What is the name given to an element that exists in two or more physical forms?

What is the name given to an element that exists in two or more physical forms?
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1 Answer

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ANSWER: ALLOTROPIC 
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The phenomenon by which the same element exists in the same physical state in different forms is known as?

Description : The phenomenon by which the same element exists in the same physical state in different forms is known as?

Last Answer : Allotropy

The existence of an element in two or more forms i the same physical phase is known as: w) allotropy x) diphasisty y) polyformation z) diatomic existence

Description : The existence of an element in two or more forms i the same physical phase is known as: w) allotropy x) diphasisty y) polyformation z) diatomic existence

Last Answer : ANSWER: W -- ALLOTROPY

In solution, glucose exists as _________(a) the open-chain form only (b) the cyclic hemiacetal form only (c) the cyclic acetal form only (d) an equilibrium mixture of the open-chain form and cyclic hemiacetal forms

Description : In solution, glucose exists as _________ (a) the open-chain form only (b) the cyclic hemiacetal form only (c) the cyclic acetal form only (d) an equilibrium mixture of the open-chain form and cyclic hemiacetal forms

Last Answer : an equilibrium mixture of the open-chain form and cyclic hemiacetal forms

Different forms of the same element with different physical appearances are known as?

Description : Different forms of the same element with different physical appearances are known as?

Last Answer : Allotropes Eg: Diamond; Graphite and Charcoal are the allotropes of Carbon

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 those of metals and nonmetals D Atoms of a given atomic number that have a specific number of neutrons E The different phases (solid, liquid or gas) of a substance

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 

Pick out the wrong statement. (A) Tin can be readily and very easily drawn into very fine wire (B) Tin can be severely cold worked without the necessity of annealing due to its low recrystallisation temperature (C) Tin exists in two allotropic forms

Description : Pick out the wrong statement. (A) Tin can be readily and very easily drawn into very fine wire (B) Tin can be severely cold worked without the necessity of annealing due to its low recrystallisation temperature (C) Tin exists in two allotropic forms

Last Answer : (A) Tin can be readily and very easily drawn into very fine wire

Assertion (A) Both rhombic and monoclinic sulphur exist as `S_(8)` but oxygen exists as `O_(2)`. Reason (R ) Oxygen forms `ppi-ppi` multiple bond due

Description : Assertion (A) Both rhombic and monoclinic sulphur exist as `S_(8)` but oxygen exists as `O_(2)`. Reason (R ) Oxygen forms `ppi-ppi` multiple bond due

Last Answer : Assertion (A) Both rhombic and monoclinic sulphur exist as `S_(8)` but oxygen exists as `O_ ... Statement-I is not correct and Statement-II is correct

Insulin exists in polymeric forms, for polymerization it requires (A) Calcium (B) Magnesium (C) Manganese (D) Zinc

Description : Insulin exists in polymeric forms, for polymerization it requires (A) Calcium (B) Magnesium (C) Manganese (D) Zinc

Last Answer : Answer : D

What is allotrope ? In what forms of cubic pattern, iron exists ?

Description : What is allotrope ? In what forms of cubic pattern, iron exists ?

Last Answer : Some elements exist in more than one crystalline form. Each form is known as “allotrope”. Iron exists in two forms of cubic pattern, namely body centered cubic (bcc) and face-centered cubic (fee).

What is allotrope ? In what forms of cubic pattern, iron exists ?

Description : What is allotrope ? In what forms of cubic pattern, iron exists ?

Last Answer : Some elements exist in more than one crystalline form. Each form is known as “allotrope”. Iron exists in two forms of cubic pattern, namely body centered cubic (bcc) and face-centered cubic (fee).

The only matter which exists in three forms (Solid; liquid; gas)?

Description : The only matter which exists in three forms (Solid; liquid; gas)?

Last Answer : Water

Titanium metal (A) Exists in three allotropic forms (B) Cannot be welded (C) Is used in oceanographic and space exploration applications (D) None of these

Description : Titanium metal (A) Exists in three allotropic forms (B) Cannot be welded (C) Is used in oceanographic and space exploration applications (D) None of these

Last Answer : (C) Is used in oceanographic and space exploration applications

What Is Allot Rope? In What Forms Of Cubic Pattern, Iron Exists?

Description : What Is Allot Rope? In What Forms Of Cubic Pattern, Iron Exists?

Last Answer : Some elements exist in more than one crystalline form. Each crystalline form is known as ‘allotrope’ of the element. Iron exists in two crystalline forms of cubic pattern, namely, bodycentered cubic (BCC) and face-centered cubic (FCC).

