Which one of the following is used for sun glasses? (1) Pyrex glass (2) Flint glass (3) Crooks glass (4) Crystal glass

Which one of the following is used for sun glasses? (1) Pyrex glass (2) Flint glass (3) Crooks glass (4) Crystal glass
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(3) Crooks glass Explanation: A type of glass that contains cerium and other rare earths and has a high absorption of ultraviolet radiation is used in sunglasses. Sunglasses or sun glasses are a form of protective eyewear designed primarily to prevent bright sunlight and high-energy visible light from damaging or discomforting the eyes. They can sometimes also function as a visual aid, as variously termed spectacles or glasses exist, featuring lenses that are coloured, polarized or darkened.
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Which one of the following is used for sun glasses ? (1) Pyrex glass (2) Flint glass (3) Crooks glass (4) Crystal glass

Description : Which one of the following is used for sun glasses ? (1) Pyrex glass (2) Flint glass (3) Crooks glass (4) Crystal glass

Last Answer : Crooks glass

Which variety of glass is heat resistant? (1) Hard glass (2) Flint glass (3) Pyrex glass (4) Bottle glas

Description : Which variety of glass is heat resistant? (1) Hard glass (2) Flint glass (3) Pyrex glass (4) Bottle glas

Last Answer : (3) Pyrex glass Explanation: Older clear-glass Pyrex manufactured by Corning, Arc International's Pyrex products, and Pyrex laboratory glassware are made of borosilicate glass.

Lens is made up of – (1) Pyrex glass (2) Flint glass (3) Ordinary glass (4) Cobalt glass

Description : Lens is made up of – (1) Pyrex glass (2) Flint glass (3) Ordinary glass (4) Cobalt glass

Last Answer : (2) Flint glass Explanation: Flint glass is optical glass that has relatively high refractive index and low Abbe number (high dispersion). A concave lens of flint glass is commonly ... doublet lens because of their compensating optical properties, which reduces chromatic aberration (colour defects).

Lens is made up of (1) Pyrex glass(2) Flint glass (3) Ordinary glass (4) Cobalt glass

Description : Lens is made up of (1) Pyrex glass(2) Flint glass (3) Ordinary glass (4) Cobalt glass

Last Answer : Flint glass

Which type of glass is used for making glass reinforced plastic? (1) Pyrex glass (2) Flint glass (3) Quartz glass (4) Fibre glass

Description : Which type of glass is used for making glass reinforced plastic? (1) Pyrex glass (2) Flint glass (3) Quartz glass (4) Fibre glass

Last Answer : (4) Fibre glass Explanation: Fiberglass is a lightweight, extremely strong, and robust material. Although strength properties are somewhat lower than carbon fiber and it is less stiff, the material ... also very favorable when compared to metals, and it can be easily formed using molding processes.

Which variety of glass is heat resistant? A. Bottle glass B. Flint glass C. Hard glass D. Pyrex glass (Answer)

Description : Which variety of glass is heat resistant? A. Bottle glass B. Flint glass C. Hard glass D. Pyrex glass (Answer)

Last Answer : D. Pyrex glass (Answer)

Electric bulbs are made of __________ glass. (A) Jena (B) Flint (C) Crookes (D) Pyrex

Description : Electric bulbs are made of __________ glass. (A) Jena (B) Flint (C) Crookes (D) Pyrex

Last Answer : (B) Flint

Superior quality laboratory apparatus is made of the __________ glass having low thermal co-efficient of expansion & high chemical resistance. (A) Flint (B) Soda (C) Pyrex (D) Potash

Description : Superior quality laboratory apparatus is made of the __________ glass having low thermal co-efficient of expansion & high chemical resistance. (A) Flint (B) Soda (C) Pyrex (D) Potash

Last Answer : (C) Pyrex

The type of high refractive index glass used in optical instruments is __________ glass. (A) Pyrex (B) Flint (C) Crookes (D) None of these

Description : The type of high refractive index glass used in optical instruments is __________ glass. (A) Pyrex (B) Flint (C) Crookes (D) None of these

Last Answer : (B) Flint

Basic oxide is absent in __________ glass. (A) Flint (B) Pyrex (C) Quartz (D) All (A), (B) & (C)

