Description : The presence of which of the following salts in water causes corrosion in steam boilers? (1) Sodium Chloride (2) Magnesium Chloride (3) Calcium bicarbonate (4) Potassium bicarbonate
Last Answer : (2) Magnesium Chloride Explanation: Magnesium chloride is the name for the chemical compound with the formula MgCl2 and its various hydrates MgCl2(H2O)x. These salts are typical ionic halides, being highly soluble in water.
Description : Municipal water in India is generally treated with (a) Chlorine (b) Potassium permanganate (c) Sodium Chloride (d) Sodium Carbonate
Last Answer : Ans:(a)
Description : All the following statements about endemic goiter are true except (A) It occurs in areas where soil and water have low iodine content (B) It leads to enlargement of thyroid gland (C) It results ultimately in hyperthyroidism (D) It can be prevented by consumption of iodised salt
Last Answer : Answer : C
Description : Bleaching powder contains------? A. Nitrogen B. Iodine C. Chlorine (Answer) D. Bromine
Last Answer : C. Chlorine (Answer)
Description : 74.5 g of a metallic chloride contains 35.5 g of chlorine. The equivalent weight of the metal is [CPMT 1986] (A) 19.5 (B) 35.5 (C) 39.0 (D) 78.0
Last Answer : (C) 39.0
Description : common disinfectant used in village wells for disinfection of water is (A) Free chlorine (B) Bromine (C) Iodine (D) Potassium permanganat
Last Answer : Option D
Description : A common disinfectant used in village wells for disinfection of water is (A) Free chlorine (B) Bromine (C) Iodine (D) Potassium permanganate
Description : Iodine can be separated from a mixture of Iodine and Potassium Chloride by - (1) Filtration (2) Sublimation (3) Distillation (4) Sedimentation
Last Answer : (2) Sublimation Explanation: Iodine can be separated from a mixture of Iodine and Potassium Chloride by Sublimation. Sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.
Description : Which one of the following is used in the preparation of antiseptic solution? (1) Potassium nitrate (2) Iodine (3) Iodine chloride (4) Potassium chloride
Last Answer : (2) Iodine Explanation: Antiseptics are chemical agents that slow or stop the growth of micro-organisms (germs) on external surfaces of the body and help prevent infections.
Description : Iodine can be separated from a mixture of Iodine and Potassium Chloride by – (1) sedimentation (2) filtration (3) sublimation (4) distillation
Last Answer : (3) sublimation Explanation: Iodine is well known to sublime (change from solid to gas without becoming liquid in between) when heated. However sodium chloride has a melting point much higher ... by using a sublimation apparatus, with solid iodine collected by condensation on a cold surface.
Description : Which of the following substances would be expecte to have the highest melting point? w) Potassium Bromide x) Iodine y) Methane z) Hydrogen Chloride
Last Answer : ANSWER: W -- POTASSIUM BROMIDE
Description : Iodine can be separated from a mixture of Iodine and Potassium Chloride by (1) sedimentation (2) filtration (3) sublimation (4) distillation
Last Answer : sublimation
Description : The name of the common mineral salt present in sweat is ? A. Calcium Oxalate B. Potassium Sulphate C. Sodium Chloride (Answer) D. Iron Sulphate E. None of these
Last Answer : C. Sodium Chloride (Answer)
Description : The reactions of `CI_(2)` gas with cold-dilute and hot-concentrated NaOH in water give sodium salts of two different oxioacids of chlorine, P and Q, r
Last Answer : The reactions of `CI_(2)` gas with cold-dilute and hot-concentrated NaOH in water give sodium salts of ... `H_3PO_2` D. `SOCl_2 , PCl_5` and `H_3PO_5`
Last Answer : The reactions of `CI_(2)` gas with cold-dilute and hot-concentrated NaOH in water give ... porchloric acids D. (D) chloric and hypochlorus acids
Description : Goitre is caused by the deficiency of - (1) Iodine (2) Chlorine (3) Sodium (4) Calcium
Last Answer : (1) Iodine Explanation: A goitre or goiter is a swelling of the thyroid gland, which can lead to a swelling of the neck or larynx. (voice box). Goitre is a term that refers to ... considered a contributing factor. In countries that use iodized salt, Hashimoto's thyroiditis is the most common cause.
