Description : What are transition elements? (1) Elements whose two outermost shells are incomplete (2) Elements which possess properties of both, metals and non-metals (3) They have eight electrons in the outermost shell (4) Elements whose three outermost shells are incomplete
Last Answer : (1) Elements whose two outermost shells are incomplete
Description : Which one of the following best defines the word allotropes ? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between ... a specific number of neutrons E The different phases (solid, liquid or gas) of a substance
Last Answer : A Different structural forms of an element
Description : Metals, in general are of low strength and do not possess required physio-chemical and technological properties for a definite purpose. Alloys are therefore more than metals alone. Discuss the arrangement of atoms and Structures of alloys.
Last Answer : Alloys are produced by melting or sintering two ore more metals, or metals and a non-metal, together. Alloys possess typical properties inherent in the metallic state. The chemical elements ... an alloy are its individual portions, each having a single structure with its characteristic features.
Description : Elements that show the properties of both metals and non-metals are called (a) Allotropes (b) Metalloids (c) Alloys (d) Colloids
Last Answer : Ans:(b)
Description : Elements showing properties of both met- als and non-metals are?
Last Answer : Metalloids
Description : Metalloids (A) Are good conductor of heat & electricity (B) Act as electron donors with metals & as electron acceptor with non metals (C) Are not necessarily solids at room temperature ... & non-metallic properties to some extent and are exemplified by elements like germanium, silicon & boron
Last Answer : D) Are compounds that exhibit both metallic & non-metallic properties to some extent and are exemplified by elements like germanium, silicon & boron
Description : Physical properties of Non-Metals
Last Answer : Physical properties of Non-Metals: 1.Non-Metals are non-lustrous except Iodine. 2.Non-Metals are not ductile nor malleable. 3.Non-Metals are bad conductor of heat & electricity. 4.Non-Metals either ... Metals are generally brittle. 6.Non-metals are not strong. 7.Non-Metals have low tensile strength.
Description : Audio geeks can you distinctively tell the difference between recording at 24 bit/44 kHz as opposed to 24 bit/96 kHz and 192 kHz?
Last Answer : answer:of course I can. Take any higher quality recording you have and resample it with one of the many audio tools to the sampling rates you list or more. Realplayer has a conversion tool. Put on some ... play it out a reasonable audio system. Take a blind sound test then to have fun if you want.
Description : Which of the following statements about the physical properties of metal is not correct? (a) All metals are solid except mercury (b) Most metals are hard except sodium and potassium (c) Metals are not malleable (d) Most metals are ductile
Last Answer : Ans:(c)
Description : Physical properties of Metals
Last Answer : Physical properties of Metals: 1. Metals have lustre. 2. Metals are malleable and ductile. 3. Metals are Good conductors of heat & Electricity. 4. Metals are solids at Room temperature except Mercury ... strong. 7. Metals have high tensile strengths. 8. Metals have high melting and boiling points.
Description : What is a type of element who's physical properties are generally apposite of that of metals?
Last Answer : Need answer
Description : Give reason: Even though silicon is a non-metal it resembles metals in its properties.
Last Answer : When red hot silicon reacts with steam, it liberates hydrogen. Even when metals like hot iron, zinc or magnesium react with steam, they liberate hydrogen with their respective metal oxides. Hence silicon resembles metals in some properties.
Description : Chemical properties of Non-Metals
Last Answer : Chemical properties of Non-Metals: 1. Non-Metals form electronegative ions in a reaction. 2. Non-Metals react with water to form acidic oxides. 3. Non-Metals react with non-metals to form ionic ... reacts with acids to form salt and Hydrogen. 5. Metals are oxidizing agents as they accept electrons.
Description : Hormone receptors possess all the following properties except (A) All of them are proteins (B) They possess a recognition domain (C) They bind hormones with a high degree of specificity (D) Number of receptors in a target cell is constant
Last Answer : Answer : D
Description : Bence-Jones proteins possess all the following properties except (A) They are dimers of light chains (B) Their amino acids sequences are identical (C) Their N-terminal halves have variable amino acid sequences (D) Their C-terminal halves have constant amino acid sequences
Last Answer : Answer : B
Description : Ceramic materials possess which of the following properties? a) Brittle and low dielectric constant b) Rigid and low dielectric constant c) Brittle and high dielectric constant d) Rigid and high dielectric constant
Last Answer : c) Brittle and high dielectric constant
Description : Practical fluids (A) Are viscous (B) Possess surface tension (C) Are compressible (D) Possess all the above properties
Last Answer : Answer: Option D
Description : The plastics made from cellulose resin (A) Are as clear as glass (B) Are tough and strong (C) Possess excellent electrical properties (D) All the above
Description : Ferrite devices are useful in microwave applications because they possess what properties?
Last Answer : Magnetic properties and high resistance
Description : The conventional H1 antihistaminics possess the following additional properties except: A. Local anaesthetic B. Vasopressor C. Antiarrhythmic D. Catecholamine potentiating
Last Answer : B. Vasopressor
Description : Compare chemical properties of metals and non-metals.
Last Answer : Compare chemical properties of metals and non-metals.
Description : What are the chemical properties of metals & non-metals?
Last Answer : metals electropositive, basicity, hard, ductile, malleable, sonorous nonmetals electronegative, acidic, brittle, and not all the other three properties.
