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
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
Description : The electrolyte in a lead-acid storage battery consists of distilled water and _____________. A. hydrogen chloride B. calcium chloride C. sulfuric acid D. muriatic acid
Last Answer : Answer: C
Description : Which compound is responsible for the rotten egg smell? w) sulfuric acid x) putrescine y) hydrogen sulfide z) sulfur dioxide
Last Answer : ANSWER: Y -- HYDROGEN SULFIDE (NOTE: putrescine is a real compounz)
Description : Which of the following substances would be the best choice to neutralize sulfuric acid? w) sodium hydroxide x) silicon dioxide y) copper metal z) phosphorus pentoxide
Last Answer : ANSWER: W -- SODIUM HYDROXIDE
Description : Which of the following is NOT an organic acid? w) butyric (pron: byu-TEER-ik) x) sulfuric y) acetic z) citric
Last Answer : ANSWER: X -- SULFURIC
Description : The action of concentrated sulfuric acid on sugar best described as: w) catalysis x) oxidation y) reduction z) dehydration
Last Answer : ANSWER: Z -- DEHYDRATION
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.
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 : Hydrochloric acid
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
Description : Nitric acid is made from air and water by the: w) Haber process x) Contact process y) Castner process z) Arc process
Last Answer : ANSWER: Z -- ARC PROCESS
Description : Which of the following reactions involve NEITHER oxidation nor reduction? w) burning antimony in chlorine x) decomposition of potassium chlorate y) reaction of sodium with water z) reaction of potassium hydroxide with nitric acid
Last Answer : ANSWER: Z -- REACTION OF POTASSIUM HYDROXIDE WITH NITRIC ACID
Description : Nutrasweet, the artificial sweetener, contains molecules in which of the following groups? w) carbohydrates x) lipids y) amino acids z) nucleic acids
Last Answer : ANSWER: C--AMINO ACIDS
Description : Which of the following choices are considered to be polymers of amino acids? Are they: w) nucleotides x) carbohydrates y) lipids z) proteins
Last Answer : ANSWER: Z -- PROTEINS
Description : Sulfuric acid aerosols from the eruption of Mt. Pinatubo reduced the rate of global warming last year. They also contributed to the record size of: w) acid rainfalls in Europe x) the anchovy catch off Peru y) the ozone hole over Antarctica z) fish kills in the Amazon River
Last Answer : ANSWER: Y -- THE OZONE HOLE OVER ANTARCTICA
Description : Which of the following is the most important chemically-active fluid involved in the formation of rocks? w) hydrochloric acid x) sulfuric acid y) water z) methane
Last Answer : ANSWER: Y -- WATER
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.
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.
Description : Benzaldehyde reacts with a mixture of concentrated sulfuric acid and nitric acid to give (a) p-Nitrobenzaldehyde (b) o-Nitrobenzaldehyde (c) p-Nitrobenzoic acid (d) m-Nitrobenzaldehyde
Last Answer : m-Nitrobenzaldehyde
Description : Which of the following chemical reactions does not lead to formation of a salt? w) Reaction of salts with acids. x) The reaction of base anhydrides with acid anhydrides. y) Action of water on oxides of nonmetals. z) Reaction of acid with base.
Last Answer : ANSWER: Y -- ACTION OF WATER ON OXIDES OF NONMETALS. (If water reacts with oxides of nonmetals, an acid is formed.)
Description : Hydrochloric acid is also known as - (1) Galic acid (2) Picric acid (3) Muriatic acid (4) Chloric acid
Last Answer : (3) Muriatic acid Explanation: Hydrochloric acid was historically called acidum sails, muriatic acid, and spirits of salt because it was produced from rock salt and green vitriol and later ... similar substances common salt and sulfuric acid. Hydrochloric acid is found naturally in gastric acid.
Description : Hydrochloric acid is also known as (1) Galic acid (2) Picric acid (3) Muriatic acid (4) Chloric acid
Last Answer : Muriatic 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.
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
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).
