Description : Hypo, used in photography, is chemically (a) silver bromide (b) sodium thiosulphate (c) sodium phosphate (d) silver nitrate
Last Answer : Ans:(b)
Description : To a 25 mL `H_(2)O_(2)` solution excess acidified solution of Kl was added. The iodine liberated 20 ml of 0.3 N sodium thiosulphate solution. Use thes
Last Answer : To a 25 mL `H_(2)O_(2)` solution excess acidified solution of Kl was added. The iodine liberated 20 ml of ... strength of `H_(2)O_(2)` is 1.344 L
Description : The chemical name of "Hypo" commonly used in photography is – (1) Sodium thiosulphate (2) Silver nitrate (3) Sodium nitrate (4) Silver iodide
Last Answer : (1) Sodium thiosulphate Explanation: An emulsion of sodium thiosulfate is called hypo by photographers. It is used to stop development of exposed film. Thiosulfate converts undeveloped silver bromide ... into water-soluble silver thiosulfate complexes that can be removed when the film is washed.
Description : Function of sodium thiosulphate (hypo) in development of photographic film/plate is to (A) Brighten the faint images (B) Remove metallic silver (C) Convert silver chloride to silver (D) Remove unexposed silver halide
Last Answer : (D) Remove unexposed silver halide
Description : The chemical name of ‘‘Hypo’’ commonly used in photography is (1) Sodium thiosulphate (2) Silver nitrate (3) Sodium nitrate (4) Silver iodide
Last Answer : Sodium thiosulphate
Description : A student took Sodium Sulphate solution in a test tube and added Barium Chloride solution to it. He observed that an insoluble substance has formed. The colour and molecular formula of the insoluble substance is (a) Grey, Ba2SO4 (b) Yellow, Ba(SO4)2, (c) White, BaSO4 (d) Pink, BaSO4,
Last Answer : Answer: (c) White, BaSO4
Description : A solution of sodium thiosulphate on addition of few drops of ferric chloride gives violet colour due to the formation of
Last Answer : A solution of sodium thiosulphate on addition of few drops of ferric chloride gives violet colour due to the formation of ... `Fe_(2)(S_(2)O_(3))_(2)`
Description : Doctor's solution used for sweetening of petroleum products is (A) Sodium plumbite (B) Sodium sulphite (C) Sodium thiosulphate (D) Lead sulphate
Last Answer : (A) Sodium plumbite
Description : The chemical used in developing photographic films is – (1) silver bromide (2) hypo (3) sodium sulphate (4) hydroquinone
Last Answer : (1) silver bromide Explanation: Tritium is a radioactive isotope of hydrogen. It is the lightest radioactive element.
Description : Which halide is used in making sensitive emulsion on photographic film? (1) Sodium chloride (2) Silver bromide (3) Silver iodide (4) Silver chloride
Last Answer : (2) Silver bromide Explanation: Silver bromide, a soft, paleyellow, water insoluble salt well known for its unusual sensitivity to light. This property has allowed silver halides to become the basis of modern photographic materials.
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).
Description : The chemical used in developing photographic films is (1) silver bromide (2) hypo (3) sodium sulphate (4) hydroquinone
Last Answer : silver bromide
Description : Which halide is used in making sensitive emulsion on photograhic film? (1) Sodium chloride (2) Silver bromide (3) Silver iodide (4) Silver chloride
Last Answer : Silver bromide
Description : Which of the following chemicals is used in photography ? (1) Aluminium hydroxide (2) Silver bromide (3) Potassium nitrate (4) Sodium chloride
Description : A white sodium salt dissolves readily in water to give a solution which is neutral to litmus. When silver nitrate solution is added to the aforementio
Last Answer : A white sodium salt dissolves readily in water to give a solution which is neutral to litmus. When silver nitrate solution ... . `S^(2-)` D. `Cl^(-)`
Description : A white sodium salt dissolves readily in water to give a solution which is neutral to litmus. When silver nitrate solution is added to the solution, a
Last Answer : A white sodium salt dissolves readily in water to give a solution which is neutral to litmus. When silver nitrate solution ... (3)^(2-)` D. `S^(2-)`
Description : silver nitrate is added to a solution of sodium chloride?
