Which of the following is incorrect? (a) Mercury: Hg (b) Silver: Ag (c) Sodium: Na (d) Potassium: Ka

Which of the following is incorrect? (a) Mercury: Hg (b) Silver: Ag (c) Sodium: Na (d) Potassium: Ka
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The metal used to recover copper from a solution of copper sulfate is - (1) Na (2) Ag (3) Hg (4) Fe

Description : The metal used to recover copper from a solution of copper sulfate is - (1) Na (2) Ag (3) Hg (4) Fe

Last Answer : (4) Fe Explanation: The metal used to recover copper from a solution of copper sulfate is Fe.

Statement-1: Zn displaces Ag from the complex `Na[Ag(CN)_(2)]` to give `Na_(2)[Zn(CN)_(4)]` Statement-2:Zn is more electro positive than silver

Description : Statement-1: Zn displaces Ag from the complex `Na[Ag(CN)_(2)]` to give `Na_(2)[Zn(CN)_(4)]` Statement-2:Zn is more electro positive than silver

Last Answer : Statement-1: Zn displaces Ag from the complex `Na[Ag(CN)_(2)]` to give `Na_(2)[Zn(CN)_(4) ... false D. Statement-1 is false but Statement -2 is true

The most commonly used chemicals in the artificial rainmaking or cloud seeding are (1) Silver Iodide (Ag I) (2) Sodium Chloride (NaCl) (3) Dry Ice (Frozen CO2 ) (4) All of the above

Description : The most commonly used chemicals in the artificial rainmaking or cloud seeding are (1) Silver Iodide (Ag I) (2) Sodium Chloride (NaCl) (3) Dry Ice (Frozen CO2 ) (4) All of the above

Last Answer : Silver Iodide (Ag I) 

Cold conc. `HNO_(3)` will completely dissolve: (i) Pb (ii) `Pb_(3)O_(4)` (iii) Fe (iv) Sn (v) Mg (vi) MgO (vii) Hg (viii) Au (ix) Ag (x) Pt

Description : Cold conc. `HNO_(3)` will completely dissolve: (i) Pb (ii) `Pb_(3)O_(4)` (iii) Fe (iv) Sn (v) Mg (vi) MgO (vii) Hg (viii) Au (ix) Ag (x) Pt

Last Answer : Cold conc. `HNO_(3)` will completely dissolve: (i) Pb (ii) `Pb_(3)O_(4)` (iii) Fe (iv) Sn (v) Mg (vi) MgO (vii) Hg (viii) Au (ix) Ag (x) Pt

Cold conc. `HNO_(3)` will completely dissolve: (i) Pb (ii) `Pb_(3)O_(4)` (iii) Fe (iv) Sn (v) Mg (vi) MgO (vii) Hg (viii) Au (ix) Ag (x) Pt

Description : Cold conc. `HNO_(3)` will completely dissolve: (i) Pb (ii) `Pb_(3)O_(4)` (iii) Fe (iv) Sn (v) Mg (vi) MgO (vii) Hg (viii) Au (ix) Ag (x) Pt

Last Answer : Cold conc. `HNO_(3)` will completely dissolve: (i) Pb (ii) `Pb_(3)O_(4)` (iii) Fe (iv) Sn (v) Mg (vi) MgO (vii) Hg (viii) Au (ix) Ag (x) Pt

Among the sulphide oers of Ag,Hg,Pb,Fe Cu anZn how many of them can be extracted by self reduction process.

Description : Among the sulphide oers of Ag,Hg,Pb,Fe Cu anZn how many of them can be extracted by self reduction process.

Last Answer : Among the sulphide oers of Ag,Hg,Pb,Fe Cu anZn how many of them can be extracted by self reduction process.

Where was Ta-Na-E-Ka?

Description : Where was Ta-Na-E-Ka?

Last Answer : Feel Free to Answer

Statement-I : In the extraction of Ag, the complex `Na[Ag(CN)_(2)]` is reacted with `Zn` Statement-II : `Zn` is transition metal according to electron

Description : Statement-I : In the extraction of Ag, the complex `Na[Ag(CN)_(2)]` is reacted with `Zn` Statement-II : `Zn` is transition metal according to electron

Last Answer : Statement-I : In the extraction of Ag, the complex `Na[Ag(CN)_(2)]` is reacted with `Zn` ... . Statement-1 : is false , statement-2 : is true

Number of metals among following which are obatained by electromentallurgy in molten state are Li, Ba, Na,Al, Fe, Cu, Pb, Sn, Ag, Zn, Ca, Mg.