Description : Which of the following properties is generally found, in non-metals?' (1) Brittleness (2) Conductivity (3) Ductility (4) Malleability
Last Answer : (1) Brittleness Explanation: An important physical property of non metals is that they are brittle and hence cannot be beaten into sheets or drawn into wires. In other words, non-metals are non-malleable and non-ductile. Where stress is applied on nonmetals, they shatter into pieces.
Description : Which of the following are properties is generally found in non-metals
Last Answer : Brittleness
Description : Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the __________ stress. (A) Ultimate (B) Yield point (C) Proof (D) None of these
Last Answer : (C) Proof
Description : Law of octaves says that if the chemical elements are arranged according to increasing atomic weight, those with similar physical and chemical properties occur after each interval of elements
Last Answer : 7
Description : Who Classified Elements as Metals and non-metals?
Last Answer : Lavoisier
Description : List the elements of 15 th group of the periodic table. Name the distinct metals and non-metals of the group.
Last Answer : Nitrogen and phosphorous are non-metals. Arsenic and Antimony are metalloids, Bismuth is a metal.
Description : What is the name of those elements which divide metals and non-metals in the periodic table?
Description : Give reason: Classification of elements as metals and non-metals is justified but not satisfactory.
Last Answer : Classification of elements as metals and non-metals is justified because there are more common characteristics in both the groups but it is not satisfactory because each metal or non-metal have completely different properties.
Description : Hot conc. `H_(2)SO_(4)` acts as moderately strong oxidising agent. It oxidises both metals and non-metals. Which of the following elements is oxidised
Last Answer : Hot conc. `H_(2)SO_(4)` acts as moderately strong oxidising agent. It oxidises both metals and non-metals. Which ... products ? A. Cu B. S C. C D. Zn
Description : Which is not a type of elements? (1) Metals (2) Non Metals (3) Metalloids (4) Gases
Last Answer : (3) Metalloids Explanation: Element is a chemical substance consisting of atoms having the same number of protons in their atomic nuclei. There are 118 elements that have been identified. The elements classified as metalloids are boron, silicon, germanium, arsenic, antimony, tellurium and polonium.
Description : In known elements, the maximum number is of [CPMT 1985] (A) Metals (B) Non-metals (C) Metalloids (D) None of these
Last Answer : (A) Metals
Description : The lanthanide series elements are also known as: w) rare earth elements x) non-metals y) fifth period elements z) sixth period elements
Last Answer : ANSWER: W -- RARE EARTH ELEMENTS
Description : Which of the following physical characteristics does a wound-rotor induction motor possess that a squirrel cage motor does not? A. Slip rings B. End rings C. A centrifugal switch D. End plates
Last Answer : Answer: A
Description : Pick out the correct statement. (A) A fat is converted into oil by its hydrogenation (B) There is no difference between a fat and an oil so far as its physical properties are ... Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their fatty acids content
Last Answer : (C) All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon atoms
Description : How are the properties of alloys different from those of metals?
Last Answer : Copper is reddish and zinc is grayish in colour where as brass which is an alloy of copper and zinc is golden yellow in colour. Iron is a magnetic substance but stainless steel, an alloy of iron is non magnetic.
Description : Chemical properties of Metals
Last Answer : Chemical properties of Metals: 1. Metals form electropositive ions in a reaction. 2. Metals react with air to form basic oxides. 3. Metals react with water to evolve hydrogen. 4. Metals reacts with acids to form salt and Hydrogen. 5. Metals are reducing agents as they donate electrons.
Description : What are examples of the electronic properties of metals?
Last Answer : This can be an element, compound, or alloy. (Mix of two metals to get new properties). Examples are a good conductor of electricity, high density, and ductility. Most elements are metals above certain measures.
Description : Refining process of impure metals depends upon the differences in properties of the metal. Extraction of Al is usually carried out from its bauxite or
Last Answer : Refining process of impure metals depends upon the differences in properties of the metal. ... . leaching C. liquation D. magnetic seperation
Last Answer : Refining process of impure metals depends upon the differences in properties of the metal. Extraction of Al is usually ... A D. I-D,II-A,III-C,IV-B
Description : How do you Compare the properties or metals and no metals?
Description : What are the properties that make metals suitable for coins?
Last Answer : Almost any metal is suitable for coins. But from a practicalpoint of view, metals should be fairly hard, so that the imprintdoesn't fade too quickly and it shouldn't be too light since mostpeople like their coins to have a little 'weight', certainly if acoin represents a certain value.
Description : Babbitt metals used for making bearings are (A) Tin or lead based alloys (B) Short of antifrictional properties (C) Having homogenous microstructure (D) Yellow metals
Last Answer : (A) Tin or lead based alloys
Description : Beryllium, the first member of the Group 2 metals, shows different behaviour as compared to magnesium and rest of the members what is this properties
Last Answer : Ans Anomalous Behaviour
Description : Refractory metals are known for which of the following properties: w) lack of chemical reactivity x) low density y) high melting point z) high thermal conductivity
Last Answer : ANSWER: Y -- HIGH MELTING POINT
Description : Which of the following non-metal possess highest atomicity.
Last Answer : Which of the following non-metal possess highest atomicity. A. Oxygen B. Sulphur C. Phosphorus D. Nitrogen
Description : Which of the following plamids do not possess information for self transfer to another cell? A- Cryptic plasmids B- Conjugative plasmids C- Non-conjugative plasmids D- None of these
Last Answer : Non-conjugative plasmids