When a physical property such as charge exists in discrete "packets" rather than in continuous amounts, the property is said to be: w) discontinuous x) abrupt y) quantized z) noncontinuous

Description : When a physical property such as charge exists in discrete "packets" rather than in continuous amounts, the property is said to be: w) discontinuous x) abrupt y) quantized z) noncontinuous

Last Answer : ANSWER: Y -- QUANTIZED

How would I check if an XML element exists in PHP?

Description : How would I check if an XML element exists in PHP?

Last Answer : Wrap it in an if that checks for the existence first if($status->item(0)) { $eventStatus = $status->item(0)>getAttributeNode( value )->value; } and run from there, I haven't actually run your ... and does just about everything you'll want (then you can use the DOM stuff to fill in the blanks)

Which harmful element tobacoo exists in tobacoo ? -Do You Know?

Description : Which harmful element tobacoo exists in tobacoo ? -Do You Know?

Last Answer : answer:

Is there any shortcut to determine which version exists in which element ?

Last Answer : There are shortcut chemistry books. Price 280 rupees. If you want to take 0171369352 message (with name and address)

Which harmful element tobacoo exists in tobacoo?

Description : Which harmful element tobacoo exists in tobacoo?

Last Answer : Nicotine

Give reasons for the following observations: (a) The element carbon forms a very large number of compounds. (b) Air holes of a gas burner have to be adjusted when the heated vessels get blackened by the flame. (c) Use of synthetic detergents causes pollution of water. -Chemistry

Description : Give reasons for the following observations: (a) The element carbon forms a very large number of compounds. (b) Air holes of a gas burner have to be adjusted when the heated vessels get blackened by the flame. (c) Use of synthetic detergents causes pollution of water. -Chemistry

Last Answer : Answer. (a) Carbon forms large number of compounds since carbon is small in size and can form stable covalent bonds (catenation) and it shows tetravalency. (b) Air holes of gas burner are ... not get blackened. (c) Some synthetic detergents are non-biodegradable, therefore, cause pollution of water.

From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. (c) The element with smallest ionic radius. (d) The element with six electrons in the valence shell. (e) The element which is a liquid at room temperature. (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.

Description : From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. ( ... . (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.

Last Answer : Ans. (a). The element chlorine (Cl) has the highest negative electron gain enthalpy. (b). The element cesium (Cs) has lowest ionization enthalpy. (c). The element fluorine F has lowest atomic radius. (d ... zero group (or group 18). (g). The element carbon (C) forms the largest number of compounds.

The element I am thinking about has several interesting characteristics. It occupies the same column in the periodic table as lead. Resistors which are commonly found in electronic circuits are often made out of this element. In addition, in one of its forms, this element is one of the hardest substances on earth. What element am I thinking about?

Description : The element I am thinking about has several interesting characteristics. It occupies the same column in the periodic table as lead. Resistors which are commonly found in electronic circuits are often made out ... element is one of the hardest substances on earth. What element am I thinking about? 

Last Answer : ANSWER: CARBON

Which of the following is least acceptable in the light of the modern concept of education? Options: A) The personal and social adjustment of the child is a responsibility of the school must necessarily and legitimately assumed B) Despite the importance of its other responsibilities, the school exists primarily for the purpose of developing the intellectual and the academic atmosphere C) Prime consideration should be given to the development of sound attitudes and values D) Although the products of education are also of fundamental interests to educations, teachers are more generally directly involved in the methods and procedures by means of which these products are to be attained

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Last Answer : B) Despite the importance of its other responsibilities, the school exists primarily for the purpose of developing the intellectual and the academic atmosphere

Steady state one dimensional heat flow by conduction as given by Fourier's low does not assume that (A) There is no internal heat generation (B) Boundary surfaces are isothermal (C) Material is anisotropic (D) Constant temperature gradient exists

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In the given types of polarisation, which type exists in the semiconductor? a) Electronic b) Ionic c) Orientational d) Interfacial or space charge

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Given the following statements: S1: Every context-sensitive language L is recursive. S2: There exists a recursive language that is not context sensitive. Which statement is correct? (A) S1 is not correct and S2 is not correct. (B) S1 is not correct and S2 is correct. (C) S1 is correct and S2 is not correct. (D) S1 is correct and S2 is correct.

Description : Given the following statements: S1: Every context-sensitive language L is recursive. S2: There exists a recursive language that is not context sensitive. Which statement is correct? (A) S1 is not correct and S2 is ... (C) S1 is correct and S2 is not correct. (D) S1 is correct and S2 is correct.

Last Answer : (D) S1 is correct and S2 is correct. 

Which one of the following elements exists in liquid state at room temperature? (1) Mercury (2) Lead (3) Sodium (4) Calcium

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.

