Description : Diamond is a good thermal conductor. But it is an excellent electrical insulator. How?
Last Answer : Diamond crystal is a three-dimensional network of carbon atoms. All carbon atoms in the network are strongly bonded by carbon-carbon covalent bonds. Therefore diamond crystal has a highly ... in diamond crystal to ficilitate electrial conduction. Thus diamond is an excellent electrical insulator.
Description : Graphite is a good (A) Thermal & electrical insulator (B) Conductor of heat (C) Conductor of electricity (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)
Description : What is the thermal conductivity of a perfect heat insulator? (A) Zero (B) One (C) ∞ (D) Between 0 and ∞
Last Answer : (A) Zero
Description : Ice skating is possible and practical because of a unique property of water. Is it because: w) The coefficient of kinetic friction of steel on frozen water decreases with decreasing temperature x ... sublimes y) The melting point decreases with increasing pressure z) Ice is a good thermal insulator
Last Answer : ANSWER: Y -- THE MELTING POINT DECREASES WITH INCREASING PRESSURE
Description : Why the use of thermal Insulator is very important in various industries.
Last Answer : The loss of heat takes place by conduction, convection and radiation. Thermal insulators prevent this loss of heat. They act as barriers or retarders in the passage of heat. Due to this property thermal insulator is very important in various industries.
Description : State any four characteristics of a thermal insulator.
Last Answer : Characteristics of thermal insulator: 1) Its thermal conductivity should be low 2) It should be fire proof 3) It should be cheap 4) It should be colourless 5) Its density should be low 6) It ... odourless 9) It should be light in weight 10)It should be capable of bearing load in working operation.
Description : An iron nail is dipped in the solution of copper sulphate for about 30 minutes. State the change in colour observed. Give reason for the change. -Chemistry-10
Last Answer : When an iron nail is dipped in copper sulphate solution, the displacement reaction takes place. The colour of copper sulphate solution fades due to the formation of light green solution of iron sulphate.
Description : Why does the colour of copper sulphate solution change when an iron nail is dipped in it ? -Chemistry-10
Description : Why does the colour of copper sulphate solution change when an iron nail is dipped in it? Write two observations. -Chemistry
Last Answer : Answer. It is because displacement reaction takes place. Iron displaces copper from copper sulphate solution and forms pale green coloured solution of FeS04 and reddish brown copper metal gets deposited. Fe(s) + CuS04(aq) ——–> FeS04(aq) + Cu(s)
Description : What does the rusting of iron nail? -Do You Know?
Last Answer : answer:
Description : How much does a fifteen inch iron nail weigh?
Last Answer : Need answer
Description : Is a iron nail a solid?
Last Answer : Yes, it's a copper-colored solid
Description : An iron nail is placed into some blue copper sulphate solution. A reaction takes place between the iron and the copper sulphate.?
Last Answer : Hdhdhrh
Description : What does the rusting of iron nail?
Last Answer : Increases its weight
Description : What happens when? a) A cleaned iron plate or iron nail is kept in 10g of copper sulphate solution. b) A pinch of mercuric oxide is kept in a test tube. c)A small crystal of silver nitrate is dissolved in distilled water and a drop of ammonium hydroxide & a pinch of glucose powder are added.
Last Answer : a) A cleaned iron plate or iron nail is kept in 10g of copper sulphate solution. After a few hours a coating of copper is seen on iron nail/plate. It is based on displacement reaction. ... on the inner walls of the test tube. Aldehyde group in glucose reduced silver nitrate to metallic silver.
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.
Description : A substance which reacts with oxygen giving heat is called a combustible substance. Which one of the following is a combustible substance? a) iron nail b)glass c)stone piece d)wood
Last Answer : d)wood
Description : Rohan had learnt that non-metals on beating with hammer are generally broken into pieces. Which of the following is a non-metal? a) iron nail b)aluminium wire c)copper wire d)piece of coal
Last Answer : d)piece of coal
Description : Locate and label the following items on the same map with appropriate symbols. (i) Uran thermal plant (ii) Rourkela Iron Steel plant (iii) Kandla sea port -SST 10th
Last Answer : Political map of India
Description : Which °fine metals has the maximum thermal conductivity? (1) Iron (2) Aluminium (3) Silver (4) Copper
Last Answer : (3) Silver Explanation: Silver has the best thermal conductivity of 429 W/mK at RT (295K). It is followed by copper, gold and aluminium. Metals generally have very good electrical conductivity, that leads to high thermal conductivity.
Description : Zircaloy used as a fuel cladding material in a nuclear reactor (thermal) is an alloy of zirconium (A) Tin, nickel, iron and chromium (B) And graphite
Last Answer : (A) Tin, nickel, iron and chromium
Description : Duriron is (A) Acid resistant, brittle and very hard (B) High silicon iron (C) Prone to breakage due to thermal expansion because of its very high coefficient of thermal expansion (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Which of the following has maximum thermal conductivity? (A) Iron (B) Coal (C) Nitrogen
Last Answer : (A) Iron
Description : Which of the following is an endothermic reaction? (A) Absorption of SO3 in 98% H2SO4 (B) C + H2O = CO + H2 (C) Thermal dissociation of iron pyrites (D) Both (B) and (C)
Last Answer : (D) Both (B) and (C)
Description : Which of the metals has the maximum thermal conductivity? (1) Iron (2) Aluminium (3) Silver (4) Copper
Last Answer : Silver
Description : Why are Metals good conductor of heat than insulator? -General Knowledge
Last Answer : The answer is 'They contain free electrons'
Description : Penny conductor or insulator?
Last Answer : Copper is a conductor, so and pennies are coated in copper.
Description : Is a coin a insulator or a conductor?
Last Answer : A very good conductor.
Description : Is Rubber insulator or conductor?
Last Answer : Rubber is an insulator.
Description : Is wood a conductor or a insulator?
Last Answer : Wood is a conductor, though not a very good one.
Description : Is styrofoam insulator or conductor?
Last Answer : Styrofoam is an insulator.
Description : Is copper insulator or conductor?
Last Answer : Conductor, which is why it's used for wires.
Description : Is plastic insulator or conductor?
Last Answer : Plastic is an insulator.
Description : What is Insulator ?
Last Answer : A substance that has very few or no free elaine particles in its atoms and provides a lot of resistance to electric current is called insulating material.
Description : What is the Insulator ?
Last Answer : Every insulator is the opposite of insulator. Each insulator is associated with an indefinite combination. Given the insulator of a function, the method by which the function is found is called per-insulation.
Last Answer : Substances through which electricity cannot move under any conditions are called insulators. Such as- glass , rubber , ebonite etc.
Last Answer : A substance with more than 4 valence electrons is called insulator.
Last Answer : The one through which electricity cannot flow is called insulator
Last Answer : conductor Money Conductor , guide , electrically conductive , cm _ _ _ Contactor Money Pre Director , Insulator Money Non-conductive Objects.
Description : Is a paper bill a insulator?
Description : In your own words explain the difference between a conductor and an insulator?
Description : Is a DVD a insulator?
Description : Is a brass paper fastener an insulator or conductor?
Last Answer : conductor
Description : Is a paper clip an insulator or an conductor?
Last Answer : Most paperclips are metal- conductor.
Description : Is a piece of fabric a conductor or insulator?
Last Answer : conducter
Description : Is masking tape a conducter or insulator?
Description : Why is a rubber band a insulator?
Last Answer : They are good insulators
Description : Is a glass microscope slide a insulator?
Last Answer : a glass microscope slide is an insulator
Description : Is straw a conductor or insulator?
Last Answer : Dry straw is an insulator.