Which of the toxic heavy metals is found in modern tannery industries ? (1) Nickel (2) Zinc (3) Chromium(4) Lead

Which of the toxic heavy metals is found in modern tannery industries ? (1) Nickel (2) Zinc (3) Chromium(4) Lead
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Chromium
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Which of the toxic heavy metals is found in modern tannery industries? -Do You Know?

Description : Which of the toxic heavy metals is found in modern tannery industries? -Do You Know?

Last Answer : answer:

Which of the toxic heavy metals is found in modern tannery industries?

Description : Which of the toxic heavy metals is found in modern tannery industries?

Last Answer : Chromium

The metals commonly used for electroplating are – (1) Gold, Sodium and Chromium (2) Chromium, Copper and Nickel (3) Nickel, Lead and Chromium (4) Gold, Sodium and Potassium

Description : The metals commonly used for electroplating are – (1) Gold, Sodium and Chromium (2) Chromium, Copper and Nickel (3) Nickel, Lead and Chromium (4) Gold, Sodium and Potassium

Last Answer : (2) Chromium, Copper and Nickel Explanation: The process of electroplating takes place as metals in ionic form move from a positive to negative electrode. An electric current passing through the ... ability of metal objects. Plating protects by one of two ways, either sacrificially or mechanically.

The metals commonly used for electroplating are (1) Gold, Sodium and Chromium (2) Chromium, Copper and Nickel (3) Nickel, Lead and Chromium (4) Gold, Sodium and Potassium

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Last Answer : Chromium, Copper and Nickel

Which of the following metals cannot be hot worked at room temperature? (A) Zinc (B) Nickel (C) Lead (D) Tin

Description : Which of the following metals cannot be hot worked at room temperature? (A) Zinc (B) Nickel (C) Lead (D) Tin

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Galvanised iron is made by coating iron with – (1) Zinc (2) Nickel (3) Chromium (4) Sulphur

Description : Galvanised iron is made by coating iron with – (1) Zinc (2) Nickel (3) Chromium (4) Sulphur

Last Answer : (1) Zinc Explanation: Galvanization) is the process of applying a protective zinc coating to steel or iron, in order to prevent rusting, Although galvanization can be done with electrochemical and electro- ... is hot-dip galvanization, in which steel parts are submerged in a bath of molten zinc.

Galvanised iron is made by coating iron with (1) Zinc (2) Nickel (3) Chromium (4) Sulphur

Description : Galvanised iron is made by coating iron with (1) Zinc (2) Nickel (3) Chromium (4) Sulphur

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The toxicity of which of the following heavy metals leads to liver cirrbosis? (1) Copper (2) Lead (3) Mercury (4) Zinc

Description : The toxicity of which of the following heavy metals leads to liver cirrbosis? (1) Copper (2) Lead (3) Mercury (4) Zinc

Last Answer : (1) Copper Explanation: Cirrhosis is a consequence of chronic liver disease characterized by replacement of liver tissue by fibrosis, scar tissue and regenerative nodules (lumps that occur as a result ... cause cirrhosis include Wilson's disease (which causes an accumulation of copper in the body).

The toxicity of which of the following heavy metals leads to Liver cirrhosis? A. Copper (Answer) B. Lead C. Mercury D. Zinc

Description : The toxicity of which of the following heavy metals leads to Liver cirrhosis? A. Copper (Answer) B. Lead C. Mercury D. Zinc

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The toxicity of which of the following heavy metals leads to liver cirrbosis? (1) Copper (2) Lead (3) Mercury (4) Zinc

Description : The toxicity of which of the following heavy metals leads to liver cirrbosis? (1) Copper (2) Lead (3) Mercury (4) Zinc

Last Answer : Copper

Which of the following commercial metals is most abundantly found in India? (A) Copper (B) Aluminium (C) Nickel (D) Zinc

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Constituents of stellite are (A) Zinc, copper and nickel (B) Cobalt, chromium and tungsten (C) Zinc, aluminium and nickel (D) Nickel, cobalt and vanadium

Description : Constituents of stellite are (A) Zinc, copper and nickel (B) Cobalt, chromium and tungsten (C) Zinc, aluminium and nickel (D) Nickel, cobalt and vanadium

Last Answer : (B) Cobalt, chromium and tungsten

Inconel is an alloy of (A) Tin, zinc and nicke(B) Iron, nickel and chromium(C) Copper and nickel(D) Copper and tin