Description : Number of metals among following which are obatained by electromentallurgy in molten state are Li, Ba, Na,Al, Fe, Cu, Pb, Sn, Ag, Zn, Ca, Mg.

Last Answer : Number of metals among following which are obatained by electromentallurgy in molten state are Li, Ba, Na,Al, Fe, Cu, Pb, Sn, Ag, Zn, Ca, Mg.

Which of the following will replace hydrogen from acids to form salts? (1) S (2) Na (3) Ag (4) P

Description : Which of the following will replace hydrogen from acids to form salts? (1) S (2) Na (3) Ag (4) P

Last Answer : (2) Na Explanation: All acids contain hydrogen atom (s). Dilute acids react with some metals such as Sodium, Potassium, Calcium, iron, etc to form salts. Sodium replaces two hydrogen atoms from Sulfuric acid (H2SO4) to form a normal salt, Sodium Sulphate (Na2SO4).

Which one occupies the lowermost position in the electromotive series of metals? (A) Aluminium (B) Noble metals (Ag, Pt, Au) (C) Zinc (D) Alkali metals (K, Na, Li)

Description : Which one occupies the lowermost position in the electromotive series of metals? (A) Aluminium (B) Noble metals (Ag, Pt, Au) (C) Zinc (D) Alkali metals (K, Na, Li)

Last Answer : (B) Noble metals (Ag, Pt, Au)

Which of the following will replace hydrogen from acids to form salts ? (1) S (2) Na (3) Ag (4) P

Description : Which of the following will replace hydrogen from acids to form salts ? (1) S (2) Na (3) Ag (4) P

Last Answer : Na

Which of the following statements about the physical properties of metal is not correct? (a) All metals are solid except mercury (b) Most metals are hard except sodium and potassium (c) Metals are not malleable (d) Most metals are ductile

Description : Which of the following statements about the physical properties of metal is not correct? (a) All metals are solid except mercury (b) Most metals are hard except sodium and potassium (c) Metals are not malleable (d) Most metals are ductile

Last Answer : Ans:(c)

Which of the following liquid metals has the highest thermal conductivity? (A) Molten sodium (B) Molten lead (C) Mercury (D) Molten potassium

Description : Which of the following liquid metals has the highest thermal conductivity? (A) Molten sodium (B) Molten lead (C) Mercury (D) Molten potassium

Last Answer : (A) Molten sodium

IN which set do all elements tend to form anions in binary ionic compounds Question 3 options N S I Ca B K K Ga Pb Fe Hg Na?

Description : IN which set do all elements tend to form anions in binary ionic compounds Question 3 options N S I Ca B K K Ga Pb Fe Hg Na?

Last Answer : Need answer

Which of the following chemicals is used in photography? (1) Aluminium hydroxide (2) Silver bromide (3) Potassium nitrate (4) Sodium chloride

Description : Which of the following chemicals is used in photography? (1) Aluminium hydroxide (2) Silver bromide (3) Potassium nitrate (4) Sodium chloride

Last Answer : (2) Silver bromide Explanation: Silver bromide (AOBr), a soil , pale-yellow, water insoluble salt well known (along with other silver hali(les) for its unusual sensitivity to light:. This ... making the Shroud of Turin. The salt can be found naturally as the mineral bromargyrite (bromyrite).

Which of the following chemicals is used in photography ? (1) Aluminium hydroxide (2) Silver bromide (3) Potassium nitrate (4) Sodium chloride

Description : Which of the following chemicals is used in photography ? (1) Aluminium hydroxide (2) Silver bromide (3) Potassium nitrate (4) Sodium chloride

Last Answer : Silver bromide

What is the atomic mass of Silver ( Ag) ?

Description : What is the atomic mass of Silver ( Ag) ?