Description : Goitre is caused by the deficiency of (1) Iodine (2) Chlorine (3) Sodium (4) Calcium
Last Answer : Iodine
Description : Which of the following complications of TPN are appropriately managed with the listed treatment? a. Air embolism-place patient in reverse Trendelenburg and the left lateral decubitus position ... dioxide retention-decrease glucose calories and replace with fat d. Line sepsis-intravenous antibiotics
Last Answer : Answer: b, c A number of complications of TPN can occur which can be divided into three types: mechanical, metabolic, and infectious
Description : What are soaps? (1) Salts of silicates (2) Ester of heavy fatty acids (3) Sodium or potassium salts of heavier fatty acids (4) Mixture of glycerol and alcohol
Last Answer : (3) Sodium or potassium salts of heavier fatty acids
Description : Synthetic detergents are prepared from (1) potassium salts of higher fatty-acids (2) sodium salts of higher fat acids (3) hydrocarbons of petroleum (4) glycerides
Last Answer : (3) hydrocarbons of petroleum Explanation: Synthetic detergents are prepared from hydrocarbons of petroleum. They are sodium salts of long chain benzene sulphonic acids or sodium salts of long chain ... are soluble in water. Therefore cleansing action of detergents remains unaffected in hard water.
Description : . Sodium or potassium salts of fatty acids are called (a) Proteins (b) Terpenes (c) Carbohydrates (d) Soaps
Last Answer : Soaps
Description : The sodium/potassium pump is primarily responsible for the: a) resting potential b) action potential c) excretion of salts d) contraction of muscle fibers
Last Answer : ANSWER: A -- RESTING POTENTIAL
Description : Synthetic detergents are prepared from (1) potassium salts of higher fatty-acids (2) sodium salts of higher fattyacids (3) hydrocarbons of petroleum (4) glycerides
Last Answer : hydrocarbons of petroleum
Description : A student prepares aqueous solutions of the following salts: Copper sulphate, ferrous sulphate, sodium sulphate and barium chloride. Write the color of each solution thus formed?
Last Answer : Answer. Copper sulphate (aq) – blue in color Ferrous sulphate (aq) – pale green in color Sodium sulphate (aq) – colorless Barium chloride (aq) – white in color
Description : Which of the following is very reactive and kept in kerosene? (1) Sodium (2) Potassium (3) Iodine (4) Bromine
Last Answer : (1) Sodium Explanation: Sodium is a very reactive metal. It reacts vigorously with oxygen and water. A lot of heat is generated in this process. Therefore, it is stored in kerosene to avoid contacts between either atmospheric oxygen or water.
Description : Which of the following is essential for the synthesis of thyroxin? (1) Potassium (2) Sodium (3) Calcium (4) Iodine
Last Answer : (4) Iodine Explanation: Iodine is essential for the synthesis of Thyroxine, one of the two major hormones secreted by the thyroid gland. Thyroxine is formed by the molecular addition of iodine to the amino acid tyrosine while the latter is bound to the protein thyroglobulin.
Description : Which of the following is used to iodise common salt? (1) Potassium iodide (2) Iodine (3) Potassium iodate (4) Sodium iodide
Last Answer : (3) Potassium iodate Explanation: Iodized salt (also spelled iodised salt) is table salt mixed with a minute amount of various salts of the element iodine. Table salt with iodide salt slowly loses its ... salt can be iodised by spraying it with a potassium iodate solution. 60 ml of potassium iodate.
Last Answer : Sodium
Description : Which of the following is used to iodise common salf ? (1) Potassium iodide (2) Iodine (3) Potassium iodate (4) Sodium iodide
Last Answer : Potassium iodate
Description : The substance which conducts current in the solid state is – (1) diamond (2) graphite (3) iodine (4) sodium chloride
Last Answer : (2) graphite Explanation: The structure of graphite is unlike most other network substances. It is formed in 'sheets' of carbon atoms, each of which is bonded to only three others. The ... electric charges. Unlike diamond (another carbon allotrope), graphite is an electrical conductor, a. semimetal.
Description : In Artificial rain making process for cold cloud seeding — chemical is used. a. Silver iodine b. Sodium chloride c. Urea d. Calcium cyanamide
Last Answer : a. Silver iodine
Description : The substance which conducts current in the solid state is (1) diamond (2) graphite (3) iodine (4) sodium chloride
Last Answer : graphite
Description : Non-metallic character increases from (1) Magnesium to Barium (2) Potassium to Cesium (3) Oxygen to Selenium (4) Sodium to Chlorine
Last Answer : (4) Sodium to Chlorine Explanation: The elements which lose electrons to form cations are known as metals. Metallic character decreases across a period as we move from left to right.
