Gold dissolves in (1) Hydrochloric acid (2) Nitric acid (3) Aqua-regia (4) Acetic acid

Gold dissolves in (1) Hydrochloric acid (2) Nitric acid (3) Aqua-regia (4) Acetic acid
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Aqua-regia
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Gold dissolves in – (1) Hydrochloric acid (2) Nitric acid (3) Aqua-regia (4) Acetic acid

Description : Gold dissolves in – (1) Hydrochloric acid (2) Nitric acid (3) Aqua-regia (4) Acetic acid

Last Answer : (3) Aqua-regia Explanation: Aqua regia or nitro-hydrochloric acid is a highly corrosive mixture of acids, a fuming yellow or red solution. It was named so because it can dissolve the so-called royal or noble metals, gold and platinum.

Which one of the following metals is immune to corrosion by air, water, hydrochloric acid and nitric acid; but is soluble in aqua regia? w) gold x) silver y) magnesium z) nickel

Description : Which one of the following metals is immune to corrosion by air, water, hydrochloric acid and nitric acid; but is soluble in aqua regia? w) gold x) silver y) magnesium z) nickel

Last Answer : ANSWER: W -- GOLD

Aqua regia is a 1 : 3 mixture, by volume, of – (1) conc, nitric acid and conc. hydrochloric acid (2) conc. hydrochloric acid and conc. nitric acid (3) conc. nitric acid and cone. sulphuric acid (4) cone. sulphuric acid and cone. nitric acid

Description : Aqua regia is a 1 : 3 mixture, by volume, of – (1) conc, nitric acid and conc. hydrochloric acid (2) conc. hydrochloric acid and conc. nitric acid (3) conc. nitric acid and cone. sulphuric acid (4) cone. sulphuric acid and cone. nitric acid

Last Answer : (1) conc. nitric acid and conc. hydrochloric acid Explanation: Aqua regia or nitro-hydrochloric acid is a highly corrosive mixture of acids, a fuming yellow or red solution. The mixture is ... , tantalum, osmium, rhodium and a few other metals are capable of withstanding its corrosive properties.

Aqua regia is: w) concentrated nitric acid x) a mixture of three parts of concentrated hydrochloric acid and one part concentrated nitric acid y) concentrated hydrochloric acid z) a mixture of sulfuric acid and hydrochloric acid

Description : Aqua regia is: w) concentrated nitric acid x) a mixture of three parts of concentrated hydrochloric acid and one part concentrated nitric acid y) concentrated hydrochloric acid z) a mixture of sulfuric acid and hydrochloric acid

Last Answer : ANSWER: X -- A MIXTURE OF THREE PARTS OF CONCENTRATED HYDROCHLORIC ACID AND ONE PART CONCENTRATED NITRIC ACID 

Aqua regia is a 1 : 3 mixture, by volume, of (1) conc. nitric acid and conc. hydrochloric acid (2) conc. hydrochloric acid and conc. nitric acid (3) conc. nitric acid and conc. sulphuric acid (4) conc. sulphuric acid and conc. nitric acid

Description : Aqua regia is a 1 : 3 mixture, by volume, of (1) conc. nitric acid and conc. hydrochloric acid (2) conc. hydrochloric acid and conc. nitric acid (3) conc. nitric acid and conc. sulphuric acid (4) conc. sulphuric acid and conc. nitric acid

Last Answer : conc. nitric acid and conc. hydrochloric acid

Assertion : Gold occurs in native state. Reason : Gold dissolves in aqua-regia.

Description : Assertion : Gold occurs in native state. Reason : Gold dissolves in aqua-regia.

