Description : Mention the properties of carbon
Last Answer : Carbon is a non-metal It is the first member of group 14 of periodic table. Its valency is four.
Description : Mention the physical properties of methane.
Last Answer : a) Methane is colourless, odourless gas. b) It is lighter than air. c) It is slightly soluble in water and favourable soluble in organic solvents like alcohol and ether.
Description : Mention the properties of carbon.
Description : What is clay? Mention its properties.
Last Answer : Clay is complex mixture of silicates. It is a naturally occurring thermally setting substance. Clay can be moulded to any desired shape. It becomes hard and brittle on heating but it retains it shape.
Description : Mention the properties of glass.
Last Answer : a) Glass is chemical resistant. Glass container can hold aquaregia. b) It has smooth and shining surface. It can be polished. c) It can be moulded into different shapes. d) It can be ... It can be sketched to produce designs. g) Properties of glass can be altered suitably by including additives.
Description : Mention three properties of mica. -SST 10th
Last Answer : (i) Mica is a mineral made up of a series of plates or leaves. (ii) It splits easily into thin sheets. These sheets can be so thin that a thousand can be layered into ... properties and resistance to high voltage, mica is considered an important mineral used in electric and electronic industries.
Description : Mention some of the properties of Red Soil. -SST 10th
Last Answer : (i) Red Soils are formed in situ by weathering of the ancient crystalline and metamorphic rocks. (ii) They are rich in iron content, hence, they are red in colour. (iii) The productivity of the ... not retentive to moisture. (v) They are suited for dry farming as it does not require much moisture.
Description : Mention the properties of oil used in transformers.
Last Answer : The following are the desirable properties of transformer oil: -->It should be free from moisture --> It should have high dielectric strength --> It should have thermally stability and higher thermal conductivity -->It should be contaminated by temperature rise.
Description : What are colligative properties? Mention them.
Last Answer : Ans:-these are the colligative properties. (a) Osmotic pressure (b) Relative lowering of vapour pressure (b) Elevation in B.P (d) Depression in F.P
Description : Mention the important properties of relay contacts.
Last Answer : a. Should be robust in construction. b. Self-cleaning (oxides easily breakdown). c. Corrosion resistant. d. Bounces free and striction free (low contact resistance). e. Able to carry rated continuous current and short time rated current.
Description : Mention the properties of transformer oil.
Last Answer : Properties of transformer oil are, a) Colour – pale yellow. b) Moisture content -
Description : State the functions of a fuse. Mention the desirable properties of fuse materials.
Last Answer : Ans: Fuse is a protective device, which consists of a thin wire or strip. This wire or strip is placed with the circuit it has to protect, so that the circuit-current flows through it. When ... silver and silver alloys are used of lower ratings. Copper alloys are used in fuses of higher ratings.
Description : 1. By which algae is Nitrogen fixation done? 2. Which post does the Constitution of India not mention? 3. When do all the magnetic materials lose their magnetic properties? 4. Why are the ... belongs to which mountains? 20. During the reign of emperor was the artillery most perfect and numerous?
Last Answer : Answer : 1. Blue-green algae 2. The Deputy Prime Minister 3. Strongly heated 4. For inland navigation 5. Alberuni 6. 5th June 7. Manipur 8. Analogous organs 9. Oxbow lake 10. Vallabhacharya 11 ... 17. Due to presence of Bacteriophages 18. As a Union of States 19. Fold mountains 20. Aurangzeb
Description : What chemical/physical properties help compare fuels in combustion engines? and how to apply them.
Last Answer : The ratings for fuel energy, flame propagation, combustion speed are based on comparison with octane in gasoline and pentane or cetane (depending on the applicatton) for diesel or jet fuel.. ... are many textbooks on petroleum technology, the Wiki article and references give a good starting point.
Description : The members of a homologous series have (a) The same physical properties (b) Different functional groups (c) The same chemical properties (d) Different methods of preparation
Last Answer : Ans:(c)
Description : Consider the isotopes of carbon, C-12 and C-14. Would you place them in different slots because their atomic masses are different or would you place them in the same position because their chemical properties are the same?
Last Answer : Isotopes are not placed according to their atomic mass but they are all placed in the same position as they have the same atomic number.
Description : The atomic masses of three elements X, Y and Z having similar chemical properties are 7, 23 and 39 respectively. a) Calculate the average atomic mass of elements X and Z. b) How is the ... this example? d) Give another example of a set of elements which are classified according to this law.
Last Answer : a) The average atomic mass of X and Z = 7 39 2 46 2 23 b) The average atomic mass of X and Z is equal to the atomic mass of Y c) The law illustrated in this example is Dobereiner’s law of triads. d) Another example of Dobereiner’s law is Calcium, Strontium and Barium.
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 : 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 : Is there a chart out there that lists the chemical properties of common plants?
