Description : What is the chemical name of bleaching powder? A. Calcium Hypochlorite B. Calcium Chlorate C. Calcium Chloride D. Chlorine
Last Answer : ANSWER: A
Description : Chemical name of bleaching powder is (1) Calcium chlorate (2) Calcium hypochlorite (3) Calcium chloro hypochlorite (4) Calcium bi chloride
Last Answer : (2) Calcium hypochlorite Explanation: Calcium hypochlorite is a chemical compound with formula Ca(ClO)2. It is widely used for water treatment and as a bleaching agent. This chemical is considered to be relatively stable and has greater available chlorine than sodium hypochlorite.
Description : Glauber's salt is chemically (A) Calcium sulphate (B) Potassium sulphate (C) Potassium chlorate (D) None of these
Last Answer : (D) None of these
Description : Chemical name of bleaching powder is : (1) Calcium chlorate (2) Calcium hypochlorite (3) Calcium chloro hypochlorite (4) Calcium bi chloride
Last Answer : Calcium hypochlorite
Description : What is sodium chlorate heated?
Last Answer : The chemical equation is:2 NaClO3 = 2 NaCl + 3 O2
Description : How many moles of oxygen are produced by the decomposition of six moles of patassium chlorate?
Last Answer : Balanced equation: 2KClO3 --> 2KCl + 3O26 mol KClO3 = 3 x 2 mol KCl, so the number of moles O2 that can be produced by 6 mol KClO3 is:3 x 3 mol O2 = 9 mol O2.
Description : What is the newly formed lead compound in a reaction between lead (IV) sulfate and tin (II) chlorate?
Last Answer : Lead sulfate is not soluble in water.
Description : What is the formula for copper (ii) chlorate?
Last Answer : The formula for copper(II) chlorate is Cu(ClO3)2.
Description : How many moles of O2 are produced by the decomposition if 10 moles potassium chlorate 2KClO3- and 2KCl plus 3O2?
Last Answer : 15 moles of O2 are produced by the decomposition if 10 moles potassium chlorate 2 KClO3 and 2 KCl plus 3O2.
Description : Thiamin is oxidized to thiochrome in alkaline solution by (A) Potassium permanganate (B) Potassium ferricyanide (C) Potassium chlorate (D) Potassium dichromate
Last Answer : Answer : B
Description : Magnesium per chlorate is called Anhydrone {mg (ClO4)2}
Last Answer : Bleaching powder is obtained when cl2 is passes through. Dry Slake lime CaOCl2+H2OàCa (OH) 2+Cl2
Description : Which one of the following is a physical change? (a) Burning of coal (b) Burning of wood (c) Heating of a platinum crucible (d) Heating of potassium chlorate
Last Answer : Ans:(c)
Description : Molybdenum deficiency affects the activity of – (1) All of the given options (2) Chlorate reductase (3) Nitrogenase (4) Nitrate reductase
Last Answer : (4) Nitrate reductase Explanation: Numerous investigators have shown that nitrate nitrogen accumulates in higher plants and fungi which are deficient in molybdenum. In molybdenum-deficient plants grown in the ... in the decrease of free amino acids in the plants in comparison to normal plants.
Description : The chemical name for common salt - (1) Sodium chloride (2) Sodium hydroxide (3) Sodium chlorate (4) Potasium chloride
Last Answer : (1) Sodium chloride Explanation: Sodium chloride is also known common salt is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions.
Description : Commonly used electro-optic crystal for polarization modulation ∙ a. Lithium Niobate ∙ b. Tourmaline ∙ c. Sodium Chlorate ∙ d. Sphalerite
Last Answer : a. Lithium Niobate
Description : Microbial breakdown of phenoxy herbicides such as 2,4-D and MCPA is enhanced by addition of a). Nitrate b). Sulphate c). Phosphate d). Chlorate
Last Answer : c). Phosphate
Description : A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number? (1) C (2) S (3) H (4) Cl
Last Answer : Cl
Description : Oxygen has a valence number of -1 in: w) Sodium Peroxide x) Potassium Chlorate y) Water z) Sodium Hydroxide
Last Answer : ANSWER: W -- SODIUM PEROXIDE
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 : Molybdenum deficiency affects the activity of : (1) All of the given options (2) Chlorate reductase (3) Nitrogenase (4) Nitrate reductase
Last Answer : Nitrate reductase
Description : What two elements in the periodic table have properties in common with Calcium?