Last Answer : Assertion : Gold occurs in native state. Reason : Gold dissolves in aqua-regia. A. Statement -1 is ... . Statement-1 is false but Statement -2 is true

Aluminium storage vessel can be used to store (A) Aqua regia (B) Ferrous sulphate (C) Hydrochloric acid (10%) (D) None of these

Description : Aluminium storage vessel can be used to store (A) Aqua regia (B) Ferrous sulphate (C) Hydrochloric acid (10%) (D) None of these

Last Answer : (D) None of these

. Nitric acid is not used in the manufacture of (A) Detergents (B) Fertilisers (C) Aqua regia (D) Explosives

Description : . Nitric acid is not used in the manufacture of (A) Detergents (B) Fertilisers (C) Aqua regia (D) Explosives

Last Answer : (A) Detergents

Platinum metal (Pt) dissolves in aqua-regia but not in concentrated HCl ot `HNO_(3)` because

Description : Platinum metal (Pt) dissolves in aqua-regia but not in concentrated HCl ot `HNO_(3)` because

Last Answer : Platinum metal (Pt) dissolves in aqua-regia but not in concentrated HCl ot `HNO_(3)` because A. HCl ... (3)` together give `O_(2)` that oxidises Pt

Platinum metal (Pt) dissolves in aqua-regia but not in concentrated HCl ot `HNO_(3)` because

Description : Platinum metal (Pt) dissolves in aqua-regia but not in concentrated HCl ot `HNO_(3)` because

Last Answer : Platinum metal (Pt) dissolves in aqua-regia but not in concentrated HCl ot `HNO_(3)` because A. HCl ... (3)` together give `O_(2)` that oxidises Pt

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 : (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.

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

Which acid is used in Lead storage battery? (1) Sulphuric acid (2) Nitric acid (3) Hydrochloric acid (4) Acetic acid

Description : Which acid is used in Lead storage battery? (1) Sulphuric acid (2) Nitric acid (3) Hydrochloric acid (4) Acetic acid

Last Answer : Sulphuric acid

The acid stored in batteries is – (1) Sulphuric acid (2) Nitric acid (3) Hydrochloric acid (4) Acetic acid

Description : The acid stored in batteries is – (1) Sulphuric acid (2) Nitric acid (3) Hydrochloric acid (4) Acetic acid

Last Answer : (1) Sulphuric acid Explanation: Battery acid is sulfuric acid that has been diluted with water to attain a 37% concentration level. This particular type of acid is used in sealed lead ... of a diluted sulphuric acid to convert electrical energy into potential chemical energy and back again.

The acid stored in batteries is : (1) Sulphuric acid (2) Nitric acid (3) Hydrochloric acid (4) Acetic acid

Description : The acid stored in batteries is : (1) Sulphuric acid (2) Nitric acid (3) Hydrochloric acid (4) Acetic acid

Last Answer : Sulphuric acid

What is aqua regia or royal acid ?

Description : What is aqua regia or royal acid ?

Last Answer : A mixture of one mole of concentrated nitric acid and three moles of concentrated hydrochloric acid is called Raj acid.

What is aqua regia or raj acid ?

Last Answer : : Nitric and hydrochloric acid in the ratio of 3: 1.

Rubber lined vessels are corroded by the action of (A) Aqua regia (B) Chloroform (C) Sulphuric acid (95%) (D) All (A), (B) and (C)

Description : Rubber lined vessels are corroded by the action of (A) Aqua regia (B) Chloroform (C) Sulphuric acid (95%) (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

What does "aqua regia" mean ?

Description : What does "aqua regia" mean ?

Last Answer : " Aqua regia" refers to a mixture of concentrated hydrochloric acid and nitric acid.

Aqua regia is a Mixture of the following in the ratio 1:3 by volume–

Description : Aqua regia is a Mixture of the following in the ratio 1:3 by volume–

Last Answer : Conc HNO3 and conc CHL

What is meant by aqua regia?

Description : What is meant by aqua regia?

Last Answer : Mixture of concentrated nitric acid and hy- drochloric acid in the ratio 1:3

Write briefly (a)Allotropy (b) Nebula (c) Enrichment of Uranium (d) Aqua Regia (e) Greenhouse effect (f) Igneous rocks

Description : Write briefly (a)Allotropy (b) Nebula (c) Enrichment of Uranium (d) Aqua Regia (e) Greenhouse effect (f) Igneous rocks

Last Answer : (a)Allotropy existence of a chemical element in two or more different forms For example, the element carbon has two common allotropes: diamond, where the carbon atoms are bonded together in a ... igneous rocks have been described, most of them formed beneath the surface of the Earth's crust.