Last Answer : http://tinyurl.com/29ys5hb
Description : Classify minerals into two groups on the basis of chemical and physical properties and give one example of minerals of each group. -Geography
Last Answer : Minerals are classified on the basis of their physical properties and chemical properties such as: Metallic Minerals Metallic minerals are those that are rich in metals and a source to procure a variety of ... is rich in building stones i.e. sandstone, granite, marble, fuller's earth, and gypsum
Description : what All substances have characteristic properties. If one of these properties can be observed without changing the identity of the substance, it must be A. universal property. B. physical property. C. biological property. D. chemical property.?
Last Answer : B: Physical Property
Description : What are the properties of chemical change ?
Last Answer : Characteristics of chemical change are as follows: One or more new objects are created. The physical and chemical properties of objects change. A completely new molecule is formed by changing the ... cannot be easily restored to its former state. Absorption or emission of heat energy must occur.
Description : Compare chemical properties of metals and non-metals.
Last Answer : Compare chemical properties of metals and non-metals.
Description : Why the elements belonging to the same group do have similar chemical properties ?
Last Answer : Why the elements belonging to the same group do have similar chemical properties?
Description : What element has similar chemical properties to phosphorus?
Last Answer : Need answer
Description : What is a chemical properties of a chair?
Description : What happens to the chemical properties of substances during a chemical reaction?
Description : In a physical change some of the first physical properties of the substance may be altered and the chemical composite remains the same true or false?
Last Answer : The chemical composition is unchanged.
Description : Why do calcium and strontium have the same chemical properties?
Last Answer : Both are situated in the group 2 of the Periodic Table.
Description : What is the smallest particle of an element that contains all the chemical properties of that element?
Last Answer : An atom is the smallest particle of an element that retains all its chemical properties.
Description : Why does helium dose not react with other substances. dose this mean that helium has no chemical properties?
Last Answer : No, helium is unreactive and this is a chemical property !
Description : Why is melting wax a physical properties of flammability is a chemical property?
Last Answer : Melting is a physical property because the chemical composition remain unchanged.Flammability is a chemical property because involve a combustion reaction.
Description : What groups of elements should have very different chemical properties in the periodic table?
Last Answer : Feel Free to Answer
Description : What are non-examples of chemical properties?
Last Answer : chemical properties are to do with how it acts chemically-so:polar vs Non polarPH / Pkamelting point / boiling pointTherefore non-examples would be its molecular mass/ geometry /atomical structure... although some of these would surelycontribute to its chemical properties.
Description : What are some physical and chemical properties of the element neon?
Description : What are some Chemical properties for zinc sulfate?
Last Answer : What is the answer ?
Description : What kind of chemical properties are their while mixing iodine and aspirin?
Description : In a physical change some of the physical properties of the substance may be altered and the chemical composition?
Last Answer : In a physical change, the chemical composition of a substance is never changed.
Description : Helium (He), neon (Ne) and argon (Ar) are all colorless, odorless gases with low chemical reactivity. Based on the periodic table, which other element would also have those same properties?
Last Answer : Helium
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 : Consider the following statements: 1. Alluvial soil is rich in chemical properties and is capable of yielding Rabi and Kharif crops. 2. Black soil is suitable for cotton, groundnut. 3. Rabi crops are reaped in autumn after sowing in June. ... ] (a) 1, 2 and 3 (b) 1 and 2 (c) 2 and 3 (d) 1 and 3
Last Answer : Ans: (b)
Description : Optically active compounds are capable of (A) Different reactions (B) Rotating plane of polarized light (C) Showing same chemical properties (D) None of these
Last Answer : Answer : B
Description : Mutarotation refers to change in (A) pH (B) Optical rotation (C) Conductance (D) Chemical properties
Last Answer : B
Description : The chemical reaction at one time the rate of forward and backward reaction becomes equal that state is called Equilibrium state. In a chemical equilibrium, the following properties remain unchanged with time. Pressure, Temperature, density, color Pressure, Temperature, density, color
Last Answer : Who proposed law of mass action ?
Description : (3) the number of electrons orbiting around the nucleus Explanation: The chemical behavior of an atom is determined by the number of electrons on its outer shell. As for the chemical bonding properties of ... , and in what ratio atoms will bond to form the 20,000,000 different substances on Earth.
Last Answer : Methyl phenyl ether can be obtained by reacting - (1) phenolate ions and methyl iodide (2) methoxide ions and bromobenzene (3) methanol and phenol (4) bromobenzene and methyl bromide
Description : Chemical properties of isotopes – (1) must be same (2) must be different (3) need not be same (4) need not be different
Last Answer : (1) must be same Explanation: Isotopes of an element have similar chemical properties as they have the same number of electrons as an atom of that element. The electron arrangement is the same owing to same chemical properties. However, they have different numbers of neutrons, which
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.