Description : One carat of diamond is equal to (1) 100 mg (2) 150 mg (3) 200 mg (4) 250 mg
Last Answer : 200 mg
Description : One carat of Diamond is equal to–
Description : One carat of Diamond is equal to
Description : If diamonds are valued by the 4 C's (cut, carat, clarity, color), what is the value of a diamond that is used in jewelry in an uncut state?
Last Answer : Before they are cut (and even after to be honest) the value is based on the amount of chemical impurities in the diamond. The more pure the diamond the higher the value. A type IIa (the ... ) accounts for less than 2% of all diamonds. They are also considerably harder than other types of diamond.
Description : What is a good carat size for a diamond wedding ring?
Last Answer : Budget is always a deciding factor. A ring of at least .33 carat is preferred. If you have to choose, choose size over any minor imperfections.
Description : What kind of backing does 1/2 Carat Diamond Stud 14K Gold Earrings have?
Last Answer : The 1/2 Carat Diamond Stud 14K Gold Earrings have standard screw backings. This will keep them secure and reduce the risk of losing them.
Description : How much should a 1/3 carat good quality diamond engagement ring cost?
Last Answer : About $800
Description : `C^(14)` has a half`-` life of 5760 years. `100mg` of the sample containing `.^(14)C` is reduced to `25mg` in a)11520years b)2880years c)1440years d)1
Last Answer : `C^(14)` has a half`-` life of 5760 years. `100mg` of the sample containing `.^(14)C` is ... 11520 years B. 2880 years C. 1440 years D. 17280 years
Description : What is 100mg in 1000ml?
Last Answer : 1 mg per 10 ml
Description : Concentration range (given as weight of gas per unit chamber volume) for ethylene oxide is A 15–100mg/L B 800–1200mg/L C 120–180mg/L D 1000–1200mg/L
Last Answer : B 800–1200mg/L
Description : 12 years old child presents with symptoms of widespread gingivitis with bleeding and general malaise for several weeks. How would you manage this patient? M07 ********* A. Prescribe ... mouth wash. C. Give a prophylaxis with ultra sonic scaling D. Refer for haematological screening
Last Answer : D. Refer for haematological screening
Description : How many grams is equal to 1 carat ?
Last Answer : 1 carat equals 2 grams.
Description : The ratio of pure gold in 18 carat gold is - (1) 100% (2) 80% (3) 75% (4) 60%
Last Answer : (3) 75% Explanation: The gold content of alloys is measured in carats (k). Pure gold is designated as 24k where the ratio of pure gold is supposed to be 100 per cent. So 18 k gold will have pure gold ratio of 75 per cent.
Description : The ratio of pure gold in 18 carat gold is (1) 60% (2) 75% (3) 80% (4) 90%
Last Answer : (2) 75% Explanation: There are various grades of gold purity, determined by the ratio of their alloy composition and rated by a karat system. Typical karat purities range from 10 karats to ... balance between gold purity and strength. Brilliance offers a variety of exquisite 18 karat gold jewelry.
Description : How many milligrams are in one metric carat?
Last Answer : ANSWER: 200 MILLIGRAMS
Description : The ratio of pure gold in 18 carat gold is : (1) 60% (2) 75% (3) 80% (4) 90%
Last Answer : 75%
Description : What are the main components of 21 carat gold ?
Last Answer : Gold and copper.
Description : What are the basic ingredients in 21 carat gold ?
Last Answer : There are two main elements in twenty one carat.
Description : What is the use of 21 carat gold ?
Last Answer : Used as ornament.
Description : What is Carat ?
Last Answer : Single carat of precious stones and metals.
Description : What is the best carat of gold you can use to make jewelry?
Last Answer : It actually depends on the type of jewelry. The higher the carat, the purer and softer the metal, so a high carat like 22 or 24 is actually too soft for a ring, for instance. In rings, the carat should be no higher than 18K.
Description : Does ct t.w. mean the carat total weight of all the diamonds on the piece of jewelry?
Last Answer : Yes. It stands for Minimum carat total weight
Description : The ratio of pure gold in 18 carat gold is
Description : What do you understand by 22 carat gold?
Last Answer : 22 parts gold; 2 parts copper
Description : 916 goldis.....carat?
Last Answer : 22 carat
Description : Which carat of gold is used to make orna- ments?
Description : Pure goldis ....carat?
Last Answer : 24 carat
Description : The ratio of pure gold in 18 carat gold is --------? A. 0.5 B. 0.9 C. 0.8.5 D. 0.75 (Answer)
Last Answer : D. 0.75 (Answer)
Description : Indian post gold coin denomination is a) 0.2 g, 2g, 5 g and 8 g of 24 carat (99.99% pure) a) 1 g, 2g, 6 g and 10 g of 24 carat (99.99% pure) a) 0.5 g, 1g, 5 g and 8 g of 24 carat (99.99% pure) a) None of these
Last Answer : a) 0.5 g, 1g, 5 g and 8 g of 24 carat (99.99% pure)
Description : The purity of gold is expressed in terms of ____ ___. a)carat b)ounce c)pound d)none
Last Answer : a)carat
Description : Carbon occurs in nature in the purest form as - (1) Diamond (2) Graphite (3) Carbon black (4) Coal
Last Answer : (1) Diamond Explanation: There are three forms of pure carbon: Graphite, Coal and Diamond. All three are made up of elemental carbon, caol is the least pure when found in nature. Diamond is the purest form of Carbon.
