Description : Which class of solids could have London Forces the attractive forces between particles in crystal lattice positions? w) ionic x) covalent y) metallic z) molecular
Last Answer : ANSWER: Z -- MOLECULAR
Description : Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally-------? A. ionic substances B. metallic substances (Answer) C. molecular solids D. covalent network solids
Last Answer : B. metallic substances (Answer)
Description : Which one of the following is classified as a covalent network solid crystal? w) CaO x) SiO2 y) CO2 z) Pb
Last Answer : ANSWER: B -- SiO2
Description : The characteristic bonds in nonmetal oxides are which of the following types? w) network x) covalent y) ionic z) coordinate covalent
Last Answer : ANSWER: X -- COVALENT
Description : The bond in Fluorine is which of the following types? Is it w) ionic x) nonpolar covalent y) polar covalent z) covalent network
Last Answer : ANSWER: X -- NONPOLAR COVALENT
Description : The bond in hydrogen chloride is which of the following types? Is it w) ionic x) nonpolar covalent y) polar covalent z) covalent network
Last Answer : ANSWER: Y -- POLAR COVALENT
Description : The atoms in sugar are bound by what type of bond? w) ionic x) hydrogen y) covalent z) van der Waals
Last Answer : ANSWER: Y -- COVALENT
Description : Sodium chloride is an example of what kind of compound? w) ionic x) covalent y) polyatomic z) monatomic
Last Answer : ANSWER: W -- IONIC
Description : The bond most likely to be formed when two atoms differ SOMEWHAT in their tendency to attract electrons is: w) nonpolar ionic x) polar ionic y) polar covalent z) nonpolar covalent
Description : A bond in which there is an unequal attraction for the shared electrons and a resultant unbalanced distribution of charge is which one of the following types of bonds? w) ionic x) pure covalent y) nonpolar covalent z) polar covalent
Last Answer : ANSWER: Z -- POLAR COVALENT
Description : Forces in ionic crystalline solids are primarily which of the following? w)covalent x)electrostatic y)Van der Waals z)magnetic
Last Answer : ANSWER: X -- ELECTROSTATIC
Description : Solids may be considered to be either crystalline noncrystalline. The basic difference between them is that a crystal, in contrast to a noncrystal: w) has a sharp melting point x) has an irregular array of atoms y) exhibits double refraction z) has a completely regular atomic or molecular structure
Last Answer : ANSWER: Z -- HAS A COMPLETELY REGULAR ATOMIC OR MOLECULAR STRUCTURE
Description : If two atoms exert equal attractions for electrons, they can form: w) a nonpolar covalent bond x) an ionic bond y) a polar covalent bond z) no bond
Last Answer : ANSWER: W -- A NONPOLAR COVALENT BOND
Description : NaCI has _______. (1) Non-polar bonds (2) Polar covalent bonds (3) Metallic bonds (4) Ionic bonds
Last Answer : (4) Ionic bonds Explanation: Sodium Chloride, NaCl. The classic case of ionic bonding, the sodium chloride molecule forms by the ionization of sodium and chlorine atoms and the attraction of the resulting ions.
Description : Cubic crystals containing lattice points only at the corners are called: w) body centered x) face centered y) simple z) hexagonal
Last Answer : ANSWER: C-SIMPLE
Description : Which of the following is not a covalent network solid? w) silicon dioxide x) silicon oxide y) boron nitrate z) sodium oxide
Last Answer : ANSWER: D -- SODIUM OXIDE
Description : Semiconductors possess which type of bonding? a) Metallic b) Covalent c) Ionic d) Magnetic
Last Answer : b) Covalent
Description : The following type of bonding is strongly directional in solids. (A) Vander Waal's (B) Ionic (C) Metallic (D) Covalent
Last Answer : D) Covalent
Description : What is the type of bonding in silicon? (A) Ionic. (B) Covalent. (C) Metallic. (D) Ionic + Metallic
Last Answer : (B) Covalent.
Description : Is Co(s) ionic or covalent or metallic?
Last Answer : Need answer
Description : What are ionic, covalent and metallic bonds?
Last Answer : all of una deh kraz o! u mean say una no sabi dis kyn simple question.