Description : Inconel is an alloy of (A) Tin, zinc and nicke (B) Iron, nickel and chromium (C) Copper and nickel (D) Copper and tin

Last Answer : (B) Iron, nickel and chromium

Constituents of stellite are (A) Zinc, copper & nickel (B) Cobalt, chromium & tungsten (C) Zinc, aluminium & nickel (D) Nickel, cobalt & vanadium

Description : Constituents of stellite are (A) Zinc, copper & nickel (B) Cobalt, chromium & tungsten (C) Zinc, aluminium & nickel (D) Nickel, cobalt & vanadium

Last Answer : (B) Cobalt, chromium & tungsten

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Description : Which of the following metals is used for the manufacture of heating elements provided in electric iron? (1) Nickel (2) Chromium (3) Nichrome (4) Tungsten

Last Answer : (3) Nichrome Explanation: Nichrome is the most common domestic heating element and is found in many household products. Commonly, items such as toasters, hair dryers and heaters use nichrome coils to ... percent nickel and 20 percent chromium, and its high melting point of 1,400 degrees Celsius.

Which of the following metals is used for the manufacture of heating elements provided in electric iron ? (1) Nickel (2) Chromium (3) Nichrome (4) Tungsten

Description : Which of the following metals is used for the manufacture of heating elements provided in electric iron ? (1) Nickel (2) Chromium (3) Nichrome (4) Tungsten

Last Answer : Nichrome

The metal, used to galvanise iron to protect it from rusting is (1) Zinc (2) Chromium (3) Lead (4) Antimony

Description : The metal, used to galvanise iron to protect it from rusting is (1) Zinc (2) Chromium (3) Lead (4) Antimony

Last Answer : Zinc

Which one of the following metals pollutes the air of a city having large number of automobiles? (1) Cadmium (2) Chromium (3) Lead (4) Copper

Description : Which one of the following metals pollutes the air of a city having large number of automobiles? (1) Cadmium (2) Chromium (3) Lead (4) Copper

Last Answer : (3) Lead Explanation: The history of car pollution has been one of air and water contamination followed by regulated improvement. Cars and trucks cause a lot of air the pollution in the world ... . But since leaded gasoline has been phased out, lead emissions have decreased by about 98 percent.

Which one of the following metals pollutes the air of a city having large number of automobiles? (1) Cadmium (2) Chromium (3) Lead (4) Copper

Description : Which one of the following metals pollutes the air of a city having large number of automobiles? (1) Cadmium (2) Chromium (3) Lead (4) Copper

Last Answer : Lead

A fuse wire is made of: (1) an alloy of tin and copper (2) an alloy of tin and lead (3) an alloy of tin and aluminium (4) an alloy of nickel and chromium

Description : A fuse wire is made of: (1) an alloy of tin and copper (2) an alloy of tin and lead (3) an alloy of tin and aluminium (4) an alloy of nickel and chromium

Last Answer : (2) an alloy of tin and lead Explanation: Electric fuse wire is an alloy made of tin (63 % lead 37 %. The cross sectional area determines the melting point at a certain current. Alloys (e.g. ... resulting combination of good conductivity (due to the tin) with a low melting point due to the lead).

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Description : Corrosion resistance of steel is increased by the addition of (A) Phosphorous and tungsten (B) Nickel and chromium (C) Lead and vanadium (D) Molybdenum and tungsten

Last Answer : (B) Nickel and chromium

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Description : Invar used in thermocouples is an alloy of nickel and (A) Iron (B) Copper (C) Chromium (D) Lead

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A fuse wire is made of: (1) an alloy of tin and copper (2) an alloy of tin and lead (3) an alloy of tin and aluminium (4) an alloy of nickel and chromium

Description : A fuse wire is made of: (1) an alloy of tin and copper (2) an alloy of tin and lead (3) an alloy of tin and aluminium (4) an alloy of nickel and chromium

Last Answer : an alloy of tin and lead

Whic of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc.? (1) Iron and cadmium (2) Nickel and cadmium (3) Lead peroxide and lead (4) Zinc and carbon

Description : Whic of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc.? (1) Iron and cadmium (2) Nickel and cadmium (3) Lead peroxide and lead (4) Zinc and carbon

Last Answer : (2) Nickel and cadmium Explanation: A rechargeable battery, storage battery, or accumulator is a type of electrical battery. It comprises one or more electrochemical cells, and is a ... sizes, ranging from button cells to megawatt systems connected to stabilize an electrical distribution network.

Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? (1) Iron and cadmium (2) Nickel and cadmium (3) Lead peroxide and lead (4) Zinc and carbon

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Last Answer : Nickel and cadmium

Bronze medal is made up of metals ? A. copper,nickel B. copper, tin (Answer) C. copper, silver D. copper, zinc

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Presence of __________ in water stream are deleterious to aquatic life. (A) Soluble and toxic organics (B) Suspended solids (C) Heavy metals and cyanides(D) All (A), (B) & (C)

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Galvanised Iron sheets have a coating of (1) Tin (2) Lead (3) Zinc (4) Chromium

Description : Galvanised Iron sheets have a coating of (1) Tin (2) Lead (3) Zinc (4) Chromium

Last Answer : (3) Zinc

Which one of the following metals pollutes the air of a city having large number of automobiles? A. Cadmium B. Chromium C. Lead D. Copper

Description : Which one of the following metals pollutes the air of a city having large number of automobiles? A. Cadmium B. Chromium C. Lead D. Copper

Last Answer : ANSWER: C

Which of the following metals contribute to to biomagnifications problem in the ecosystem? (1) Mercury (2) Chromium (3) (4) Copper (4) (4) Lead

Description : Which of the following metals contribute to to biomagnifications problem in the ecosystem? (1) Mercury (2) Chromium (3) (4) Copper (4) (4) Lead

Last Answer : (1) Mercury Explanation: Mercury causes biomagnification problem in the ecosystem.

Which of the following metals contribute to to biomagnification problem in the ecosystem ? (1) Mercury (2) Chromium (4) Copper (4) Lead

Description : Which of the following metals contribute to to biomagnification problem in the ecosystem ? (1) Mercury (2) Chromium (4) Copper (4) Lead

Last Answer : Mercury

Which of the following metals occurs in free state? (1) Copper (2) Iron (3) Zinc (4) Lead

Description : Which of the following metals occurs in free state? (1) Copper (2) Iron (3) Zinc (4) Lead

Last Answer : (4) Lead Explanation: A native metal is any metal that is found in its metallic form, either pure or as an alloy, in nature. Metals that can be found as native deposits singly and/ or in ... group, and the platinum group. The gold group consists of gold, copper, lead, aluminium, mercury, and silver

Which of the following metals form an amalgam with other metals? (1) Lead (2) Tin (3) Zinc (4) Mercury

Description : Which of the following metals form an amalgam with other metals? (1) Lead (2) Tin (3) Zinc (4) Mercury

Last Answer : (4) Mercury Explanation: An amalgam is a substance formed by the reaction of mercury with another metal. Almost all metals can form amalgams with mercury, notable exception being iron. Silver- ... "excellent and versatile restorative material" and is used in dentistry for a number of reasons.

Which of the following metals occurs in free state ? (1) Copper (2) Iron (3) Zinc (4) Lead

Description : Which of the following metals occurs in free state ? (1) Copper (2) Iron (3) Zinc (4) Lead

Last Answer : Lead

Which of the following metals form an amalgam with other metals ? (1) Lead (2) Tin (3) Zinc (4) Mercury

Description : Which of the following metals form an amalgam with other metals ? (1) Lead (2) Tin (3) Zinc (4) Mercury

Last Answer : Mercury

Which one of the following metals is used to galvanise iron ? (1) Copper (2) Lead (3) Zinc (4) Mercury

Description : Which one of the following metals is used to galvanise iron ? (1) Copper (2) Lead (3) Zinc (4) Mercury

Last Answer : Zinc

Chocolates can be bad for health because of a high content of – (1) cobalt (2) nickel (3) zinc (4) lead

Description : Chocolates can be bad for health because of a high content of – (1) cobalt (2) nickel (3) zinc (4) lead

Last Answer : (4) lead Explanation: Chocolate absorbs lead from the environment during production. Recently there has been concern of mild lead poisoning for some types of chocolate.

