Description : Human bone does not contain-----? A. Calcium B. Chondroitin sulfate C. Boron (Answer) D. phosphate
Last Answer : C. Boron (Answer)
Description : Which of the following is not a feature of potable water? a) It must be clean, colourless and odourless. b) It must be free from bacteria c) It must have excessive sodium ,calcium and magnesium d) It must contain dissolved oxygen and carbon dioxide
Last Answer : c) It must have excessive sodium ,calcium and magnesium
Description : Organic chemistry involves molecules that contain which element? a. carbon c. oxygen b. nitrogen d. calcium
Last Answer : a. carbon
Description : Which of the following statements is not valid for oxoacids of phosphorus? (1) All oxoacids contain atleast one P = O unit and one P – OH group (2) . (3) Hypophosphorous acid is a diprotic acid. (4) All oxoacids contain tetrahedral four coordinated phosphorous
Last Answer : Orthophosphoric acid is used in the manufacture of triple superphosphate.
Description : Renal ricket is caused by renal tubular defect (usually inherited) which interferes with reabsorption of (A) Calcium (B) Phosphorous (C) Sodium (D) Chloride
Last Answer : Answer : B
Description : A high concentration of PTH in blood causes (A) Increase in plasma calcium and inorganic phosphorous (B) Decrease in plasma calcium and inorganic phosphorous (C) Increase in plasma calcium ... in plasma inorganic phosphorous (D) Decrease in plasma calcium and increase in plasma inorganic phosphorous
Last Answer : Answer : C
Description : The characteristic of hyperparathyroidism is (A) Low serum calcium (B) High serum phosphorous (C) Low serum calcium and high serum phosphorous (D) High serum calcium and low serum phosphate
Last Answer : Answer : D
Description : Calcitonin causes (A) Calcinuria and phosphaturia (B) Decrease in urinary calcium (C) Decrease in urinary phosphorous (D) Increase in blood calcium level 212 MCQs IN BIOCHEMISTRY
Last Answer : Answer : A
Description : Absorption of phosphorous from diet is favoured by (A) Moderate amount of fat (B) Acidic environment (C) High calcium content (D) High phytic acid
Description : The product of serum calcium concentration (mg/dl) and serum inorganic phosphorous concentration (mg/dl) is decreased in (A) Rickets (B) Hypoparathyroidism (C) Hyperparathyroidism (D) Renal failure
Description : The product of serum calcium concentration (mg/dl) and serum inorganic phosphorous concentration (mg/dl) in children is about (A) 30 (B) 40 (C) 50 (D) 60
Description : The product of serum calcium concentration (mg/dl) and serum inorganic phosphorous concentration (mg/dl) in adults is about (A) 30 (B) 40 (C) 50 (D) 60
Description : An acquired siderosis-Bantu siderosis is due to (A) Foods cooked in iron pots (B) Diet high in phosphorous (C) Diet high in calcium (D) High fat diet
Description : In hypoparathyroidism (A) Plasma calcium and inorganic phosphorous are low (B) Plasma calcium and inorganic phosphorous are high (C) Plasma calcium is low and inorganic phosphorous high (D) Plasma calcium is high and inorganic phosphorous low
Description : Milk is a good source of all of the following except (A) Essential amino acids (B) Vitamin C (C) Galactose (D) Calcium and phosphorous
Description : The element which is rich in most leafy vegetables is (1) Phosphorous (2) Zinc (3) Iron (4) Calcium
Last Answer : (3) Iron Explanation: Green leafy vegetables are rich in iron as well as calcium. For example, Spinach is a dark, leafy green vegetable which is high in iron. One cup of cooked spinach ... of many proteins, including hemoglobin, which helps red blood cells deliver oxygen to all areas of the body
Description : Which chemical is used to ripen mangoes artificially? (1) Sulphur Dioxide (2) Nitrous Oxide (3) Calcium Carbide (4) Phosphorous
Last Answer : (3) Calcium Carbide Explanation: The chemical widely used for artificially ripening fruits is calcium carbide (CaC2). It is used to ripen about 80 per cent of mangoes in India.
Description : Which nutrient in fertiliser makes the plant stems stronger and increases branching? (A) Nitrogen (B) Phosphorous (C) Potassium (D) Calcium
Last Answer : (B) Phosphorous
Description : ction of calcium Fluorapatite with sulphuric acid produces (A) Ortho-phosphoric acid (B) Simple superphosphate (C) Triple superphosphate (D) Red phosphorous
Last Answer : (B) Simple superphosphate
Description : Pick out the wrong statement. (A) All the nitrogenous fertilisers are not soluble in water (B) A straight fertiliser contains only one nutrient (C) Calcium cyanamide is used as weed killer in onion fields (D) The phosphorous nutrient makes the plant stem stronger and increases its branches
Last Answer : (A) All the nitrogenous fertilisers are not soluble in water
Description : Reaction of Cresylic acid with __________ produces Tricresyl phosphate.. (A) Phosphorous pentoxide (B) Phosphorous oxychloride (C) Ammonium phosphate (D) Calcium phosphate
Last Answer : (B) Phosphorous oxychloride
Description : ________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant. (A) Calcium (B) Fluorine (C) Phosphorous (D) Sulphur
Last Answer : (B) Fluorine
Description : 6. __________ is a special constituent of chlorophyll without which photosynthesis is not possible. (A) Calcium (B) Nitrogen (C) Phosphorous (D) Hydrogen
Last Answer : Option B
Last Answer : Iron
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
Description : Why are Calcium Carbide (CaC 2 ), Carbon monoxide (CO), Carbon dioxide (CO 2 ), Hydrogen cyanide (HCN) and calcium carbonate (CaCO 3 ) classified as inorganic compounds through they contain carbon?
Last Answer : These compounds contain only one or two carbon atoms per formula unit and contain no carbon-carbon (C-C) bonds or carbon-hydrogen bonds. Hence they are classified as inorganic compounds.
Description : An organic compound contain 69% carbon and 4.8% hydrogen, the remaining being oxygen. Calculate the masses of carbon dioxide and water produced when 0.20g of this substance is subjected to complete combustion.
Last Answer : Calculation of mass of CO2 produced: Mass of compound =0.20g %C =12 x C 69=12*mass of CO2 formed*100/44*0.2 Mass of CO2 formed =69*44*.2/12*100 = 0.506g Similarly, % H =2* mass of H2Oformed*100/18* ... compound 4.8=2* mass of H2Oformed*100/18* 0.2 Mass of H2Oformed =4.8*18*0.2/2*100 =0.0864g
Description : A gaseous fuel in order to develop luminosity on burning, must contain (A) Carbon monoxide (B) Hydrocarbons (C) Hydrogen (D) Oxygen
Last Answer : (B) Hydrocarbons
Description : All proteins contain at least 5 specific elements. Four of them are carbon, oxygen, hydrogen, and nitrogen. What is the fifth element?
Last Answer : ANSWER: SULFUR
Description : What is the formula when calcium carbonate breaks down into carbon dioxide oxygen and calcium?
Last Answer : Need answer
Description : What is the name of the compounds formed when calcium carbon and oxygen are combined?
Last Answer : The chemical formula of calcium carbonate is CaCO3.
Description : What is the name of a compound containing calcium carbon and oxygen?
Last Answer : Calcium carbonate
Description : Cells are composed of A A. Carbon, hydrogen, nitrogen and oxygen B. Sodium, potassium, calcium and hydrogen C. Hydrogen, carbon, sodium, and potassium D. Nitrogen, oxygen, calcium and carbon
Last Answer : Carbon, hydrogen, nitrogen and oxygen
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 : Carbohydrates are composed of ____ and ____. a. carbon, water c. zinc, aluminum b. hydrogen, oxygen d. gold, calcium
Last Answer : a. carbon, water
Description : Which of the following materials are used in the manufacture of pig iron from iron ore? w) Limestone and carbon x) Calcium oxide and oxygen y) Chromium and nickel z) Oxygen and sulfur dioxide
Last Answer : ANSWER: W -- LIMESTONE AND CARBON
Description : Which of the following are alloying materials used the manufacture of stainless steel? w) Limestone and carbon x) Calcium oxide and oxygen y) Oxygen and sulfur dioxide z) Chromium and nickel
Last Answer : ANSWER: Z -- CHROMIUM AND NICKEL
Description : Which one of the following nonmetals shows allotropy in the liguid state? (1) Carbon (2) Sulphur (3) Phosphorous (4) Bromine
Last Answer : (2) Sulphur Explanation: Sulphur is a non-metal that shows allotropy in the liquid state. If sulphur is heated slowly the changes between the different forms can be observed. These changes are in the ... of cold water, plastic sulphur is formed. This is an elastic, rubber-like form of sulphur.
Description : Which of the following is the most important rubber compounding ingredient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness? (A) Phosphorous (B) Carbon black (C) Pine oil (D) Rosin
Last Answer : (B) Carbon black
Description : Which of the following exercises most powerful influence on the mechanical properties of steel? (A) Manganese (B) Carbon (C) Phosphorous (D) Silicon
Last Answer : (B) Carbon
Description : Polymorphism is not exhibited by (A) Carbon (B) Iron (C) Phosphorous (D) None of these
Last Answer : (D) None of these
Description : __________ is added in low carbon steel to raise its yield point. (A) Sulphur (B) Phosphorous (C) Silicon (D) Manganese
Last Answer : (D) Manganese
Description : __________ is required more for leafy crops. (A) Nitrogen (B) Phosphorous (C) Potassium (D) Carbon
Last Answer : (A) Nitrogen
Description : The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element. (A) Silicon (B) Carbon (C) Phosphorous (D) Chromium
Description : Silicon crystal can be converted to p-type semi-conductor by doping with (A) Phosphorous (B) Nitrogen (C) Carbon (D) Boron
Last Answer : Option D
Description : The non-metal used in batteries is a) phosphorous b)nitrogen c) carbon d)sulphur
Last Answer : c) carbon
Description : Which one of the following nonmetals shows allotropy in the liquid state? (1) Carbon (2) Sulphur (3) Phosphorous (4) Bromine
Last Answer : Sulphur
Description : Acid rain is caused due to pollution of atmosphere by (1) oxides of carbon and nitrogen (2) oxides of nitrogen and sulphur (3) oxides of nitrogen and phosphorous (4) None of these
Last Answer : oxides of nitrogen and sulphur
Description : What structure in the arm of a human is found to carry oxygen red blood cells and if so what do they also contain?