Last Answer : Its atomic mass is 106 |

Extraction of `Ag` from sulphide ore and removal of unreacted silver bromide from phorographic plate involve complexes:

Description : Extraction of `Ag` from sulphide ore and removal of unreacted silver bromide from phorographic plate involve complexes:

Last Answer : Extraction of `Ag` from sulphide ore and removal of unreacted silver bromide from phorographic plate involve ... (3))_(2)]^(3-)` respectively

In the electrolysis of silver chloride, a charge of `4xx10^(5)` C is flowing through the electrolyte. Calculate the number of silver `(Ag^(+))` ions f

Description : In the electrolysis of silver chloride, a charge of `4xx10^(5)` C is flowing through the electrolyte. Calculate the number of silver `(Ag^(+))` ions f

Last Answer : In the electrolysis of silver chloride, a charge of `4xx10^(5)` C is flowing through the electrolyte. ... silver `(Ag^(+))` ions flowing through it.

Which of the following is an electrolytic cell A. lron * (ll) * (Fe) oxidized, aluminum (Al) reduced O B. Silver (Ag) oxidized, gold (Au) reduced C. Aluminum () oxidized (Zn) reduced LithiumD. (Li) oxidized, (Zn) reduced?

Description : Which of the following is an electrolytic cell A. lron * (ll) * (Fe) oxidized, aluminum (Al) reduced O B. Silver (Ag) oxidized, gold (Au) reduced C. Aluminum () oxidized (Zn) reduced LithiumD. (Li) oxidized, (Zn) reduced?

Last Answer : The answer is not c.

Why is Zinc and not Copper used for the recovery of Silver from the complex [Ag (CN)2 ] ?

Description : Why is Zinc and not Copper used for the recovery of Silver from the complex [Ag (CN)2 ] ? 

Last Answer : Ans. Zinc is stronger reducing agent and more electropositive than Copper. (E° = + 0.34V) 

Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction? (A) Oxidation of Na + ions (B) Oxidation of Cl - ions (C) Reduction of Na + ions (D) Reduction of Cl - ions

Description : Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction? (A) Oxidation of Na + ions (B) Oxidation of Cl - ions (C) Reduction of Na + ions (D) Reduction of Cl - ions

Last Answer : (B) Oxidation of Cl - ions

Potassium therapy tends to counteract the cardiac toxicity of digitalis by: A. Reducing the affinity of sarcolemal Na+ K+ATPase for digitalis B. Suppressing ectopic automaticity enhanced by digitalis C. Promoting A-V conduction D. Both 'A' and 'B' are correct

Description : Potassium therapy tends to counteract the cardiac toxicity of digitalis by: A. Reducing the affinity of sarcolemal Na+ K+ATPase for digitalis B. Suppressing ectopic automaticity enhanced by digitalis C. Promoting A-V conduction D. Both 'A' and 'B' are correct

Last Answer : D. Both 'A' and 'B' are correct

Mercury is also known as-----? A. Shine Silver B. Quick Silver (Answer)

Description : Mercury is also known as-----? A. Shine Silver B. Quick Silver (Answer)

Last Answer : B. Quick Silver (Answer)

The best conductors of heat are A) Silver and Copper B) Lead and Mercury C) Iron and Tin D) Gold and Platinum

Description : The best conductors of heat are A) Silver and Copper B) Lead and Mercury C) Iron and Tin D) Gold and Platinum

Last Answer : A) Silver and Copper

Which of the following metals has least, melting point? (1) Gold (2) Silver (3) Mercury (4) Copper

Description : Which of the following metals has least, melting point? (1) Gold (2) Silver (3) Mercury (4) Copper

Last Answer : (3) Mercury Explanation: The melting point of the given metals (in Celsius) are:- Gold: 1063; Silver: 961; Copper: 1083; Mercury: 38.86. Mercury is the only elemental metal known to melt at a generally cold temperature.

Which of the following is the lightest metal? (1) Mercury (2) Silver (3) Lithiu (4) Lead

Description : Which of the following is the lightest metal? (1) Mercury (2) Silver (3) Lithiu (4) Lead

Last Answer : (3) Lithium Explanation: The lightest or least dense metal that is a pure element is lithium, which has a density of 0.534 g/cm3. This makes lithium nearly half as dense as water, so if lithium was not so reactive, a chunk of the metal would float on water.

Chemically 'Quick Silver’ is known as (1) Mercury (2) Silver (3) Gold (4) Copper

Description : Chemically 'Quick Silver’ is known as (1) Mercury (2) Silver (3) Gold (4) Copper

Last Answer : (1) Mercury Explanation: Quicksilver is an alternative name for the element mercury. A heavy, silvery dblock element, mercury is the only metal that is liquid at standard conditions for temperature ... is bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature.