The electrolyte used in a nickel-cadmium battery is distilled water and ______________. A. diluted sulfuric acid B. potassium hydroxide C. lead sulfate D. zinc oxide

Description : The electrolyte used in a nickel-cadmium battery is distilled water and ______________. A. diluted sulfuric acid B. potassium hydroxide C. lead sulfate D. zinc oxide

Last Answer : Answer: B

Bronze is an alloy of copper and (A) Lead (B) Tin (C) Nickel (D) Zinc

Description : Bronze is an alloy of copper and (A) Lead (B) Tin (C) Nickel (D) Zinc

Last Answer : (B) Tin

German silver is an alloy of copper, nickel and (A) Zinc (B) Silver (C) Tin (D) LeadGerman silver is an alloy of copper, nickel and(A) Zinc(B) Silver(C) Tin(D) Lead

Description : German silver is an alloy of copper, nickel and (A) Zinc (B) Silver (C) Tin (D) Lead

Last Answer : (A) Zinc

Which metallic element is liquid at room temperature? A. Zinc B. Nickel C. Lead D. Mercury (Answer)

Description : Which metallic element is liquid at room temperature? A. Zinc B. Nickel C. Lead D. Mercury (Answer)

Last Answer : D. Mercury (Answer)

German silver is an alloy of (A) Zinc, lead and nickel (B) Silver, gold and lead (C) Copper, nickel and zinc (D) Copper, brass and zinc

Description : German silver is an alloy of (A) Zinc, lead and nickel (B) Silver, gold and lead (C) Copper, nickel and zinc (D) Copper, brass and zinc

Last Answer : Answer: Option C

Brass is an alloy of (A) Copper and zinc (B) Zinc and lead (C) Tin and silver (D) Zinc and nickel

Description : Brass is an alloy of (A) Copper and zinc (B) Zinc and lead (C) Tin and silver (D) Zinc and nickel

Last Answer : Answer: Option A

The storage battery generally used in electric power station is A. Nickel-cadmium battery B. Zinc carbon battery C. Lead-acid battery D. None of the above

Description : The storage battery generally used in electric power station is A. Nickel-cadmium battery B. Zinc carbon battery C. Lead-acid battery D. None of the above

Last Answer : C. Lead-acid battery

The storage battery generally used in electric power station is A] nickel-cadmium battery B] zinc-carbon battery C] lead-acid battery D] None of the above

Description : The storage battery generally used in electric power station is A] nickel-cadmium battery B] zinc-carbon battery C] lead-acid battery D] None of the above

Last Answer : C] lead-acid battery

Chocolates can be bad for health because of a high content of (1) cobalt (2) nickel (3) zinc (4) lead

Description : Chocolates can be bad for health because of a high content of (1) cobalt (2) nickel (3) zinc (4) lead

Last Answer : lead

Identify the metal which is non toxic in nature. (1) Chromium (2) Gold (3) Cadmium (4) Cobalt

Description : Identify the metal which is non toxic in nature. (1) Chromium (2) Gold (3) Cadmium (4) Cobalt

Last Answer : (2) Gold Explanation: Toxic metals are metals that form poisonous soluble compounds and have no biological role, i.e. are not essential minerals, or are in the wrong form. Most often the ... essential trace element, but chromium (VI) is a carcinogen. Similarly, cobalt could also be toxic.

Identify the metal which is non toxic in nature. (1) Chromium(2) Gold (3) Cadmium (4) Cobalt

Description : Identify the metal which is non toxic in nature. (1) Chromium(2) Gold (3) Cadmium (4) Cobalt

Last Answer : Gold

Which of the following elements is not present in stainless steel? (1) Iron (2) Tungsten (3) Chromium (4) Nickel

Description : Which of the following elements is not present in stainless steel? (1) Iron (2) Tungsten (3) Chromium (4) Nickel

Last Answer : (2) Tungsten Explanation: Stainless steel is defined as a steel alloy of iron with a minimum of 10.5% to 11% chromium content by mass. There are different types of stainless steels: ... stabilized. This crystal structure makes such steels virtually non-magnetic and less brittle at low temperatures.

Stainless steel is usually made by alloying the steel with – (1) copper and nickel (2) copper and chromium (3) chromium and nickel (4) manganese and copper

Description : Stainless steel is usually made by alloying the steel with – (1) copper and nickel (2) copper and chromium (3) chromium and nickel (4) manganese and copper

Last Answer : (3) chromium and nickel Explanation: In metallurgy, stainless steel is defined as a steel alloy with a minimum of 10.5 per cent to 11 per cent chromium content by mass. There are ... virtually nonmagnetic and less brittle at low temperatures. For greater hardness and strength, more carbon is added.