Description : Basic oxide is absent in __________ glass. (A) Flint (B) Pyrex (C) Quartz (D) All (A), (B) & (C)

Last Answer : (C) Quartz

Commonly used glass is known as the __________ glass. (A) Flint (B) Hard (C) Pyrex (D) Soda

Description : Commonly used glass is known as the __________ glass. (A) Flint (B) Hard (C) Pyrex (D) Soda

Last Answer : (D) Soda

__________ glass is used for the manufacture of optical glass. (A) Pyrex (B) Soda (C) Flint (D) Crooke's

Description : __________ glass is used for the manufacture of optical glass. (A) Pyrex (B) Soda (C) Flint (D) Crooke's

Last Answer : (C) Flint

Which type of glass is used for making glass reinforced plastic? (1) Pyrex glass (2) Flint glass (3) Quartz glass (4) Fibre glass

Description : Which type of glass is used for making glass reinforced plastic? (1) Pyrex glass (2) Flint glass (3) Quartz glass (4) Fibre glass

Last Answer : Fibre glass

Heat resistant variety of glass is— (1) Pyrex glass (2) Hard glass (3) Flint glass (4) None of these

Description : Heat resistant variety of glass is— (1) Pyrex glass (2) Hard glass (3) Flint glass (4) None of these

Last Answer :  Flint glass

Which one of the following types of glass can cut off ultraviolet rays? (1) Soda glass (2) Pyrex glass (3) Jena glass (4) Crookes glass

Description : Which one of the following types of glass can cut off ultraviolet rays? (1) Soda glass (2) Pyrex glass (3) Jena glass (4) Crookes glass

Last Answer : (4) Crookes glass Explanation: In this glass mainly cerium oxide (CiO2) is present which sharply absorbs the ultraviolet rays from the sunlight so utilized in making lenses of eye glasses.

Is pyrex just tempered glass, or is there anything else in it?

Description : Is pyrex just tempered glass, or is there anything else in it?

Last Answer : The heat resistant quality

Which of the following is responsible for the extra strength of pyrex glass? (1) Potassium Carbonate (2) Lead Oxide (3) Borax (4) Ferric Oxide

Description : Which of the following is responsible for the extra strength of pyrex glass? (1) Potassium Carbonate (2) Lead Oxide (3) Borax (4) Ferric Oxide

Last Answer : (3) Borax Explanation: Older clear-glass Pyrex manufactured by Corning before 1998, Arc International's Pyrex products, and Pyrex laboratory glassware is made of borosilicate glass. According ... glass cookware manufactured by World Kitchen is made of tempered sodalime glass instead of borosilicate.

Which of the following is responsible for extra strength of Pyrex glass?

Description : Which of the following is responsible for extra strength of Pyrex glass?

Last Answer : Borax

The glass known as Pyrex?

Description : The glass known as Pyrex?

Last Answer : Borosilicate glass

Centrifugal pump made of pyrex or glass can't be used to pump (A) Milk and fruit juices (B) Alkaline solutions (C) Dilute H2SO4 at room temperature (D) Brine

Description : Centrifugal pump made of pyrex or glass can't be used to pump (A) Milk and fruit juices (B) Alkaline solutions (C) Dilute H2SO4 at room temperature (D) Brine

Last Answer : (B) Alkaline solutions

Sudden temperature fluctuation does not affect pyrex glass, because of its (A) Low co-efficient of expansion (B) High co-efficient of expansion (C) High melting point (D) Both (B) and (C)

Description : Sudden temperature fluctuation does not affect pyrex glass, because of its (A) Low co-efficient of expansion (B) High co-efficient of expansion (C) High melting point (D) Both (B) and (C)

Last Answer : (A) Low co-efficient of expansion

The main component of Pyrex glass is (A) Zinc (B) Lead (C) Boron (D) Selenium

Description : The main component of Pyrex glass is (A) Zinc (B) Lead (C) Boron (D) Selenium

Last Answer : (B) Lead

__________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant. (A) Pyrex (B) Soda lime (C) Lead (D) High silica

Description : __________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant. (A) Pyrex (B) Soda lime (C) Lead (D) High silica