Description : Sodium chloride, potassium chloride, magnesium oxide are examples of molecules with (a) Covalent bonding (b) Ionic bonding (c) Metallic bonding (d) Hydrogen bonding
Last Answer : Ans:(b)
Description : Which of the following terms means that a crystal has the ability to capture and hold water molecules? w) hydroponic x) hygroscopic y) hydrophobic z) hydropholectic
Last Answer : ANSWER: X -- HYGROSCOPIC
Description : What is a typical spacing between atoms in a crystal, e.g., copper or rock salt? w) 0.1 Angstroms x) 2 Angstroms y) 20 Angstroms z) 100 Angstroms
Last Answer : ANSWER: B -- 2 ANGSTROMS
Description : A crystallized substance containing water of crystallization is most appropriately termed: w) a hydrate x) an oxide y) a hydroxide z) a condensation crystal
Last Answer : ANSWER: W -- A HYDRATE
Description : Mayonnaise is: w) an emulsion x) a hydrogenated oil y) a covalent solution z) a coalescent solution
Last Answer : ANSWER: W -- AN EMULSION
Description : Which of the following elements would form a covalent bond with Bromine? w) Calcium x) Aluminum y) Oxygen z) Tin
Last Answer : ANSWER: Y -- OXYGEN
Description : Which of the following has a multiple covalent bond? w) Bromine x) Hydrogen y) Oxygen z) Chlorine Monofluoride
Description : Which of the following compounds contains both io and covalent bonds? w) Calcium Chloride x) Carbon Dioxide y) Calcium Fluoride z) Calcium Sulfate
Last Answer : ANSWER: Z -- CALCIUM SULFATE
Description : Mayonnaise is: w) a coalescent solution x) a hydrogenated oil y) a covalent solution z) an emulsion
Last Answer : ANSWER: Z -- AN EMULSION
Description : Which of the following elements can form the great number of covalent bonds? w) carbon x) nitrogen y) oxygen z) sulfur
Last Answer : ANSWER: Z -- SULFUR
Description : In which of the following compounds is the bonding most covalent? w) NaCl x) F2 y) MgS z) Fe3C
Last Answer : ANSWER: X -- F2
Description : The metallic element with the highest melting point is: w) Ta x) W y) Rh z) Mo
Last Answer : ANSWER: X -- W
Description : Which of the following is a metallic salt of a fatty acid? Is it: w) soap x) plastic y) rubber z) petroleum
Last Answer : ANSWER: A -- SOAP
Description : Which of the following terms refers to the number of molecules or ions attached to a central metallic atom? w) coordination number x) connection number y) bonding number z) none of these
Last Answer : ANSWER: W -- COORDINATION NUMBER
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 : The crystal of diamond shines due to (a) High density (b) Total internal reflection (c) Crystal lattice (d) None of these
Description : Pure nickel is (A) Ferromagnetic above its curie point (i.e., 415°C) (B) Having h.c.p. crystal lattice (C) Ferromagnetic at room temperature (D) Not resistant to oxidation at high temperature
Last Answer : (C) Ferromagnetic at room temperature
Description : Pick out the wrong statement. (A) Metal/alloys having hexagonal crystal lattice structure are less malleable than those having cubic crystal lattice structure (B) Metal/alloys having body centred cubic ... D) Both ferritic & austenitic stainless steel has a face centred cubic (fcc) crystal structure
Last Answer : (C) Tungsten has a body centred cubic (bcc) crystal lattice structure
Description : Nickel as a material of construction (A) Is used as an alloying element for both ferrous & non-ferrous alloys (B) Is paramagnetic below 415° C (its Curie temperature) (C) Diamagnetic (D) Has a body centred cubic (bcc) crystal lattice structure
Last Answer : (A) Is used as an alloying element for both ferrous & non-ferrous alloys
Description : Out of the following, the lowest packing of atoms exists in __________ crystal lattice structure. (A) Hexagonal close, packed (hcp) (B) Face centred cubic (fcc) (C) Body centred cubic (bcc) (D) Simple cubic
Last Answer : (D) Simple cubic
Description : Closeness of packing is maximum in case of __________ crystal lattice. (A) Face centred (B) Simple cubic (C) Body centred (D) None of these
Last Answer : (A) Face centred
Description : Mild steel has __________ crystal lattice structure. (A) Face centred cubic (fcc) (B) Body centred cubic (bcc) (C) Orthorhombic (D) Cubic
Last Answer : (B) Body centred cubic (bcc)
Description : A smallest three dimensional part of a crystal lattice is called. a) A particle b) A molecules c) A unit cell d) An atom
Last Answer : c) A unit cell
Description : Ionic substances dissolve in water to form: w) highly acid solutions x) electrolytic solutions y) colloids z) emulsions
Last Answer : ANSWER: X -- ELECTROLYTIC SOLUTIONS
Description : Carbon atoms link together with other carbon atoms in all of the following ways EXCEPT w) networks x) chains y) ionic bonds z) rings
Last Answer : ANSWER: Y -- IONIC BONDS
Description : Which of these molecules is bound by ionic bonds? w) H2O x) CH4 y) NaCl z) C6H12O6
Last Answer : ANSWER: Y -- NaCl
Description : The hydrocarbon end of a detergent molecule is: w) hydrophilic x) hydrophobic y) possible ionic z) contains oxygen or sulfur
Last Answer : ANSWER: HYDROPHOBIC
Description : In 2-butene, which of the following bonds prevents the atoms at each end of the bond from rotating with respect to each other. Is it an: w) ionic bond x) sigma bond y) strong bond z) double bond
Last Answer : ANSWER: Z -- DOUBLE BOND