Write briefly about any five of the following a. Nuclear radiation b. Theodolite c. Dialysis d. Enrichment of Uranium e. Richter Scale f. Aqua regia g. Iodized salt

Description : Write briefly about any five of the following a. Nuclear radiation b. Theodolite c. Dialysis d. Enrichment of Uranium e. Richter Scale f. Aqua regia g. Iodized salt

Last Answer : a. Nuclear radiation Three are atomic nuclei of some elements that continuously emit some ultraviolet waves called radiation. When the process of radiation is stimulated through various nuclear processes ... , and at approximately the same level throughout the year, irrespective of economic level.

Define any five of the following : Acoustics , Quartz , Cross Pollination , Allele , Optical Illusion , Ovulation , Aqua Regia

Description : Define any five of the following : Acoustics , Quartz , Cross Pollination , Allele , Optical Illusion , Ovulation , Aqua Regia

Last Answer : Acoustics : The science of sound dealing with the production, effects, and transmission of sound waves through various mediums. Includes the effects of reflection, refraction, diffraction, absorption, and ... ; it is just about one of the few substances that can dissolve gold and platinum.

Which of the following cannot be stored in glass bottle? A. Aqua regia B. HF (Answer) C. HCL D. HBr

Description : Which of the following cannot be stored in glass bottle? A. Aqua regia B. HF (Answer) C. HCL D. HBr

Last Answer : B. HF (Answer)

CaCl(OCl) is the chemical formula of (A) Hypo (B) Bleaching powder (C) Plaster of Paris (D) Aqua regia

Description : CaCl(OCl) is the chemical formula of (A) Hypo (B) Bleaching powder (C) Plaster of Paris (D) Aqua regia

Last Answer : (B) Bleaching powder

A metal salt solution gives a yellow precipitate with silver nitrate. The precipitate dissolves in dilute nitric acid as well as in ammonium hydroxide

Description : A metal salt solution gives a yellow precipitate with silver nitrate. The precipitate dissolves in dilute nitric acid as well as in ammonium hydroxide

Last Answer : A metal salt solution gives a yellow precipitate with silver nitrate. The precipitate dissolves in dilute nitric acid as ... (3-)` D. `SO_(4)^(2-)`

Acid used in an automobile battery? (1) Sulphuric acid (2) Hydrochloric acid (3) Nitric acid (4) Citric acid

Description : Acid used in an automobile battery? (1) Sulphuric acid (2) Hydrochloric acid (3) Nitric acid (4) Citric acid

Last Answer : (1) Sulphuric acid Explanation: Each cell of an automotive battery consists of alternate plates of lead (cathode) and (anode) immersed in an electrolyte of sulfuric acid solution.

Which of the following acids serves as an electrolyte in a lead storage battery? (1) Sulphuric acid (2) Lactic acid (3) Hydrochloric acid (4) Nitric acid

Description : Which of the following acids serves as an electrolyte in a lead storage battery? (1) Sulphuric acid (2) Lactic acid (3) Hydrochloric acid (4) Nitric acid

Last Answer : (1) Sulphuric acid Explanation: Dilute sulfuric acid (H2SO4) serves as the electrolyte in a lead-acid battery. Dilute sulfuric acid used for lead acid battery has ratio (to water) of 3:1 other components of the battery include: Lead peroxide (PbO2) and Sponge lead (Pb).

The acid used in lead storage cells is – (1) phosphoric acid (2) hydrochloric acid (3) nitric acid (4) sulphuric acid

Description : The acid used in lead storage cells is – (1) phosphoric acid (2) hydrochloric acid (3) nitric acid (4) sulphuric acid

Last Answer : (4) sulphuric acid Explanation: Lead-acid batteries, invented in 1859 by French physicist Gaston Plante, are the oldest type of rechargeable battery. Despite having a very low energy-to-weight ... attractive for use in motor vehicles to provide the high current required by automobile starter motors.

