Description : The element which forms largest number of compounds?
Last Answer : Carbon
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.
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.
Description : Which element forms compounds with all others elements except except helium neon and argon?
Last Answer : i believe the answer is flourine.
Description : Carbon forms larger number of compounds because it has
Last Answer : Carbon forms larger number of compounds because it has A. low electron effinity B. variable valency C ... property D. no d-orbital in valency shell
Description : Which of the following forms maximum number of compounds ?
Last Answer : Which of the following forms maximum number of compounds ? A. Ne B. Kr C. Xe D. Rn
Description : Select the correct option (s) for the coordination compounds and their respectively isomeric forms.
Last Answer : Select the correct option (s) for the coordination compounds and their respectively isomeric forms.
Description : Which of the following compounds when heated with CO at 423K and 500 atm. Pressure in presence of `BF_(3)` forms ethyl propionate ?
Last Answer : Which of the following compounds when heated with CO at 423K and 500 atm. Pressure in presence of `BF_(3)` forms ... H_(5)` D. `CH_(3)OC_(2)H_(5)`
Description : Nitrogen forms a variety of compounds in all oxidation states ranging from - (1) -3 to + 5 (2) -3 to +3 (3) -3 to + 4 (4) -3 to +6
Last Answer : (1) -3 to + 5 Explanation: Nitrogen compounds are chemical compounds containing nitrogen ions. Nitrogen forms compounds with a wide range of oxidation states that range from -3 for the ... oxidation state compounds are strong oxidizing agents. -3 oxidation state compounds are weak reducing agents.
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
Description : Nitrogen forms a variety of compounds in all oxidation states ranging from (1) –3 to + 5 (2) –3 to + 3 (3) –3 to + 4 (4) –3 to + 6
Last Answer : –3 to + 5
Description : The greatest number of compounds are formed by the element (a) hydrogen (b) carbon (c) oxygen (d) nitrogen
Last Answer : Ans:(b)
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 : Which is the essential element in all organic compounds? -General Knowledge
Last Answer : The answer is 'Carbon'
Description : Which is an element which never exhibits positive oxidation state in any of its compounds? -Do You Know?
Last Answer : answer:
Description : What is the most used element in chemical compounds?
Last Answer : Need answer
Description : What are the key element found in all organic compounds?
Description : Which element under normal circumstances does not combine chemically with other elements to form compounds?
Last Answer : Examples are helium, neon, argon.
Description : Which of the following is an essential element used in the synthesis of proteins and other compounds? (1) Phosphorus (2) Iron (3) Magnesium (4) Nitrogen
Last Answer : (4) Nitrogen Explanation: Although all of the elements above are used by plants and taken up via the soil, nitrogen is especially essential and used specifically for the for the synthesis of proteins and other compounds.
Description : Which element found in all organic compounds? (1) carbon (2) nitrogen (3) calcium (4) none of them
Last Answer : (1) carbon Explanation: Carbon is found in all organic matter, but NOT in inorganic matter organic means chemical compounds with carbon in them. In a more general sense, organic refers to living things.
Description : Which is an element which never exhibits positive oxidation state in any of its compounds?
Last Answer : Fluorine
Description : Which is the essential element in all organic compounds?
Description : Plastics are compounds of carbon with element (A) Hydrogen (B) Nitrogen (C) Oxygen (D) All of thes
Last Answer : Answer: Option D
Description : Which of the following statements best describes a lead compound? a) A compound that contains the element lead b) A compound from the research laboratory that is chosen to go forward for preclinical and ... of a drug. d) The first compound of a structural class of compounds to reach the market.
Last Answer : c) A molecule that shows some activity or property of interest and serves as the starting point for the development of a drug.
Description : In which form is Silicon most frequently found in nature? w) The free element Silicon x) Silicon-Oxygen compounds y) Silicon-Carbon compounds z) Silicon-Metal compounds
Last Answer : ANSWER: X -- SILICON-OXYGEN COMPOUNDS
Description : What element is present in all organic compounds
Description : The general formula of a homologous series of carbon compounds is C n H 2n . Write the molecular formula of the second and fourth member of the series.
Last Answer : Second member is n=3, C 3 H 2x3 = C 3 H 6 Fourth member is n=5, C 5 H 2x5 = C 5 H 10
Description : Nitrogen forms the largest number of oxides as it is capable of forming stable multiple bonds with oxygen. They range from `N_(2)O` (O.S of nitrogen +
Last Answer : Nitrogen forms the largest number of oxides as it is capable of forming stable multiple bonds with ... red D. Nitrogen dioxide is not acidic oxide
Description : Nitrogen forms the largest number of oxides as it is capable of forming stable multiple bonds with oxygen. They range of `N_(2)O` (O.S of nitrogen +1)
Last Answer : Nitrogen forms the largest number of oxides as it is capable of forming stable multiple bonds with oxygen. They range ... C. `NO_(2)` D. both A and C
Description : The phenomenon by which the same element exists in the same physical state in different forms is known as?
Last Answer : Allotropy
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
Description : An element X forms an oxide X03.
Last Answer : 6
Description : In which of the following forms is iron absorbed by plants? (a) Ferric (b) Ferrous (c) Free element (d) Both ferric and ferrous
Last Answer : a) Ferric
Description : The covalent bonding of atoms forms a/an a. Molecule. b. Ion. c. Element. d. Isomer.
Last Answer : a. Molecule.
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
Description : An element X forms an oxide X03
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
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
Description : What is the name given to an element that exists in two or more physical forms?
Last Answer : ANSWER: ALLOTROPIC
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
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
Description : How do the lipids differ from the other organic compounds? a. They are the largest organic compounds. b. They are nonpolar compounds. c. They have no biological role. d. They are not used for energy storage.
Last Answer : b. They are nonpolar compounds.
Description : Which one of the following pairs is not correctly matched? (1) Languages : Eighth Schedule (2) The forms of oaths or affirmations: Second Schedule (3) Allocation of seats in the Council of States - Fourth Schedule (4) Provisions as to disqualification on the ground of defection - Tenth Schedule
Last Answer : (2) The forms of oaths or affirmations: Second Schedule Explanation: Forms of Oaths and Affirmations are the subject of Third Schedule. Salary of President, Governors, Chief Judges, Judges of High Court and Supreme Court, Comptroller and Auditor General are the subject of Second Schedule.