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 : Catenation is a property of the carbon atom which describes its ability to (a) bond with other carbon atoms (b) form double and triple bonds (c) exist in plant and animal form (d) form bonds in its ground state
Last Answer : bond with other carbon atoms
Description : What is the radius of an imaginary shell around an atom which determines how close two nonbonded atoms may approach each other called?
Last Answer : ANSWER: VAN DER WAALS RADIUS
Description : The number of protons of an atom of an element determines its?
Last Answer : Electrovalent bonds
Description : In glucose the orientation of the —H and —OH groups around the carbon atom 5 adjacent to the terminal primary alcohol carbon determines (A) D or L series (B) Dextro or levorotatory (C) α and β anomers (D) Epimers
Last Answer : A
Description : What determines the chemical activity of an atom?
Last Answer : The number of electrons in the valence shell.
Description : What determines the valence of an atom?
Last Answer : The number of electrons in the outer shell.
Description : In glucose the orientation of the —H and —OH groups around the carbon atom 5 adjacent to the terminal primary alcohol carbon determines (A) D or L series (B) Dextro or levorotatory (C) and anomers (D) Epimers
Last Answer : (A) D or L series
Description : What determines an element’s properties?
Last Answer : The valence electrons
Description : Which of the following determines the chemical properties of an element?
Last Answer : Number of electrons
Description : Penetration test determines the __________ of the grease. (A) Stiffness (B) Lubricating properties (e.g. oilness) (C) Service temperature (D) Variation in viscosity with temperature
Last Answer : (A) Stiffness
Description : The high reactivity of fluorine is due to (1) small size of fluorine atom (2) its high electro negativity (3) availability of d-orbitals (4) strong F - F bond
Last Answer : (2) its high electro negativity Explanation: The high reactivity of fluorine is due to its high electro negativity.
Description : Triethylamine [(CH3CH2)3N] is a molecule in which the nitrogen atom is __________ hybridized and the CNC bond angle is __________. (a) sp2; >109.5° (b) sp2; 109.5° (d) sp3;
Last Answer : sp3;
Description : The compound methylamine, H3C–NH2, contains a C–N bond. In this bond, which of the following best describes the charge on the nitrogen atom? (a) slightly positive (b) uncharged (c) slightly negative (d) –1
Last Answer : slightly negative
Description : Which of the following statements are correct concerning delocalized electrons? (a) Electrons do not belong to a single atom. (b) Electrons are not confined to a bond between two atoms (c) Electrons are shared by three or more atoms. (d) (a), (b) and (c)
Last Answer : (d) (a), (b) and (c)
Description : Which of the following species contains three bond pairs and one lone pair around the central atom? (1) PCl3 (2) H2O (3) BF3 (4) NH2
Last Answer : PCl3
Description : Which basic property determines a colored light's placement on the spectrum of visible light?
Last Answer : Most of the spectrum charts that I have seen are listed inwavelengths, particularly nanometers (nm). Where 1 nm = 1x10^-9m.
Description : What property of an objects determines how much inertia it has?
Last Answer : Its mass.
Description : Pick out the correct statement. (A) 1 kcal/hr.m.°C is equal to 1 BTU/hr. ft.°F (B) In steady state heat conduction, the only property of the substance which determines the ... in the direction of temperature rise (D) In heat transfer by forced convection, Grashoff number is very important
Last Answer : (B) In steady state heat conduction, the only property of the substance which determines the temperature distribution, is the thermal conductivity
Description : Choose the wrong statement (A) Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force (B) Viscosity is due primarily to interaction between fluid molecules (C) Viscosity of liquids decreases with increase in temperature (D) Viscosity of liquid
Last Answer : Answer: Option D
Description : When the repealer potential is constant, what property of the electron determines how long it will remain in the drift space of the reflex klystron?
Last Answer : Velocity.
Description : In which type of bond are one or more electrons transferred from one atom to another?
Last Answer : Need answer
Description : A colligative property depends on: w) chemical properties of particles in system x) physical properties of particles in system y) number of particles present in system z) all of the above
Last Answer : ANSWER: Y -- NUMBER OF PARTICLES PRESENT IN SYSTEM
Description : What The double bond between carbon atom and two oxygen atoms has two characteristics what are they?
Last Answer : Four valence electrons are shared.Valence electrons are shared between oxygen atoms.
Description : What kind of bond does a carbon atom make?
Last Answer : Carbon is a basic element.
Description : Which of the following species is non polar with presence of polar bond and lone pair of electron on central atom.
Last Answer : Which of the following species is non polar with presence of polar bond and lone pair of electron on central atom. A. ... 4)` C. `XeF_(4)` D. `CF_(4)`
Description : What happens to an atom of fluorine (F) when it forms an ionic bond in which it has the same electron configuration as the noble gas neon?
Last Answer : It accepts one electron.
Description : What is the maximun number of atoms that a carbon atom can bond with in an organic compoud?
Last Answer : Feel Free to Answer
Description : What kind of bond is formed when the attraction between the hydrogen atom in one water molecule and the oxygen molecule in another?
Description : If the bond angles at a carbon atom are 120 degrees how many groups are distributed around the carbon atom?
Description : The high reactivity of fluorine is due to (a) Its high electronegativity (b) Small size of flourine atom (c) Availability of d-orbitals (d) Strong F-F bond
Last Answer : Ans:(a)
Description : The energy released when an extra electron is added to a neutral gaseous atom is called (a) Bond energy (b) Electron affinity (c) Ionization potential (d) Electronegativity
Last Answer : Ans:(b)
Description : The bond formed by transferring elec- trons from an atom to another?
Last Answer : Ionic Bond
Description : The ability of an atom to accept the elec- trons during molecular bond formulation is known as?
Last Answer : Electro negativity
Description : The unsaturated hydrocarbons having double bond between carbon atom are
Last Answer : alkene.
Description : What are three physical properties of ionic compounds that are associated with ionic bonds and relate them to bond strength?
Last Answer : These are melting point, boiling point, hardness.
Description : What are properties of a covalent bond?
Last Answer : Simple covalent molecules tend to have low boiling and meltingpoints, as well as being quite brittle when solid.
Description : How is the periodicity of properties dependent upon the number of protons in an atom?
Last Answer : The number of protons is equal to atomic number. The periodicity of chemical properties depends on the outermost shell of electrons.
Description : The unique properties of carbon atom are
Last Answer : catenation, tetravalency and isomerism.
Description : The properties necessary to guarantee a reliable transaction in databases and other applications is referred to as _____________ a) BASE b) ACID c) ATOM d) All of the mentioned
Last Answer : ACID
Description : Consider the following statements: 1. Mercury metal exists as a liquid at room temperature. 2. The property of metals by which they can be beaten into thin sheets is called malleability 3. Neutral fats such as butter and vegetable oils ... b) 1, 3 and 4 only (c) 2, 3 and 4 only (d) 1, 2 and 3 only
Last Answer : Ans:(d)
Description : This scientist gave the law- ‘Properties of elements are a periodic function of their atomic number.’ This property of the fundamental importance of atomic number was discovered by- (1) Johann Wolfgang Döbereiner (2) John Newlands (3) Dmitri lvanovich Mendeléev (4) Henry Moseley
Last Answer : (4) Henry Moseley Explanation: In 1913, Henry Moseley showed that the atomic number of an element is a more fundamental property than its atomic mass as described below.
Description : Covalent bond is directional therefore which covalent property is shown ?
Last Answer : Space Isomerism
Description : Pick out the wrong statement pertaining to the roll crushers. (A) Maximum feed size determines the required roll diameter (B) For hard material's crushing, the reduction ratio should not ... ratio and differential roll speed affect production rate & energy consumed per unit of surface produced
Last Answer : (C) Both the rolls run necessarily at the same speed
Description : A decree becomes final (a) When no appeal has been preferred against the decree (b) When it conclusively determines the rights of the parties (c) Neither (a) nor (b) (d) Both (a) & (b)
Last Answer : (d) Both (a) & (b)
Description : Various Organizational routines & processes that determines how efficiently and effectively the Organization transforms it’s inputs into outputs is called: A. Strength B. Core Competencies C. Capabilities D. Customer Value
Last Answer : Core Competencies
Description : Ultimate analysis of coal determines its __________ content. (A) Carbon, hydrogen, nitrogen & sulphur (B) Carbon, ash, sulphur & nitrogen (C) Carbon, sulphur, volatile matter & ash (D) Carbon, volatile matter, ash & moisture
Last Answer : (A) Carbon, hydrogen, nitrogen & sulphur
Description : Orsat apparatus (A) Gives flue gas analysis on dry basis (B) Determines N2 in flue gas indirectly (C) Can’t determine CO in flue gas, if it is < 0.2% (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : Proximate analysis of coal determines its __________ content. (A) Moisture, ash, sulphur & volatile matter (B) Moisture, volatile matter, ash & fixed carbon (C) Moisture, sulphur, nitrogen & fixed carbon (D) None of these
Last Answer : (B) Moisture, volatile matter, ash & fixed carbon