colour.

Cannel coal (A) Is non-coking (B) Has a high volatile matter content and burns with a luminous smoky flame (C) Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named (D) All (A), (B) and (C

Description : Cannel coal (A) Is non-coking (B) Has a high volatile matter content and burns with a luminous smoky flame (C) Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named (D) All (A), (B) and (C

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

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

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

The ________ zone of a candle flame is the hottest zone. a) innermost b)outermost c)middle d)none

Description : The ________ zone of a candle flame is the hottest zone. a) innermost b)outermost c)middle d)none

Last Answer : b)outermost

The middle zone of a candle flame is known as the ________ zone. a) luminous b)non-luminous c)wax d)burning

Description : The middle zone of a candle flame is known as the ________ zone. a) luminous b)non-luminous c)wax d)burning

Last Answer : a) luminous

Which bangle is better to wear ?

Last Answer : Khichuri.

Are gold bangle bracelets in fashion?

Description : Are gold bangle bracelets in fashion?

Last Answer : Yes, gold bangle bracelets can be very fashionable. It is nicely paired with gold hoop earrings and dark colors. It is a great choice for fall fashions, which tend to be dark.

The Indian city famous for glass bangle industry is (a) Lucknow (b) Sikandrabad (c) Firozabad (d) Agra

Description : The Indian city famous for glass bangle industry is (a) Lucknow (b) Sikandrabad (c) Firozabad (d) Agra

Last Answer : Ans: (c)

Bhuvana bought 50 dozen of bangles at Rs5 per dozen. She spend Rs.125 on a particular tax and she sold them at 50p per each bangle. What was her profit or loss percent?

Description : Bhuvana bought 50 dozen of bangles at Rs5 per dozen. She spend Rs.125 on a particular tax and she sold them at 50p per each bangle. What was her profit or loss percent?

Last Answer : Cost price of 1 dozen bangles = Rs.5 Cost price of 50 dozen bangles = 50*5=Rs. 250  Amount of tax paid = Rs.125  Total cost price=250+125 = 375  Selling price of total number of bangles=50 * 12 * ½ = 300  Loss = 375 – 300 = 75 loss percentage = (75*100)/375 = 20%

What kind of combustion is observed in alkanes? Why do air holes of a gas burner have to be adjusted when vessel being heated gets blackened by the flame? -Science

Description : What kind of combustion is observed in alkanes? Why do air holes of a gas burner have to be adjusted when vessel being heated gets blackened by the flame? -Science

Last Answer : Alkanes are saturated hydrocarbons and generally burn in air with a blue, non-sooty flame. If the bottoms of the cooking vessels in our homes are getting blackened, it shows that the air holes of the gas stove are getting blocked and the fuel is not burning completely.

Give reasons for the following observations: (a) The element carbon forms a very large number of compounds. (b) Air holes of a gas burner have to be adjusted when the heated vessels get blackened by the flame. (c) Use of synthetic detergents causes pollution of water. -Chemistry

Description : Give reasons for the following observations: (a) The element carbon forms a very large number of compounds. (b) Air holes of a gas burner have to be adjusted when the heated vessels get blackened by the flame. (c) Use of synthetic detergents causes pollution of water. -Chemistry

Last Answer : Answer. (a) Carbon forms large number of compounds since carbon is small in size and can form stable covalent bonds (catenation) and it shows tetravalency. (b) Air holes of gas burner are ... not get blackened. (c) Some synthetic detergents are non-biodegradable, therefore, cause pollution of water.

Which metal gives violet colour in oxidising flame when heated with borax ?

Description : Which metal gives violet colour in oxidising flame when heated with borax ?

Last Answer : Which metal gives violet colour in oxidising flame when heated with borax ? A. Fe B. Pb C. Co D. Mn

Why do cations emit colors when heated in a Bunsen burner flame?

Description : Why do cations emit colors when heated in a Bunsen burner flame?

Last Answer : Atoms were excited by heating, electrons move to a higher energy level and as these electrons fall back to a lower energy level, the specific radiation for the element is emitted.

When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy state, they emit light, which we can observe in - (1) Raman spectra (2) Absorption spectra (3) Emission spectra (4) Fluorescence

Description : When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy state, they emit light, which we can observe in - (1) Raman spectra (2) Absorption spectra (3) Emission spectra (4) Fluorescence

Last Answer : (3) Emission spectra Explanation: When a metal atom is strongly heated, its electrons absorb the heat energy and jump to a higher energy level. When the electron returns to its original position it ... to the energy the electron has released at each stage °fits fall back to its original state.

