Description : Diamond is hard because (a) It has strong covalent bonds (b) Discrete molecules of carbon are held by strong Vander Waal’s forces (c) It involves Van der Waal's forces (d) Covalent bonds are directional unlike ionic bonds
Last Answer : Ans:(a)
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 : In biotin-containing enzymes, the biotin is bound to the enzyme by (A) An amide linkage to carboxyl group of glutamine (B) A covalent bond with CO2 (C) An amide linkage to an amino group of lysine (D) An amide linkage to α-carboxyl group of protein
Last Answer : Answer : C
Description : Define co-ordination covalent bond.
Last Answer : Co-ordination covalent bond is formed by the mutual sharing of pair of electrons between two atoms contributed by only one of the combining atoms.
Description : Define polar covalent bond
Last Answer : The covalent bond formed by the unequal sharing of electrons between the two atoms is called polar covalent bond.
Description : What is the direction of current through the load resistor in the circuit shown in the illustration? EL-0085 A. Always from point 'Z' to the grounded end. B. Always from the grounded end to ... on the instantaneous polarity at point 'W'. D. It cannot be determined without a directional ammeter.
Last Answer : Answer: B
Description : The transmission line distance protection relay having the property of being inherently directional is (A) impedance relay (B) MHO relay (C) OHM relay (D) reactance relay
Last Answer : The transmission line distance protection relay having the property of being inherently directional is MHO relay
Description : The ground detection system, shown in the illustration for a low-voltage, threephase system has a ground in line 'A'. Therefore, lamp 'A' will burn ____________. EL-0009 A. dimly or be out, and lamps 'B' and ... and 'C' will burn dimly or be out D. brightly, and lamps 'B' and 'C' will burn normally
Last Answer : Answer: A
Description : After turning on the fluorescent lamp shown in the illustration, you note that the ends of the tube alternately glow and becomce dark without illuminating the center. The most obable cause for ... the lamp D. component 'B' contacts are opening and closing thus prohibiting sufficient current flow
Last Answer : Answer: C
Description : As shown in the illustration, the circuit has been on the line for several days when component 'E1' burns out. The operator receives an alarm, switches over 'B' to energize the standby ... than required for the circuit therefore limiting the current through the alarm relay which will not pick up
Last Answer : Answer: D
Description : During start-up of the circuit shown in the illustration, it is noted that the ends of component 'C' alternately glow and become dark without the tube illuminating. The most probable cause ... start the lamp D. component 'B' contacts are opening and closing thus prohibiting sufficient current flow
Description : What is a covalent bond?
Last Answer : A covalent bond is a type of chemical bond where two atoms share one or more pairs of electrons to form a stable molecule.
Description : What is the difference between a covalent and an ionic bond?
Last Answer : A: A covalent bond is formed when two atoms share electrons, while an ionic bond is formed when one atom donates electrons to another atom.
Last Answer : A: A covalent bond involves the sharing of electrons between atoms, while an ionic bond involves the transfer of electrons between atoms to form ions.
Description : a covalent bond is formed by the following process -General Knowledge
Last Answer : A covalent bond is formed by D) Gaining or losing two or more electrons by an atom.
Description : what two atoms forms a covalent bond?
Last Answer : Two oxygen atoms, you sneaky person, you.
Description : Which of the following molecules contains a polar covalent bond A.H2 B.N2 C.CO D.O2?
Last Answer : C. CO
Description : What is a covalent bond ? What is a covalent bond ?
Last Answer : The bond formed by the electron share of the electron configuration gain of the inert gas at the last energy level is called covalent bond.
Description : Which of the following compounds has ionic bond. `pi-`bond, co-ordinate bond and covalent bond:-
Last Answer : Which of the following compounds has ionic bond. `pi-`bond, co-ordinate bond and covalent bond:- A. `HNO_(2)` B. `NaNO_(3)` C. `KNO_(2)` D. `MgCl_(2)`
Description : (A) Heterolytic fission involves the breaking of a covalent bond in such a way that both the electrons of the shared pair are carried away by one of t
Last Answer : (A) Heterolytic fission involves the breaking of a covalent bond in such a way that both the electrons of ... IF (A) is incorrect but (R) is correct.
Description : Which among the following statements are true with respect to electronic displacement in a covalent bond? (1) Inductive effect operates through a `pi`
Last Answer : