Why are metallized films a cheaper alternative to foil?

Q: What is the difference between Lime scrubbing and limestone scrubbing?

A: The lime or limestone scrubbing process is the most common method for the reduction of the SO2…

Q: Justify that Glass is an insulating material.

A: Conducting material : The materials which conduct electricity when electricity is passed through it,…

Q: Fill in the blanks: Silica ____ has a larger surface area than particle type ___

A:

Q: Chemical equation for main copper test and bismuth test?

A: Chemical equation of Cu Test 2Cu + K4FeCN6 ----> Cu2Fe(CN)6 + 4K red brown ppt fomed

Q: What property of steel is being enhanced in adding silicon?

A: What property of steel is being enhanced in adding silicon?

Q: You wish to fabricate sunglasses that consist of a plastic covered with a semi transparent metal…

A: Physical vapor deposition (PVD) is the best method for depositing the thin metal films on other…

Q: What are soft and hard ferrites? (Inorganic Chemistry)

A: Soft ferrites =  Strong ferrites have low coercivity, which means that it can demagnetize easily.…

Q: An insulator such as wood would have a high electric resistance. OTrue O False

A: The measure of the opposition of current flow through a substance is known as the resistance of that…

Q: What is the most economical fabrication technique? forging casting 3D-printing powder metallurgy

A: A multiple choice question about fabrication techniques, which is to be accomplished.

Q: Moulds for blow moulding can be made using aluminium whereas moulds for injection moulding are…

A: injection molds should have a high accuracy match between shape parts so material stream is…

Q: how many iron atoms are in a mold of this alloy

A:

Q: Higher coefficient of thermal expansion: High purity fused silica _ Pyrex glass (borosilicate)

A: Coefficient of Thermal Expansion of high purity fused silica = 0.64×10-⁶/℃

Q: Name some solids that are effective as adsorbents.

A: Adsorption is a surface phenomenon. The term adsorption is defined as the process in which the…

Q: the process that gives time to the crystal to grow with the accompanying decrease in surface area…

A: The process in which a precipitate is heated (without stirring) for an hour or more in the solution…

Q: What is an advantage ofusing shielded metal arc welding?

A: Given: Shielded metal arc welding  To find: Advantages  Solution: SMAW is the short form used for…

Q: Why are metals good conductors of heat than ceramics?

A: Metals are substance which are present in the s and d block of the periodic table.

Q: Describe how Zn is used to protect the surface of steel products. What is the name of this process?

A: Zinc metal has a number of characteristics that make it a well-suited corrosion protective coating…

Q: actually removing:  a. all of the choices here are acceptable b. the impurities c. the oxides d.…

A: Magnesium ribbons contain a layer of magnesium oxide.

Q: Why do we prefer to coat metals with ceramics? What kind of additional property would a ceramic…

A: Introduction: Metal coatings are coatings that are applied to metal in order to protect the metal…

Q: What is the procedure for heating the metal sample to an exact but measured temperature?

A:

Q: How can evacuated the hot gases formed by reactions of the molten metal in die casting?

A: When metal parts of certain geometry are to be produced at a faster rate, die casting process is…

Q: From which category of materials would you select a material best suited for building a vessel to…

A: Iron is used to make various alloys, such as stainless steel which is manufactured by mixing iron…

Q: Estimate the number of atoms that would have to be removed from a silicon substrate to produce a…

A: Mass per unit volume is known as density of the substance.

Q: The following is a backscattered electron image of a sample of nickel alloy particles that were…

A: SEM is scanning electron microscopy. It is an analytical technique which involves scanning of a…

Q: What minerals used in glossy paper?

A: Answer - Kaolin  Minerals like clay, mica, talc and baryte are mixed with wood pulp to make paper.…

Q: They are made of matrix and reinforcing material. O Minerals O Composites Compounds O Alloys

A: Composite material produced from two or more constituent materials. minerals are made of chemical…

Q: Which is superior in strength Metal or Plastic?

A: Metal is always super to plastic in case of tensile strength.  The reason for this strength in metal…

Q: Which method is employed for extracting copper from low grade ores and scraps?

A: reduction of ores -by three step-Reaction of the ore (over quite a prolog and on a huge scale) with…

Q: Why are impurities added to silicon dioxide in the glass making process? To increase mechanical…

A: Impurities like boric oxide , sodium oxide and aluminium are used while making the glass

Q: List the properties of copper that make it appropriate for electric wires?

A: Copper is a metal which is commonly used for making electric wires. This is because of the following…

Q: What is the composition of ‘Copper matte’?

A: Copper matte is a mixture of copper sulphide and iron sulphide.

Q: Why copper is used to make hot water tanks and not steel?

A: This is because steel contains iron which reacts with steam and form iron oxide.

Q: Does a penny and calcite have the same hardness ?

A: Calcite and penny both have a hardness of 3.

Q: Write any four applications of Aluminum Alloys

A: Alloy :  Homogeneous mixture of a metal with other metals is called as an alloy. Some common…

Q: A water cover on top of mining residues will limit the oxidation of iron sulphides by limiting the…

A: Ans) True

Q: Polycarbonate is sometimes used for protective helmets, such as motorcycle helmets. However, it is…

A: Polycarbonates are high-performance tough, transparent, amorphous thermoplastic polymer that…

Q: The resistance of a conductor varies inversely as Resistivity .a temperature b O length .c O…

A: Resistance is defined as the opposition offered to the flow of current through the conductor.

Q: packed columns the stationary phase is: (a) packed in the column (b) coated inside the column (c) a…

A:

Q: the difference between weathering erosion deposition

A: Given : To give the difference between weathering, erosion and deposition.