In mirrors the back surface is coated with a thin layer of (1) Mercury (2) Silver (3) Red oxide (4) Silver nitrate

Description : In mirrors the back surface is coated with a thin layer of (1) Mercury (2) Silver (3) Red oxide (4) Silver nitrate

Last Answer : (2) Silver Explanation: In a spherical mirror, one of the two curved surfaces is coated with a thin layer of silver followed by a coating of red lead oxide paint. Thus, one side of the spherical minor is opaque and the other side is a highly polished reflecting surface.

Which metal is causing for Minamata disease - a) Iron b) Mercury c) Gold d) Silver

Description : Which metal is causing for Minamata disease - a) Iron b) Mercury c) Gold d) Silver

Last Answer : b) Mercury

Heavy metals, such as____work by _____‗‗ a. Mercury; Disrupting Membranes b. Copper; Producing Toxins c. Iodine; Denaturing Proteins d. Silver; Binding Protein Molecules Together

Description : Heavy metals, such as____work by _____‗‗ a. Mercury; Disrupting Membranes b. Copper; Producing Toxins c. Iodine; Denaturing Proteins d. Silver; Binding Protein Molecules Together

Last Answer : d. Silver; Binding Protein Molecules Together

What is correct in regard to high copper amalgam, A. Reacts and strengthens the amalgam by its dispersion properties B. Reacts to form copper-tin phase thereby eliminating the tin-mercury phase C. Reacts to form copper-silver phase thereby eliminating the silver mercury phase D. Reacts and strengthens the amalgam by its grain diffusion

Description : What is correct in regard to high copper amalgam, A. Reacts and strengthens the amalgam by its dispersion properties B. Reacts to form copper-tin phase thereby eliminating the tin-mercury ... thereby eliminating the silver mercury phase D. Reacts and strengthens the amalgam by its grain diffusion

Last Answer : B. Reacts to form copper-tin phase thereby eliminating the tin-mercury phase

Choose a statement that correctly defines the term AMALGAM: A. Amalgam is a metallic powder composed of silver, tin, copper and zinc B. Amalgam is an alloy of two or more metals that have been dissolved in each other in the molten state. C. Amalgam is an alloy of two or more metals, one of them is mercury D. Amalgam is a metallic substance in powder or tablet from that is mixed with mercury E. Amalgam is an alloy of two or more metals, one of them is tin

Description : Choose a statement that correctly defines the term AMALGAM: A. Amalgam is a metallic powder composed of silver, tin, copper and zinc B. Amalgam is an alloy of two or more metals that have been dissolved in ... is mixed with mercury E. Amalgam is an alloy of two or more metals, one of them is tin

Last Answer : C. Amalgam is an alloy of two or more metals, one of them is mercury

__________ metal is liquid at room temperature . a) mercury b)iron c)copper d)silver

Description : __________ metal is liquid at room temperature . a) mercury b)iron c)copper d)silver

Last Answer : a) mercury

A COPPER strip is placed in one compartment of a voltaic cell and a wire connects this strip to a piece of metal in the other compartment through a voltmeter. If the voltmeter reads zero, the other piece of metal is: w) zinc x) mercury y) silver z) copper

Description : A COPPER strip is placed in one compartment of a voltaic cell and a wire connects this strip to a piece of metal in the other compartment through a voltmeter. If the voltmeter reads zero, the other piece of metal is: w) zinc x) mercury y) silver z) copper

Last Answer : ANSWER: Z -- COPPER

Which of the following metals has least melting point ? (1) Gold (2) Silver (3) Mercury (4) Copper

Description : Which of the following metals has least melting point ? (1) Gold (2) Silver (3) Mercury (4) Copper

Last Answer : Mercury

Chemically ‘Quick Silver is known as (1) Mercury (2) Silver (3) Gold (4) Copper

Description : Chemically ‘Quick Silver is known as (1) Mercury (2) Silver (3) Gold (4) Copper

Last Answer : Mercury

In mirrors the back surface is coated with a thin layer of : (1) Mercury (2) Silver (3) Red oxide (4) Silver nitrate

Description : In mirrors the back surface is coated with a thin layer of : (1) Mercury (2) Silver (3) Red oxide (4) Silver nitrate

Last Answer : Silver

What is the double replacement for potassium chloride plus silver nitrate?

Description : What is the double replacement for potassium chloride plus silver nitrate?