Last Answer : Be, Mg, Ca, Sr, Ba, Ra. All the elements in that column haveproperties similar to each other.
Description : what elements are in calcium nitrate?
Last Answer : Calcium nitrate - Ca(NO3)2- contain Ca, N and O.
Description : Elements, like calcium, located toward the top of a group have a high attraction for their valence electrons because they have a _?
Last Answer : small atomic radius.
Description : There are two elements calcium (atomic number 20) and argon (atomic number 18) The mass number of both the elements is 40. They are therefore known as (a) isotones (b) isochores (c) isobars (d) isotopes
Description : Which among the following elements increases the absorption of water and calcium in plants? (1) Manganese (2) Boron (3) Copper (4) Molybdenum
Last Answer : (2) Boron Explanation: Boron increases the absorption of water and calcium in the plants. It helps in the metabolic activities in plants. Boron is necessary in order for sugar to move through protoplasmic membranes.
Description : Which of the following elements has the lowest melting point? (1) Bromine (2) Zinc (3) Calcium (4) Lead
Last Answer : (1) Bromine Explanation: Bromine is a chemical element with symbol Br and atomic number 35. Thus, the melting and boiling points of bromine are intermediate between those of chlorine and iodine.
Description : Which one of the following elements exists in liquid state at room temperature? (1) Mercury (2) Lead (3) Sodium (4) Calcium
Last Answer : (1) Mercury Explanation: Mercury is a dense, silvery dblock element. It is the only metal that is liquid at standard conditions for temperature and pressure.
Description : Which one of the following elements shows variable equivalent mass? (1) Zinc (2) Silver (3) Calcium (4) Iron
Last Answer : (4) Iron
Description : Which of the following is true regarding Newland’s Law of Octaves? (1) It worked well with only lighter elements. (2) It was applicable only up to calcium. (3) Both are correct (4) Both are incorrect. (4)
Last Answer : (3) Both are correct Explanation: Both the statements are correct. Hence, option C is correct.
Description : Write the molecular formula for the oxide and sulphide of following elements. (a) Sodium (b) Calcium (c) Hydrogen
Last Answer : (a) Sodium oxide Na2O Sodium sulphide Na2S (b) Calcium oxide CaO Calcium sulphide CaS (c) Hydrogen oxide H2O Hydrogen sulphide H2S
Description : Which one of the following elements in plants is not remobilised? (a) Phosphorus (b) Calcium (c) Potassium (d) Sulphur
Last Answer : (b) Calcium
Description : Which of the following elements is a constituent of biotin? (a) Magnesium (b) Calcium (c) Phosphorus (d) Sulphur
Last Answer : (d) Sulphur
Description : Which of the following elements is responsible for maintaining turgor in cells? (a) Magnesium (b) Sodium (c) Potassium (d) Calcium
Last Answer : (c) Potassium
Description : About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and (a) sulphur and magnesium (b) magnesium and sodium (c) calcium and phosphorus (d) phosphorus and sulphur.
Last Answer : (d) phosphorus and sulphur.
Description : Which of the following elements is responsible for maintaining turgor in cells ? (1) Magnesium (2) Sodium (3) Potassium (4) Calcium
Last Answer : (3) Potassium
Description : Which of the following elements is not an alkaline earth metal? w) beryllium x) barium y) calcium z) rubidium
Last Answer : ANSWER: Z -- RUBIDIUM
Description : Which of the following elements would form a covalent bond with Bromine? w) Calcium x) Aluminum y) Oxygen z) Tin
Last Answer : ANSWER: Y -- OXYGEN
Description : Which of the following four elements has the largest atomic radius? Is it: w) strontium x) francium y) calcium z) bromine
Last Answer : ANSWER: X -- FRANCIUM
Description : Which among the following elements increases the absorption of water and calcium in plants ? (1) Manganese (2) Boron (3) Copper (4) Molybdenum
Last Answer : Boron
Description : The three elements most needed in common fertilisers are : (1) Sulphur, Phosphorous and Sodium (2) Nitrogen, Potassium and Phosphorous (3) Phosphorous, Sodium and Nitrogen (4) Calcium, Phosphorous and Potassium
Last Answer : Nitrogen, Potassium and Phosphorous