Description : Which of the following is used as lubricant? (1) Graphite (2) Silica (3) Diamond (4) Iron Oxide
Last Answer : (1) Graphite Explanation: Graphite is used as a lubricant due to its slippery nature. Due to its loosely intact carbon atoms or free electrons, they can move around easily from one place to another, making graphite a good conductor of electricity.
Description : Diamond is the form of carbon that is - (1) Crystalline (2) Amorphous (3) Chemical (4) Alkaline
Last Answer : (1) Crystalline Explanation: Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic.
Description : As which one of the following, does carbon occur in its purest form in nature? (1) Carbon black (2) Graphite (3) Diamond (4) Coal
Last Answer : (3) Diamond Explanation: The purest form of carbon is neither diamond nor graphene or graphite . It is 'Fullerene' , the purest form of carbon.
Description : Which of the following is the purest form of Carbon? (1) Charcoal (2) Granite (3) Diamond (4) Graphite
Last Answer : (3) Diamond Explanation: Because the carbon atoms in diamond are more tightly bound than in graphite (as diamond is the hardest material known), it is more difficult for impurities to get into the diamond lattice and as a result diamonds are often more pure than graphite.
Description : _____is not an allotrope of carbon. (1) Buckminsterfullerene (2) Carbon Doxide (3) Diamond (4) Graphite
Last Answer : (2) Carbon Doxide Explanation: Carbon is capable of forming many allotropes due to its valency. Well-known forms of carbon include diamond and graphite. Other allotropes in clude: include buckyballs (fullerenes), amorphous carbon, glassy carbon, carbon nanofoam, nanotubes,and others.
Description : Hardest allotrope of carbon is - (1) diamond (2) graphite (3) coke (4) lamp black
Last Answer : (1) diamond Explanation: Diamond is one well known allotrope of carbon. The hardness and high dispersion of light of diamond make it useful for both industrial applications and jewellery. Diamond is ... mineral. This makes it an excellent abrasive and makes it hold polish and luster extremely well.
Description : Hardest material is - (1) Tungsten (2) Diamond (3) Steel (4) Graphite
Last Answer : (2) Diamond Explanation: Diamondsare commonly known as the hardest substance on earth, used in drill bits for cutting applications.
Description : The hardest substance available in earth is – (1) Platinum (2) Silicon (3) Diamond (4) Gold
Last Answer : (3) Diamond Explanation: Diamond is the hardest naturally occurring substance found on Earth. But it is not the hardest substance.
Description : Diamond is harder than graphite because of – (1) difference in layers of atoms (2) tetrahedral structure of diamond (3) difference of crystalline structures (4) None of these
Last Answer : (1) difference in layers of atoms Explanation: Diamond is harder than graphite because diamond has a more complex structure. Diamond's structure is like many pentagons connected together, each pentagon ... together in some way. Graphite's structure is very loose, with its bonds forming layers.
Description : Give reason Why Diamond is used as abrasive?
Last Answer : Ans. because it is the hardest substance . All the four valencies are filled.
Description : Explain the difference in properties of diamond and graphite on the basis of their Structure?
Last Answer : Ans.1. Diamond has three dimensional network whereas graphite has two successive layers. 2. Diamond has high density while graphite has low. 3. Diamond has sp3 and graphite has sp2 hybridised carbon atom.
Description : Although Diamond is Covalent, yet it has high melting point. Why?
Last Answer : Ans. All the four valencies are satisfied by carbon.
Description : Why Diamond shines?
Last Answer : Ans. Diamond-hard and brilliant glow due to highest refractive index.
Description : Out of carbon(diamond)and carbon (graphite) whose enthalpy of formation is taken as zero?
Last Answer : Ans. Enthalpy of formation of carbon in the form of graphite is taken as zero because it is a more commonly found in stable form of carbon.
Description : Graphite is used as anode and not diamond. Assign reason.
Last Answer : Ans. In graphite there are free electrons which helps in electricalconductivity.
Description : Give reasons : (a) Diamond and rhombic Sulphur are covalent solids, but the latter has lower melting points. (b) Among NaCl and CsCl, CsCl is quite stable.
Last Answer : (a) Due to weak Vander Waal’s Force in Sulphur molecule. (b) CsCl coordination number is 8. It is surrounded by 8 anion tightly.
Description : Give Reason : The energy required to vaporize one mol of copper is smaller than that of energy required to vaporize 1 mol of diamond.
Last Answer : Copper is a metallic solid having metallic bonds while diamond is a covalent solid having covalent bonds. Metallic bonds are weaker than covalent bonds and thus less amount of energy is required to break metallic bonds than covalent bonds.
Description : What is the coordination number of carbon, in diamond ?
Last Answer : 4 and its unit cell has 8 atoms. [The space lattice of diamond is FCC]