Which type of intermolecular forces exists among the following molecules? (a) H2S molecules (b) H2O (c) Cl2 and CCl4 (d) SiH4 (e) Helium (f) He atoms and HCl molecules

Description : Which type of intermolecular forces exists among the following molecules? (a) H2S molecules (b) H2O (c) Cl2 and CCl4 (d) SiH4 (e) Helium (f) He atoms and HCl molecules

Last Answer : Ans. (a) Dipole-Dipole interactions. (b)H-Bond. (c)Dispersion forces. (d)Dispersion forces. (e)Dispersion forces. (f)Induced dipole-dipole interactions.

When carboxylic acids and dicarboxylic acids have similar molecular weights, how do their melting points compare? (a) Carboxylic acids have greater melting points. (b) Dicarboxylic acids have greater melting points. (c) Both acids have similar melting points. (d) No consistent trend exists

Description : When carboxylic acids and dicarboxylic acids have similar molecular weights, how do their melting points compare? (a) Carboxylic acids have greater melting points. (b) Dicarboxylic acids have greater melting points. (c) Both acids have similar melting points. (d) No consistent trend exists

Last Answer : Dicarboxylic acids have greater melting points

How does the melting point of propane and ethane compare? (a) the melting point of propane is greater. (b) the melting point of ethane is greater. (c) the melting points are within 5°C of one another. (d) no relationship exists among these alkanes and their melting point

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Last Answer : the melting point of ethane is greater.

In quantum chemistry, a nodal surface: w) gives 99 percent contour surface for an orbital x) exists for a 1s orbital y) has quantum number l = 1 z) is an orbital surface on which the probability density is zero

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Last Answer : ANSWER: Z -- IS AN ORBITAL SURFACE ON WHICH THE PROBABILITY DENSITY IS ZERO 

________ dimension corresponds to two different states in the eight possible cloud forms. a) Physical location of data b) Ownership c) Security boundary d) None of the mentioned

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An element has the following numbers of electrons in its shells: 2-8-8-2. Which of the following is true? The element: w) is a nonmetal x) forms an ion with a charge of +2 y) can accept two electrons z) forms a negative ion

Description : An element has the following numbers of electrons in its shells: 2-8-8-2. Which of the following is true? The element: w) is a nonmetal x) forms an ion with a charge of +2 y) can accept two electrons z) forms a negative ion

Last Answer : ANSWER: X -- FORMS AN ION WITH A CHARGE OF +2

Which of the following generally cannot be done in qualitative studies conducted in the field? a. Getting informed consent b. Keeping participants from physical harm c. Maintaining consent forms d. Having full anonymity rather than just confidentiality

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Which element forms compounds with all others elements except except helium neon and argon?

Description : Which element forms compounds with all others elements except except helium neon and argon?

Last Answer : i believe the answer is flourine.

An element X forms an oxide X03.

Description : An element X forms an oxide X03.

Last Answer : 6

The second element which forms largest number of compounds?

Description : The second element which forms largest number of compounds?

Last Answer : Hydrogen

The element which forms largest number of compounds?

Description : The element which forms largest number of compounds?

Last Answer : Carbon

In which of the following forms is iron absorbed by plants? (a) Ferric (b) Ferrous (c) Free element (d) Both ferric and ferrous

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The covalent bonding of atoms forms a/an a. Molecule. b. Ion. c. Element. d. Isomer.

Description : The covalent bonding of atoms forms a/an a. Molecule. b. Ion. c. Element. d. Isomer.

Last Answer : a. Molecule.

Steels with high carbon equivalent have poor Weldability, because in these steels during welding (A) Carbon and other alloying elements get oxidised from the weld pool (B) Excessive ferrite forms in the heat affected zone leading to poor toughness of the weld (C) Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld (D) Segregation of carbon and other element occurs in the weld pool leading to poor properties of the weld

Description : Steels with high carbon equivalent have poor Weldability, because in these steels during welding (A) Carbon and other alloying elements get oxidised from the weld pool (B) Excessive ferrite forms in the ... of carbon and other element occurs in the weld pool leading to poor properties of the weld

Last Answer : (C) Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld

An element X forms an oxide X03

Description : An element X forms an oxide X03

Last Answer : 6

In which of the following forms is iron absorbed by plants ? (1) Ferric (2) Ferrous (3) Free element (4) Both ferric and ferrous

Description : In which of the following forms is iron absorbed by plants ? (1) Ferric (2) Ferrous (3) Free element (4) Both ferric and ferrous

Last Answer : (1) Ferric

What is the name given to the non-superimposable mirror image forms of chiral compounds? w) cis-trans x) enantiomers y) functional isomers z) diasteriomers

Description : What is the name given to the non-superimposable mirror image forms of chiral compounds? w) cis-trans x) enantiomers y) functional isomers z) diasteriomers

Last Answer : ANSWER: X -- ENANTIOMERS