The acid which is secreted by the glands in the stomach wall is – (1) sulphuric acid (2) hydrochloric acid (3) nitric acid (4) phosphoric acid

Description : The acid which is secreted by the glands in the stomach wall is – (1) sulphuric acid (2) hydrochloric acid (3) nitric acid (4) phosphoric acid

Last Answer : (2) hydrochloric acid Explanation: Gastric acid is a digestive fluid, formed in the stomach. It has a pH of 1.5 to 3.5 and is composed of hydrochloric acid (HCl) (around 0.5%, ... enzymes, and making ingested proteins unravel so that digestive enzymes can break down the long chains of amino acids.

Oil of vitriol is - (1) nitric acid (2) sulfuric acid (3) hydrochloric acid (4) phosphoric acid

Description : Oil of vitriol is - (1) nitric acid (2) sulfuric acid (3) hydrochloric acid (4) phosphoric acid

Last Answer : (2) sulfuric acid Explanation: Sulfuric acid or was called "oil of vitriol" by medieval European alchemists because it was prepared by roasting "green vitriol" in an iron retort.

Oil of vitriol is - (1) nitric acid (2) sulfuric acid (3) hydrochloric acid (4) phosphoric acid

Description : Oil of vitriol is - (1) nitric acid (2) sulfuric acid (3) hydrochloric acid (4) phosphoric acid

Last Answer : (2) sulfuric acid Explanation: Sulfuric acid or H2SO4 was called “oil of vitriol” by medieval European alchemists because it was prepared by roasting “green vitriol” in an iron retort.

The acid used in lead storage cells is – (1) phosphoric acid (2) hydrochloric acid (3) nitric acid (4) sulphuric acid

Description : The acid used in lead storage cells is – (1) phosphoric acid (2) hydrochloric acid (3) nitric acid (4) sulphuric acid

Last Answer : (4) sulphuric acid Explanation: Dilute sulfuric acid (H2SO4) serves as the electrolyte in a lead storage battery. The electrodes of the cells in a lead storage battery consist of lead grids. The openings ... spongy (porous) lead. The opehings of the cathodic grid is filled with lead dioxide (PBO2).

Which of the following is the weakest acid? w) hydrochloric acid x) hydrofluoric acid y) sulfuric acid z) nitric acid

Description : Which of the following is the weakest acid? w) hydrochloric acid x) hydrofluoric acid y) sulfuric acid z) nitric acid

Last Answer : ANSWER: X -- HYDROFLUORIC ACID

What is the common name given to a mixture of three parts of concentrated hydrochloric acid and one part concentrated nitric acid?

Description : What is the common name given to a mixture of three parts of concentrated hydrochloric acid and one part concentrated nitric acid?  

Last Answer : ANSWER: AQUA REGIA

Which of the following acids serves as an electrolyte in a lead storage battery? (1) Sulphuric acid (2) Lactic acid (3) Hydrochloric acid (4) Nitric acid

Description : Which of the following acids serves as an electrolyte in a lead storage battery? (1) Sulphuric acid (2) Lactic acid (3) Hydrochloric acid (4) Nitric acid

Last Answer : Sulphuric acid

The acid which is secreted by the glands in the stomach wall is (1) sulphuric acid (2) hydrochloric acid (3) nitric acid (4) phosphoric acid

Description : The acid which is secreted by the glands in the stomach wall is (1) sulphuric acid (2) hydrochloric acid (3) nitric acid (4) phosphoric acid

Last Answer : hydrochloric acid

The acid used in lead storage cells is (1) phosphoric acid (2) hydrochloric acid (3) nitric acid (4) sulphuric acid

Description : The acid used in lead storage cells is (1) phosphoric acid (2) hydrochloric acid (3) nitric acid (4) sulphuric acid

Last Answer : sulphuric acid

The aqueous solution of which acids is called Vinegar - (1) Citric acid (2) Hydrochloric acid (3) Acetic acid (4) Oxalic acid

Description : The aqueous solution of which acids is called Vinegar - (1) Citric acid (2) Hydrochloric acid (3) Acetic acid (4) Oxalic acid

Last Answer : (3) Acetic acid Explanation: Vinegar is an aqueous solution of acetic acid and trace chemicals that may include flavorings. Vinegar typically contains 5–20% acetic acid by volume.