Last Answer : A solution of silver nitrate is added to a solution of sodium chloride, it produces a white insoluble precipitate of silver chloride. AgNO3 (aq)+NaCl(aq)→AgCl(ppt)+NaNO3 (aq)
Description : The major product obtained when tert- butyl bromide is heated with sodium ethoxide is
Last Answer : The major product obtained when tert- butyl bromide is heated with sodium ethoxide is A. 2- ... Ehene C. tert- Buty1methy1ether D. Diethyl ether
Description : Which of these statement is true for sodium thiosulphate ?
Last Answer : Which of these statement is true for sodium thiosulphate ? A. it acts as an antichlor B. it ... hypo to dissolve excess of AgBr as a soluble complex
Description : In the test for iodine, `I_(2)` is treated with sodium thiosulphate `(Na_(2)S_(2)O_(3))` : `Na_(2)S_(2)O_(3)+I_(2) to NaI +..`
Last Answer : In the test for iodine, `I_(2)` is treated with sodium thiosulphate `(Na_(2)S_(2)O_(3))` : `Na_(2)S_(2)O_(3 ... (4)` C. `Na_(2)S` D. `Na_(3)ISO_(4)`
Description : Statement -1 : Sodium thiosulphate is not prepared by boiling `Na_(2)SO_(3)` with S in acidic medium. Statement -2 : `Na_(2)S_(2)O_(3)+H^(+) to 2Na++H
Last Answer : Statement -1 : Sodium thiosulphate is not prepared by boiling `Na_(2)SO_(3)` with S in acidic medium. Statement ... +H^(+) to 2Na++H_(2)SO_(3)+Sdarr`
Description : Which of the following statements are true about sodium thiosulphate?
Last Answer : Which of the following statements are true about sodium thiosulphate? A. It is used in ... It contains ionic, covalent and coordinate covalent bonds
Description : Sodium thiosulphate is prepared by
Last Answer : Sodium thiosulphate is prepared by A. boiling `Na_(2)SO_(3)` solution with elemental sulphur in alkaline ... 5)` with air D. heating sulphur with NaOH
Description : A dark purple compound used as an antiseptic and disinfectant is (a) Potassium nitrate (b) Sodium thiosulphate (c) Potassium permanganate (d) Calcium phosphate
Last Answer : Ans:(c)
Description : Which one of the following is used as a food preservative? (1) Sodium benzoate (2) Sodium thiosulphate (3) Sodium hydroxide (4) Sodium bicarbonate
Last Answer : (1) Sodium. benzoate Explanation: Sodium benzoate has the chemical formula. NaC6H5CO2, it is a widely used food preservative, with E number E211. It is the sodium salt of benzoic acid and exists in this form when dissolved in water. It can be produced by reacting sodium hydroxide with benzoic acid.
Description : The chemical used as a fixer in photography is - (1) sodium thiosulphate (2) sodium sulphate (3) borax (4) ammonium sulphate
Last Answer : (1) sodium thiosulphate Explanation: Fixation is commonly achieved by treating the film or paper with a solution of thiosulfate salt. Popular salts are sodium thiosulfate — commonly called hypo — and ammonium thiosulfate — commonly used in modern rapid fixer formulae.