When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy siate, they emit light, which we can observe in (1) Raman spectra (2) Absorption spectra (3) Emission spectra (4) Fluorescence

Description : When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy siate, they emit light, which we can observe in (1) Raman spectra (2) Absorption spectra (3) Emission spectra (4) Fluorescence

Last Answer : Emission spectra

A piece of magnesium ribbon was heated to redness in an atmosphere of nitrogen and then cooled with water. The gas evolved is

Description : A piece of magnesium ribbon was heated to redness in an atmosphere of nitrogen and then cooled with water. The gas evolved is

Last Answer : A piece of magnesium ribbon was heated to redness in an atmosphere of nitrogen and then cooled with ... . ammonia B. hydrogen C. nitrogen D. oxygen

In order to find the specific heat capacity of an unknown material a 50 g piece is heated to 80 degrees Celsius and fully immersed in a well insulated calorimeter filled with 100 g of water at 10 degr?

Description : In order to find the specific heat capacity of an unknown material a 50 g piece is heated to 80 degrees Celsius and fully immersed in a well insulated calorimeter filled with 100 g of water at 10 degr?

Last Answer : Assuming that the full question, which the questioner failed to post, is given in the Discussion, below.Taking the specific heat capacity of water as 4.2 Joules per gram per degree C, the metal has a specific heat capacity as approx 0.68 Joules/(g °C).

Which of the following is the best example of law of conservation of mass? [NCERT 1975] (A) 12 g of carbon combines with 32 g of oxygen to form 44 g of CO2. (B) When 12 g of carbon is heated in a vacuum there is no change in mass. (C) A sample of air increases in volume when heated at constant pressure but its mass remains unaltered. (D) The weight of a piece of platinum is the same before and after heating in air.

Description : Which of the following is the best example of law of conservation of mass? [NCERT 1975] (A) 12 g of carbon combines with 32 g of oxygen to form 44 g of CO2. (B) When 12 g of carbon is ... mass remains unaltered. (D) The weight of a piece of platinum is the same before and after heating in air.

Last Answer : (A) 12 g of carbon combines with 32 g of oxygen to form 44 g of CO2.

What happens to a nichrome wire in a non-luminous flame?

Description : What happens to a nichrome wire in a non-luminous flame?

Last Answer : The color of wire is unchanged.

What happens when gold ornament is heated with dilute nitric acid?

Description : What happens when gold ornament is heated with dilute nitric acid?

Last Answer : The copper constituent of the ornament reacts with the acid forming greenish copper nitrate solution and reddish brown fumes of nitrogen dioxide. Gold remains unaffected.

What happens when heated aluminium powder is sprinkled into a jar of chlorine gas?

Description : What happens when heated aluminium powder is sprinkled into a jar of chlorine gas?

Last Answer : As heated aluminium powder comes in contact with chlorine, bright flashes are seen forming aluminium chloride.

What happens when: a) When a mixture of sodium acetate and soda lime is heated in a hard glass test tube.

Description : What happens when: a) When a mixture of sodium acetate and soda lime is heated in a hard glass test tube.

Last Answer : Methane gas is evolved. CH 3 COONA + NaOH CaO Na 2 CO 3 + CH 4 b) Methane is burnt in air or oxygen or methane undergoes complete combustion. It forms carbon dioxide and water. CO 2 + H ... ultraviolet light (sunlight). Organic product chloromethane is formed CH 4 + Cl 2 UV CH 3 Cl + HCl

How is silicon carbide formed? OR What happens when silicon and coke are heated?

Description : How is silicon carbide formed? OR What happens when silicon and coke are heated?

Last Answer : When a mixture of silicon and coke is heated in an electric furnace, silicon carbide is formed. It is an endothermic reaction. Si + C SiC

What happens when amorphous silicon is heated?

Description : What happens when amorphous silicon is heated?

Last Answer : When amorphous silicon is heated in air, it oxidizes at the surface level & catches fire.

What happens when ethanol is heated with acidified potassium dichromate solution? Write the chemical equation.

Description : What happens when ethanol is heated with acidified potassium dichromate solution? Write the chemical equation.

Last Answer : Answer. Ethanol is oxidised to ethanoic acid with the help of acidified K2Cr2O7. CH3CH2OH + 2O → CH3COOH + H2O

What happens when baking soda is heated? -Chemistry-10

Description : What happens when baking soda is heated? -Chemistry-10

Last Answer : Sodium hydrogen carbonate (also known as sodium bicarbonate or bicarbonate of soda) has the chemical formula NaHCO3. When it is heated above about 80°C it begins to break down, forming sodium carbonate, water and carbon dioxide. This type of reaction is called a thermal decomposition.

What happens if ice is heated ?

Last Answer : If ice is heated, it will turn into water.

What happens when crystalline Na2CO3 is heated ?

Description : What happens when crystalline Na2CO3 is heated ?

Last Answer : What happens when crystalline Na2CO3 is heated ? a. releases CO2 b. loses H2O c. decomposes into NaHCO3 d. colour changes.

What happens when sulphur is heated in absence of air?

Description : What happens when sulphur is heated in absence of air?

Last Answer : Sulfur is melted.

What happens when carbon is heated with water vapour?

Description : What happens when carbon is heated with water vapour?

Last Answer : What is the answer ?

What happens to jar of pickles when heated?

Description : What happens to jar of pickles when heated?