Last Answer : (A) Pyrex

Which of the following is responsible for the extra strength of pyrex glass ? (1) Potassium Carbonate (2) Lead Oxide (3) Borax (4) Ferric Oxide

Description : Which of the following is responsible for the extra strength of pyrex glass ? (1) Potassium Carbonate (2) Lead Oxide (3) Borax (4) Ferric Oxide

Last Answer : Borax

The refractive indices for lights of violet, yellow and red colours for a flint glass prism are respectively 1.632, 1.620 and 1.613. Find the dispersi

Description : The refractive indices for lights of violet, yellow and red colours for a flint glass prism are respectively 1.632, 1.620 and 1.613. Find the dispersi

Last Answer : The refractive indices for lights of violet, yellow and red colours for a flint glass prism are ... Find the dispersive power of the prism material.

Why addition of flint and quartz to molten glass does not shrink or get transformed?

Description : Why addition of flint and quartz to molten glass does not shrink or get transformed?

Last Answer : Flint and quartz are forms of silica, they do not absorb water. As water is not absorbed, they do not get transformed on heating and do not shrink.

Major component of flint glass is (A) Lead oxide (B) Silica (C) Alumina (D) Soda

Description : Major component of flint glass is (A) Lead oxide (B) Silica (C) Alumina (D) Soda

Last Answer : (A) Lead oxide

Flint glass (A) Has slightly the greater refracting power than crown glass (B) Has roughly double refracting power than that of crown (C) And crown glass proportions yield the required focal length and neutralise the dispersion produced by the convex lens at the emergence from the concave (D) All the above

Description : Flint glass (A) Has slightly the greater refracting power than crown glass (B) Has roughly double refracting power than that of crown (C) And crown glass proportions yield the required focal length ... dispersion produced by the convex lens at the emergence from the concave (D) All the above

Last Answer : (D) All the above

How are crystal glasses made?

Description : How are crystal glasses made?

Last Answer : Making crystal glasses various from country to country. Lead is often added to liquid glass to allow it to be cut easier. A great video explaining the whole process can be found here http://www.YouTube.com/watch?v=6c_8ekySU3c.

where can i find cheap crystal **** glasses?

Description : where can i find cheap crystal wine glasses?

Last Answer : Cheap crystal wine glasses can be found at overstock.com. The reason they are so cheap is because they have an excess amount of them. Its your simple supply and demand.

where can i buy crystal **** glasses?

Description : where can i buy crystal wine glasses?

Last Answer : There is a large array of quality of crystal glasses, from those made with glass as well as the finer quality found in lead crystal. Many middle and upper range department stores offer crystal in ... are also specialty stores which offer a larger variety of crystal, as well as some jewelry stores.

Where can I buy crystal **** glasses for my wedding ?

Description : Where can I buy crystal wine glasses for my wedding ?

Last Answer : At http://myweddingreceptionideas.com/personalized_wine_glasses.asp, you can purchase personalized wine glasses for your wedding as well as find other wedding favors to create the perfect day.

An explorer is riding his camel in the desert. Up ahead he sees what appears to be a pool of water. He can tell if it is a real pool of water or a mirage by putting on his polarized sun glasses because: w) the mirage is polarized and reflections from the water are not x) reflections from water are polarized while the mirage is not y) neither are polarized so one will not be able to discern a difference z) both are polarized so one will not be able to discern a difference

Description : An explorer is riding his camel in the desert. Up ahead he sees what appears to be a pool of water. He can tell if it is a real pool of water or a mirage by putting on his polarized sun ... not be able to discern a difference z) both are polarized so one will not be able to discern a difference 

Last Answer : ANSWER: X -- REFLECTIONS FROM WATER ARE POLARIZED WHILE THE MIRAGE S NOT

Do crooks today need better nicknames?

Description : Do crooks today need better nicknames?

Last Answer : ”What happened to criminal creativity?” The “talent” all moved to politics and banking.

What happened when the crooks fell in the ocean? -Riddles

Description : What happened when the crooks fell in the ocean? -Riddles

Last Answer : They started a crime wave.

What is the origin of the surname Crooks?

Description : What is the origin of the surname Crooks?

Last Answer : First used by the Viking settlers of ancient Scotland, thesurname of Crooks was bestowed upon those residing in Crook, thename of several places in Scotland and England.