Description : The chemical used as a fixer in photography is-----? A. sodium sulphate B. borax C. sodium thiosulphate (Answer) D. ammonium sulphate
Last Answer : C. sodium thiosulphate (Answer)
Description : Chemical name of Grignard reagent is (A) Sodium thiosulphate (B) Ethyl magnesium chloride (C) Sodium sulphite (D) Sodium bicarbonate
Last Answer : (B) Ethyl magnesium chloride
Description : . Chemical name of soda ash is (A) Sodium bicarbonate (B) Sodium thiosulphate (C) Potassium carbonate (D) None of these
Last Answer : (D) None of these
Description : __________ Nature of hypo (sodium thiosulphate) makes it useful in photography. (A) Oxidising (B) Reducing (C) Complex forming (D) Photochemical
Last Answer : (C) Complex forming
Description : The most commonly used chemical for de-chlorination of water, is (A) Sodium thiosulphate (B) Sodium bisulphate (C) Sodium sulphite (D) Sulphur-dioxide
Last Answer : (C) Sodium sulphite
Description : With respect to calibration of uv-vis spectrophotometer, which of the following material is used to evaluate the ‘control of absorbance’ A. Sodium thiosulphate B. Potassium dichromate C. Holmium oxide D. Potassium permanganate
Last Answer : B. Potassium dichromate
Description : Which of the following drug can result in result in cyanide poisoning? A. Amyl nitrite B. Hydroxycobalamine C. Sodium nitroprusside D. Sodium thiosulphate
Last Answer : C. Sodium nitroprusside
Description : Which one of the following is used as a food preservative ? (1) Sodium benzoate (2) Sodium thiosulphate (3) Sodium hydroxide (4) Sodium bicarbonate
Last Answer : Sodium benzoate
Description : Silver is displaced when zinc is added to aqueous sodium argento cyanideThis method of extracting silver is an example for
Last Answer : Silver is displaced when zinc is added to aqueous sodium argento cyanideThis method of extracting ... Hydro metallurgy C. Pyrometallurgy D. Liquition
Description : What is the name and chemical formula of the main product formed by heating baking soda. (a) sodium carbonate,Na 2 CO 3 (b) Bleaching powder ,CaOCl 2 (c) sodium chloride,Na Cl (d)Plaster of paris ,CaSO 4 .I/2H 2 O
Last Answer : (a) sodium carbonate,Na 2 CO 3
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
Description : Photographic plates are covered with black paper because (a) the cellulose acetate of the paper must remain fresh (b) sunlight is easily absorbed by black paper and it helps develop the film ... paper prevents contact with light (d) the conversion of silver bromide to metallic silver is essential
Description : Which of the following has highest solubility in ionic solvent? (a) Silver iodide (b) Silver bromide (c) Silver chloride (d) Silver fluoride
Last Answer : Ans:(d)
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.
Description : Chemical that is used in photography - (1) Copper sulphate (2) Silver bromide (3) Magnesium sulphate (4) None
Last Answer : (2) Silver bromide Explanation: Silver bromide (AgBr) is a soft pale-yellow, water insoluble salt well for its unusual sensitivity to light. This property has allowed silver halides to become the basis of modern photographic materials.
Description : Silver acetate reacts with Br2 to form methyl bromide, carbon dioxide, and AgBr. This is an example of (a) Wurtz reaction (b) Etard's reaction (c) Hunsdiecker reaction (d) Perkin reaction
Last Answer : Hunsdiecker reaction
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
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
Description : Choose the correct statement(s) about ipratropium bromide: A. It preferentially dilates peripheral bronchioles B. It produces additional bronchodilatation when added to nebulized salbutamol C. As metered dose inhaler it is used for terminating asthma attacks D. Both 'B' and 'C'
Last Answer : B. It produces additional bronchodilatation when added to nebulized salbutamol
Description : Silver nitrate solution when added to a colorless aqueous solution E forms a white precipitate which dissolves in excess of E. If the white precipitat
Last Answer : Silver nitrate solution when added to a colorless aqueous solution E forms a white precipitate which dissolves in excess ... SO_(3)` D. `Na_(2)SO_(4)`
Description : Shravani was performing inorganic qualitative analysis of a salt. To an aqueous solution of that salt, she added silver nitrate.
Last Answer : Shravani was performing inorganic qualitative analysis of a salt. To an aqueous solution ... observations and write the chemical reactions involved.
Description : What happens when? a) A cleaned iron plate or iron nail is kept in 10g of copper sulphate solution. b) A pinch of mercuric oxide is kept in a test tube. c)A small crystal of silver nitrate is dissolved in distilled water and a drop of ammonium hydroxide & a pinch of glucose powder are added.
Last Answer : a) A cleaned iron plate or iron nail is kept in 10g of copper sulphate solution. After a few hours a coating of copper is seen on iron nail/plate. It is based on displacement reaction. ... on the inner walls of the test tube. Aldehyde group in glucose reduced silver nitrate to metallic silver.
Description : What product is formed when electricity is passed throughan aqueous solution of sodium chloride? (1) Sodium and water (2) Sodium oxide (3) Sodium and chlorine (4) Sodium hydroxide
Last Answer : (4) Sodium hydroxide Explanation: When electricity is passed through an aqueous solution of sodium chloride, it gives hydrogen, chlorine and sodium hydroxide as a product.