(A) Au,Pt,Ag etc are found in free state (R ) The metals which are noble and chemically less reactive are found in free state

(A) Au,Pt,Ag etc are found in free state (R ) The metals which are noble and chemically less reactive are found in free state
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(A) Au,Pt,Ag etc are found in free state (R ) The metals which are noble and chemically less reactive ... D. If (A) is incorrect but (R ) is correct
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Copper is the most noble of first row transition metals and occurs in small deposits in serveral countries. Ores of copper include chalcanthite `(CuSO

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What is the most active group of nonmetals noble gases alkaline earth halogens alkali metals?

Description : What is the most active group of nonmetals noble gases alkaline earth halogens alkali metals?

Last Answer : The most active metals are alkali metals.The most active nonmetals are halogens.

Who has the most active group of nonmetals noble gases alkaline earth halogens alkali metals?

Description : Who has the most active group of nonmetals noble gases alkaline earth halogens alkali metals?

Last Answer : Kevin

Why are gold and platinum called noble metals?

Description : Why are gold and platinum called noble metals?

Last Answer : Because they don't react with other elements.

One of the following is used to dissolve noble metals. That is – (1) Nitric acid (2) Hydrochloric acid (3) Sulphuric acid (4) Aqua ragia

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Last Answer : (4) Aqua ragia Explanation: Aqua regia ("royal water"), aqua aegis ("king's water"), or nitro-hydrochloric acid is a highly corrosive mixture of acids, a fuming yellow or red ... ruthenium, tantalum, osmium, rhodium and a few other metals are capable of withstanding its corrosive properties.

Which one of the following is used to dissolve noble metals?

Description : Which one of the following is used to dissolve noble metals?

Last Answer : Aqua regia

Noble metals?

Description : Noble metals?

Last Answer : Silver; Platinum; Gold

The processof producing noble metals is?

Description : The processof producing noble metals is?

Last Answer : Cyanide Process

Noble metals are?

Description : Noble metals are?

Last Answer : Silver (Ag); Platinum (Pt) & Gold (Au)

Which scientific method is used for the production/extraction of Noble metals?

Description : Which scientific method is used for the production/extraction of Noble metals?

Last Answer : Cyanide process

Pick out the wrong statement pertaining to nitric acid. (A) About 90% of nitric acid is manufactured by Ostwald's process (B) It is a strong mono basic acid which reacts with almost all the metals except noble metals (C) Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2 ) (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process

Description : Pick out the wrong statement pertaining to nitric acid. (A) About 90% of nitric acid is manufactured by Ostwald's process (B) It is a strong mono basic acid which reacts with almost all the ... (mainly NO2 ) (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process

Last Answer : (D) Arc process of nitric acid manufacture is economical as compared to Ostwald's process

The elements that have an outer electron configuration ns2 (read: n - s - 2) are called: w) halogens x) transition metals y) alkaline earths z) noble gases

Description : The elements that have an outer electron configuration ns2 (read: n - s - 2) are called: w) halogens x) transition metals y) alkaline earths z) noble gases

Last Answer : ANSWER: Y -- ALKALINE EARTHS

One of the following is used to dissolve noble metals. That is (1) Nitric acid (2) Hydrochloric acid (3) Sulphuric acid (4) Aqua ragia

Description : One of the following is used to dissolve noble metals. That is (1) Nitric acid (2) Hydrochloric acid (3) Sulphuric acid (4) Aqua ragia

Last Answer : Aqua ragia

Bessemerisation is carried out for: (P) Fe, (Q) Cu, (R )Al, (S) Ag

Description : Bessemerisation is carried out for: (P) Fe, (Q) Cu, (R )Al, (S) Ag

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Which one of the following statements in not correct? [CDS 2003] (a) India is the highest oil-seeds and vegetable oil producing country in the world (b) India is the second largest exporter of jute goods in the world In d ian Ag r ic u l t u r ea n d An i ma l H u s ba n d r y (c) India is the largest producer of silk in world (d) India is the second largest producer of three-wheeler motor vehicles in the world

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Last Answer : Ans: (c)

What is the name of the family of reactive metals having valency two?

Description : What is the name of the family of reactive metals having valency two?

Last Answer : What is the name of the family of reactive metals having valency two?

What is the name of the family of reactive metals having valency one?

Description : What is the name of the family of reactive metals having valency one?

Last Answer : What is the name of the family of reactive metals having valency one?

Are alkaline metals reactive?

Description : Are alkaline metals reactive?

Last Answer : Alkaline metals are the most reactive metals.

What group of non metals are the most reactive?

Description : What group of non metals are the most reactive?

Last Answer : The most reactive nonmetal is fluorine. Fluorine is a halogen, which is Group 17 on the Periodic Table, and the halogens are the most reactive...

Give reason: Some metals are more reactive than others.

Description : Give reason: Some metals are more reactive than others.

Last Answer : Metals are electropositive and have tendency to donate electrons. Some elements give up their valence electrons and hence more reactive.

Which of the following metals is LEAST reactive toward atmospheric oxygen? w) Lead x) Copper y) Iron z) Aluminum

Description : Which of the following metals is LEAST reactive toward atmospheric oxygen? w) Lead x) Copper y) Iron z) Aluminum

Last Answer : ANSWER: X -- COPPER

Why are Cr+ , Ag+ & Sc+3 Colour less ?

Description : Why are Cr+ , Ag+ & Sc+3 Colour less ? 

Last Answer : Ans It is because they do not have unpaired electrons ,therefore can not under goes d-d transition .