Last Answer : What is the answer ?

What happens when osmium is heated from 4000°c to 6000°c?

Description : What happens when osmium is heated from 4000°c to 6000°c?

Last Answer : It boils

When a ring of metal is heated what happens to its hole? (1) expands (2) contracts (3) it expands or contracts according to its diameter (4) it expands or contracts according to its coefficient of expansion

Description : When a ring of metal is heated what happens to its hole? (1) expands (2) contracts (3) it expands or contracts according to its diameter (4) it expands or contracts according to its coefficient of expansion

Last Answer : (1) expands Explanation: The hole size will increase because in expansion the size between two molecules, do not increase so when the molecules on the outer edge move outward. Due to expansion, the ... expansion is the tendency of matter to change in volume in response to a change in temperature.

If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated? (1) Increases (2) Decreases (3) Unchanged (4) Depends upon the metal

Description : If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated? (1) Increases (2) Decreases (3) Unchanged (4) Depends upon the metal

Last Answer : (1) Increases Explanation: When a metal plate with a circular hole at its centre is heated, definitely along with the areal expansion of the plate the diameter of the circular hole also increases. Using ... of expansions, we find that the hole radius increases at the same linear rate as the metal.

What happens, When water is heated from 0°C to 10°C the volume of water?

Description : What happens, When water is heated from 0°C to 10°C the volume of water?

Last Answer : First decreases then increases

What happens when nitrates of alkaline earth metal is heated?

Description : What happens when nitrates of alkaline earth metal is heated?

Last Answer : Ans The nitrates are made by dissolution of the carbonates in dilute nitric acid. Magnesium nitrate crystallises with six molecules of water, whereas barium nitrate crystallises as the anhydrous salt. ... hydration enthalpy. All of them decompose on heating to give the oxide like lithium nitrate.

What happens when ferrimagnetic Fe3O4 is heated to 850 K and why?

Description : What happens when ferrimagnetic Fe3O4 is heated to 850 K and why?

Last Answer : Fe3O4 on heating to 850 K becomes paramagnetic. This is due to greater alignment of domains in one direction on heating.

(a) What happens when a Ferromagnetic or Ferrimagnetic solid is heated ? (b) The ions of MgO and NaF all have the same number of electrons and intermolecular distance are about the same (235 & 215 pm). Why are the melting points are so different (2642 °C & 992 °C ?

Description : (a) What happens when a Ferromagnetic or Ferrimagnetic solid is heated ?  (b) The ions of MgO and NaF all have the same number of electrons and intermolecular distance are about the same (235 & 215 pm). Why are the melting points are so different (2642 °C & 992 °C ?

Last Answer : (a) It changes into paramagnetic at hight temperature due to randomization of spins.  (b) The ions in MgO carry two unit charges. In NaCl only one unit charge. Hence electrostatic forces of attraction in MgO are stronger.

What happens to the resistance of copper when it is heated?

Description : What happens to the resistance of copper when it is heated?

Last Answer : It increases.

What happens ,when washing soda is heated ?

Description : What happens ,when washing soda is heated ?

Last Answer : On heating, the decahydrate loses its water of crystallization to form monohydrate. Above 373K, the monohydrate becomes completely anhydrous and changes to a white powder called soda ash.   Carbonate part of sodium carbonate gets hydrolysed by water to form an alkaline solution.  

What happens when nitrates of alkalin earth metal is heated?

Description : What happens when nitrates of alkalin earth metal is heated? 

Last Answer : The nitrates are made by dissolution of the carbonates in dilute nitric acid. Magnesium nitrate crystallises with six molecules of water, whereas barium nitrate crystallises as the anhydrous salt. This again shows ... . All of them decompose on heating to give the oxide like lithium nitrate.  

What happens when Calcium carbonate is heated to 1200 K?

Description : What happens when Calcium carbonate is heated to 1200 K? 

Last Answer : When heated to 1200 K, it decomposes to evolve carbon dioxide.

If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated? (1) Increases (2) Decreases (3) Unchanged (4) Depends upon the metal

Description : If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated? (1) Increases (2) Decreases (3) Unchanged (4) Depends upon the metal

Last Answer : Increases

When a ring of metal is heated what happens to its hole ? (1) expands (2) contracts (3) it expands or contracts according to its diameter (4) it expands or contracts according to its coefficient of expansion

Description : When a ring of metal is heated what happens to its hole ? (1) expands (2) contracts (3) it expands or contracts according to its diameter (4) it expands or contracts according to its coefficient of expansion

Last Answer : expands

What happens when a iron nail or a piece of aluminium wire is dipped in concentrated nitric acid?

Description : What happens when a iron nail or a piece of aluminium wire is dipped in concentrated nitric acid?

Last Answer : Iron nail or aluminium wire does not react with concentrated nitric acid. It makes iron more passive.

Where does the wax from a burning candle go?

Description : Where does the wax from a burning candle go?

Last Answer : It gets burnt up, it’s fuel.