Sour taste of 'Coca Cola' is due to the presence of – (1) acetic acid (2) phosphoric acid (3) hydrochloric acid (4) formic acid

Description : Sour taste of 'Coca Cola' is due to the presence of – (1) acetic acid (2) phosphoric acid (3) hydrochloric acid (4) formic acid

Last Answer : (2) phosphoric acid Explanation: Food-grade phosphoric acid (additive E338) is used to acidify foods and beverages such as various colas, but not without controversy regarding its ... usually fermented by Aspergillusniger mold from scrap molasses, waste starch hydrolysates and phosphoric acid.

Which of the following aqueous solutions would hav the lowest boiling point? Would it be a 1.0 molal solution of: w) Hydrochloric acid x) Sodium Hydroxide y) Acetic Acid, z) Magnesium Chloride

Description : Which of the following aqueous solutions would hav the lowest boiling point? Would it be a 1.0 molal solution of: w) Hydrochloric acid x) Sodium Hydroxide y) Acetic Acid, z) Magnesium Chloride

Last Answer : ANSWER: Y -- ACETIC ACID

‘Vinegar’ is a commercial name of (1) Oxalic acid (2) Hydrochloric acid (3) Acetic acid (4) Citric acid

Description : ‘Vinegar’ is a commercial name of (1) Oxalic acid (2) Hydrochloric acid (3) Acetic acid (4) Citric acid 

Last Answer : Acetic acid

Sour taste of ‘Coca Cola’ is due to the presence of (1) acetic acid (2) phosphoric acid (3) hydrochloric acid (4) formic acid

Description : Sour taste of ‘Coca Cola’ is due to the presence of (1) acetic acid (2) phosphoric acid (3) hydrochloric acid (4) formic acid

Last Answer : phosphoric acid 

Which acid is used in Lead storage batteiy? (1) Sulphuric acid (2) Nitric acid (3) Hydrochlotic acid (4) Acetic acid

Description : Which acid is used in Lead storage batteiy? (1) Sulphuric acid (2) Nitric acid (3) Hydrochlotic acid (4) Acetic acid

Last Answer : (1) Sulphuric acid Explanation: Lead acid battery is a storage battery or secondary battery in which electrical energy can be stored as chemical energy and this chemical energy is then converted to ... of a Lead-dioxide cathode, a sponge metallic Lead anode and a Sulphuric acid solution electrolyte.

What element is in sulphuric acid hydrochloric acid nitric acid and ethanoic acid?

Description : What element is in sulphuric acid hydrochloric acid nitric acid and ethanoic acid?

Last Answer : Hydrogen

The acid used in a car battery is _____. A. Hydrochloric acid B. Nitric acid C. Sulphuric acid D. Carbonic acid

Description : The acid used in a car battery is _____. A. Hydrochloric acid B. Nitric acid C. Sulphuric acid D. Carbonic acid

Last Answer : ANSWER: C

The acid used in a car battery is _____. A. Hydrochloric acid B. Nitric acid C. Sulphuric acid D. Carbonic acid

Description : The acid used in a car battery is _____. A. Hydrochloric acid B. Nitric acid C. Sulphuric acid D. Carbonic acid

Last Answer : ANSWER: C

The acid used in a car battery is _____. A. Hydrochloric acid B. Nitric acid C. Sulphuric acid D. Carbonic acid

Description : The acid used in a car battery is _____. A. Hydrochloric acid B. Nitric acid C. Sulphuric acid D. Carbonic acid

Last Answer : ANSWER: C

Which of the following acids is synthesized in human stomach? (1) Sulphuric acid (2) Nitric acid (3) Hydrochloric acid (4) Phosphoric acid

Description : Which of the following acids is synthesized in human stomach? (1) Sulphuric acid (2) Nitric acid (3) Hydrochloric acid (4) Phosphoric acid

Last Answer : (3) Hydrochloric acid Explanation: Hydrochloric acid is sythesised in human stomach.