Who visits Lennie candy and crooks?

Description : Who visits Lennie candy and crooks?

Last Answer : Curley's wife

What does Lennie tell crooks he probably shouldn't have?

Description : What does Lennie tell crooks he probably shouldn't have?

Last Answer : Feel Free to Answer

Why does Crooks sleep in the barn instead of the bunkhouse?

Description : Why does Crooks sleep in the barn instead of the bunkhouse?

Last Answer : What is the answer ?

What is crooks personality Of mice and men?

Description : What is crooks personality Of mice and men?

Last Answer : he is intelligent because he reads books.and also he works with the horses

Who visits Lennie candy and crooks?

Description : Who visits Lennie candy and crooks?

Last Answer : Curley's wife

What does crooks symbolize in Of Mice and Men?

Description : What does crooks symbolize in Of Mice and Men?

Last Answer : he symbolises the discrimination that was happening at the time that the novel was set

If the post office people had been termed as a ―bunch of crooks‖ by Lencho, what could be the other word that could replace ―Crooks‖? (a) Peasants (b) Hooligans (c) Pests (d) Intruders

Description : If the post office people had been termed as a ―bunch of crooks‖ by Lencho, what could be the other word that could replace ―Crooks‖? (a) Peasants (b) Hooligans (c) Pests (d) Intruders

Last Answer : (b) Hooligans

How do crooks and con artists find their victims online?

Description : How do crooks and con artists find their victims online?

Last Answer : Crooks and scammers have many ways to find their potential victims, and they're constantly coming up with new ones. Beware of: 4 Phishing-an attempt to hook you into revealing your personal ... meet online contacts in person may be at risk; or the sites may compromise your personal information.

LOOKING FOR REPLACMENT SHADE FOR NATHAN LAGIN CRYSTAL OR GLASS LAMP 10X13 PLEATED?

Description : LOOKING FOR REPLACMENT SHADE FOR NATHAN LAGIN CRYSTAL OR GLASS LAMP 10X13 PLEATED?

Last Answer : Pier One Imports has a large selection of all size lamp shades that may be usewd on any lamp.They have every color and size imaginable.I would check thier site first.

Will crystal break easier than glass?

Description : Will crystal break easier than glass?

Last Answer : The addition of up to 30% lead oxide, ( though most manufacturers are reducing it to 24%, the legal minimum to be called lead crystal ), gives crystal glass a high index of refraction which ... difference between a crystal and glass, is that a crystal has a homogenous solid formed by a repeating,

Glass is - (1) Super cooled liquid (2) Crystalline solid (3) Liquid crystal (4) None of these

Description : Glass is - (1) Super cooled liquid (2) Crystalline solid (3) Liquid crystal (4) None of these

Last Answer : (1) Super cooled liquid Explanation: Glass is sometimes called a Super cooled liquid because it does not form a crystalline structure, but instead forms an amorphous solid that allows molecules in the material to continue to move.

Give reasons : (a) Window glass of old building look milky. b) Window glass of old building is thick at bottom. (c) CaCl2 will introduce Schottky defect if added to AgCl crystal.

Description : Give reasons : (a) Window glass of old building look milky. b) Window glass of old building is thick at bottom. (c) CaCl2  will introduce Schottky defect if added to AgCl crystal.

Last Answer : (a) Due to annealing over a number of years glass acquires some crystalline character. (b) Glass is not a true solid. But a super-cooled liquid of high viscosity. It has the property to ... to maintain electrical neutrality. Thus a hole is created and lattice site for every Ca2+ ion introduced. 

Describe the crystal structure of glass using Bragg’s law.

Description : Describe the crystal structure of glass using Bragg’s law.

Last Answer : Crystal structure of glass by Bragg's law: The general relationship between the wavelength of the incident x ray, angle of incidence and spacing between the crystal planes of atoms is known as Braggg's law, expressed mathematically ... to occur: 2d sin θ = nλ This is known as Bragg's law.  

how to turn down temperature in true glass chiller. Glasses are frozen?

Description : how to turn down temperature in true glass chiller. Glasses are frozen?

Last Answer : Depending the type of glass chiller there may be a temperature nob or a setting located inside the chiller or on the bottom to turn down the temp.