Last Answer : The chemical reaction is:KCl + AgNO3 = AgCl(s) + KNO3

What is the double replacement for potassium chloride plus silver nitrate?

Description : What is the double replacement for potassium chloride plus silver nitrate?

Last Answer : The chemical reaction is:KCl + AgNO3 = AgCl(s) + KNO3

A 'breath test' used by traffic police to check drunken driving uses: (1) potassium dichromate-sulphuric acid (2) potassium permanganate-sulphuric acid (3) turmeric on filter paper (4) silica gel coated with silver nitrate

Description : A 'breath test' used by traffic police to check drunken driving uses: (1) potassium dichromate-sulphuric acid (2) potassium permanganate-sulphuric acid (3) turmeric on filter paper (4) silica gel coated with silver nitrate

Last Answer : (1) potassium dichromatesulphuric acid Explanation: The main constituent of alcohol is Ethanol and the concentration of ethanol in a sample can be determined by back titration with acidified potassium ... contact with the yellow dichromate-coated crystals, the color changes from yellow to green.

The chemical used for cloud seeding for artificial rains is - (1) Silver Nitrate (2) Potassium Bromide (3) Silver Iodide (4) Potassium Nitrate

Description : The chemical used for cloud seeding for artificial rains is - (1) Silver Nitrate (2) Potassium Bromide (3) Silver Iodide (4) Potassium Nitrate

Last Answer : (3) Silver Iodide Explanation: The chemical used for cloud seeding for artificial rains is silver iodide.

Which of the following cannot be beaten into Sheets? (1) Gold (2) Silver (3) Potassium (4) Aluminium

Description : Which of the following cannot be beaten into Sheets? (1) Gold (2) Silver (3) Potassium (4) Aluminium

Last Answer : (3) Potassium Explanation: Substances that can be beaten into thin sheets are called malleable. Most metals are malleable.

The plates of a NiCad storage battery are made of ________. A. potassium hydroxide with a small amount of sulfuric acid B. lead and lead peroxide C. silver oxide and lead sulfate D. combinations of nickel powder and nickel & cadmium salts

Description : The plates of a NiCad storage battery are made of ________. A. potassium hydroxide with a small amount of sulfuric acid B. lead and lead peroxide C. silver oxide and lead sulfate D. combinations of nickel powder and nickel & cadmium salts

Last Answer : Answer: D

X-ray films have an emulsion on one or both sides of a support material. The emulsion contains particles of, A. Silver nitrate crystal B. Metallic silver in gelatine C. Silver bromide in gelatine D. Silver nitrate in gelatine E. Potassium bromide in gelatine

Description : X-ray films have an emulsion on one or both sides of a support material. The emulsion contains particles of, A. Silver nitrate crystal B. Metallic silver in gelatine C. Silver bromide in gelatine D. Silver nitrate in gelatine E. Potassium bromide in gelatine

Last Answer : C. Silver bromide in gelatine

A ‘breath test’ used by traffic police to check drunken driving uses: (1) potassium dichromate-sulphuric acid (2) potassium perma-nganatesulphuric acid (3) turmeric on filter paper (4) silica gel coated with silver nitrate

Description : A ‘breath test’ used by traffic police to check drunken driving uses: (1) potassium dichromate-sulphuric acid (2) potassium perma-nganatesulphuric acid (3) turmeric on filter paper (4) silica gel coated with silver nitrate

Last Answer : potassium dichromate-sulphuric acid

The chemical used for cloud seeding for artificial rains is (1) Silver Nitrate (2) Potassium Bromide (3) Silver Iodide (4) Potassium Nitrate

Description : The chemical used for cloud seeding for artificial rains is (1) Silver Nitrate (2) Potassium Bromide (3) Silver Iodide (4) Potassium Nitrate

Last Answer : Silver Iodide

why is the periodic table symbol for sodium, Na ?

Description : why is the periodic table symbol for sodium, Na ?

Last Answer : Many of them, like lead (Pb) are named after their latin roots.

Which of the following can be purified by the electrolytic method? (a) Sodium (Na) (b) Copper (Cu) (c) Boron (B) (d) Chlorine (C12)

Description : Which of the following can be purified by the electrolytic method? (a) Sodium (Na) (b) Copper (Cu) (c) Boron (B) (d) Chlorine (C12)

Last Answer : Ans:129