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 : Write the balanced equation for the following chemical reactions. (i) Hydrogen + Chlorine → Hydrogen chloride (ii) Barium chloride + Aluminium sulphate → Barium sulphate + Aluminium chloride (iii) Sodium + Water → Sodium hydroxide + Hydrogen -Chemistry-10
Last Answer : (i) H2 + Cl2 → 2HCl (ii) 3 BaCl2 + Al2(SO4)3 → BaSO4 + 2 AlCl3 (iii) 2Na + 2H2O → 2NaOH + H2↑
Description : Will chlorine react with sodium chloride?
Last Answer : No.
Description : What mass of sodium chloride is produced if 92.0 g of sodium reacts with excess chlorine?
Last Answer : Sodium has an atomic weight of 22.99 g/mol. Chlorine has an atomic weight of 35.45 g/mol. NaCl has an atomic weight of 58.44 g/mol. Therefore 92g of sodium would yield 233.86g of sodium chloride (NaCl).
Description : A chlorine atom reacts with a sodium atom to form sodium chloride, NaCl. A chlorine atom can also react with another chlorine atom to form a chlorine molecule, Cl2. Which statement BEST explains the behavior of chlorine in these two reactions?
Last Answer : A chlorine atom can form ionic bonds by accepting an electron and covalent bonds by sharing electrons.
Description : Most commonly used bleaching agent is – (1) Sodium chloride (2) Alcohol (3) Carbon dioxide (4) Chlorine
Last Answer : (4) Chlorine Explanation: Chlorine is used to disinfect water and is part of the sanitation process for sewage and industrial waste. During the production of paper and cloth, it is used ... in water Bleaching powder is an important and a commonly used bleaching agent prepared from chlorine.
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.
Description : Write balanced chemical equations for the following word equations: (a) Iron + Chlorine → Iron (III) chloride (b) Magnesium + dil sulphuric acid → Magnesium sulphate + water (c) Magnesium + oxygen → ... oxide (d) Calcium oxide + water → Calcium hydroxide (e) Sodium + chlorine → Sodium chloride
Last Answer : (a) Iron + Chlorine → Iron (III) chloride 4Fe + 3Cl2 → 2F2Cl3 (b) Magnesium + dil sulphuric acid → Magnesium sulphate + water 2Mg + 2H2SO4 → 2MgSO4 + 2H2 (c) Magnesium + oxygen → Magnesium oxide 2Mg ... hydroxide CaO + H2O → Ca(OH)2 (e) Sodium + chlorine → Sodium chloride 2Na + Cl2 → 2NaCl
Description : __________ is obtained as a by-product in the manufacture of sodium hydroxide using brine. (A) Chlorine (B) Ammonium chloride (C) Sodium carbonate (D) Sodium bi-carbonate
Last Answer : (A) Chlorine
Description : Most commonly used bleaching agent is (1) Sodium chloride (2) Alcohol (3) Carbon dioxide (4) Chlorine
Last Answer : Chlorine
Description : The chemical name of table salt is (a) Potassium chloride (b) Sodium chloride (c) Calcium chloride (d) Sodium hyposulphate
Last Answer : Ans:(b)
Description : Sodium chloride, potassium chloride, magnesium oxide are examples of molecules with (a) Covalent bonding (b) Ionic bonding (c) Metallic bonding (d) Hydrogen bonding
Description : What's your opinion of, or experience with, potassium chloride as a salt (sodium chloride) substitute?
Last Answer : it’s still salt but may be better if you have blood pressure problems. It’s really going to come down to your personal taste.
Description : What are the differences and purposes of the different types of ice melt such as sodium chloride, potassium chloride, calcium chloride and blends?
Last Answer : Ice Melts are for minimal damage being substained by winter conditions to your lawn.
Description : Anion gap is the difference in the plasma concentrations of (A) (Chloride) – (Bicarbonate) (B) (Sodium) – (Chloride) (C) (Sodium + Potassium) – (Chloride + Bicarbonate) (D) (Sum of cations) – (Sum of anions)
Description : In Addison’s disease, there is excessive retention of (A) Potassium (B) Sodium (C) Chloride (D) Water
Last Answer : Answer : A