Last Answer : Sulphuric acid
Description : Mineral acids are also classified as: w) carboxyl acids x) inorganic acids y) non-electrolytic acids z) oxidation acids
Last Answer : ANSWER: X -- INORGANIC ACIDS
Description : Which of the following acids is in vinegar? w) benzoic x) formic y) malanoic z) acetic
Last Answer : ANSWER: Z -- ACETIC
Description : In what category may LIPASE (pron: lie-pase) be placed w) carbohydrates x) lipids y) enzymes z) nucleic acids
Last Answer : ANSWER: C--ENZYMES
Description : In which of the following class of substances would WAX be found? w) carbohydrates x) lipids y) proteins z) nucleic acids
Last Answer : ANSWER: LIPIDS
Description : Chemically, fats are esters of long carbon-chain acids and which of the following: w) ethanol x) glycerol y) ethylene glycol z) sodium hydroxide
Last Answer : ANSWER: X -- GLYCEROL
Description : Amphoteric substances: w) act as either bases or acids x) precipatate from aqueous solutions y) salt out of basic solutions z) form emulsions in oils
Last Answer : ANSWER: W -- ACT AS EITHER BASES OR ACIDS
Description : Acids react with bases to form which of the following? Do they form: w) salt and acidic anhydride x) water and basic anhydride y) basic anhydride and salt z) salt and water
Last Answer : ANSWER: D -- SALT AND WATER
Description : Which of the following is NOT a means of preparing carbon dioxide? w) burning coke in the absence of air x) combustion of methane y) heating certain normal carbonates z) action of acids on carbonates
Last Answer : ANSWER: W -- BURNING COKE IN THE ABSENCE OF AIR
Description : Hydrochloric acid is also known as (A) Oil of vitriol (B) Muriatic acid (C) Strong organic acid (D) Green acid
Last Answer : (B) Muriatic acid
Description : Which of the following medicine is not included in Nash’s trio of weakness. Options: 1) Carbo veg. 2) Arsenicum album 3) Muriatic acid 4) Cinchona
Last Answer : Correct Answer: 4) Cinchona
Description : Which acid is present in the stomach of humans? (1) sulphuric acid (2) hydrochloric acid (3) nitric acid (4) citric acid
Last Answer : (2) hydrochloric acid Explanation: Hydrochloric acid is naturally produced by cells in our bodies to help digest food in the stomach.
Description : Which one of the following statements is true regarding digestion and absorption of food in humans? (a) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions ... amylase in our mouth. (d) Oxyntic cells in our stomach secrete the proenzyme pepsinogen.
Last Answer : (a) Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na
Description : Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product? (a) Small intestine : Proteins Pepsin → ... Trypsin → Monoglycerides (d) Small intestine : Starch α-Amylase → Disaccharide (maltose)
Last Answer : (d) Small intestine : Starch α-Amylase → Disaccharide
Description : Acid rain contains high levels of _____? A. Oxalic acid B. Acetic acid C. Sulphuric and nitric acids D. Carbolic acid
Last Answer : ANSWER: C
Description : Waste gases from industrial plants form acids that hasten chemical weathering. Most of the gases are compounds of: w) argon x) hydrogen y) iron z) sulfur
Last Answer : ANSWER: Z -- SULFUR
Description : Which of the following statements are true of elevated-anion gap metabolic acidosis? A. Hypoperfusion from the shock state rarely produces an elevated anion gap. B. Retention of sulfuric and phosphoric ... E. Use of lactated Ringer's solution is inappropriate in the treatment of lactic acidosis.
Last Answer : Answer: BC DISCUSSION: An elevated anion gap may be produced by lactic acidosis from shock or by retention of inorganic acids from uremia. Lactated Ringer's solution rapidly corrects the ... . Bicarbonate loss from diarrhea and dilutional acidosis are non-anion gap types of metabolic acidosis
Description : In human and other ureotelic organisms, the end product of amino acid nitrogen metabolism: (A) Bile acids (B) Ketone bodies (C) Urea (D) Barium sulphate
Last Answer : Answer : C
Description : Complete hydrolysis of proteins produces : (a) Ammonia and carbon dioxide (b) Urea and uric acid (c) A mixture of amino acids (d) Glycogen and a fatty acid
Last Answer : A mixture of amino acids
Description : The α-carbon of all the amino acids is a chirality center except for __________. (a) Glycine (b) Threonine (c) Proline (d) Aspartic acid
Last Answer : Glycine
Description : Which of the following amino acids has a heterocyclic R group? (a) Glycine (b) Threonine (c) Proline (d) Aspartic acid
Last Answer : Proline
Description : Calcium carbonate is most soluble in: w) 0.2 Molar Sodium carbonate x) 0.1 Molar Calcium chloride y) 0.1 Molar Sodium hydroxide z) 0.1 Molar Hydrochloric acid
Last Answer : ANSWER: Z -- 0.1 MOLAR HYDROCHLORIC ACID
Description : If a material has the capacity to behave either as an acid or a base it is said to be: w) amorphous x) amphoteric y) anhydrous z) aklaline
Last Answer : ANSWER: X -- AMPHOTERIC
Description : Ionic substances dissolve in water to form: w) highly acid solutions x) electrolytic solutions y) colloids z) emulsions
Last Answer : ANSWER: X -- ELECTROLYTIC SOLUTIONS
Description : In the United States, Grain alcohol is made: w) from coal x) by fermenting starches y) from methanol z) from vinegar e) by fermenting acetic acid
Last Answer : ANSWER: X -- BY FERMENTING STARCHES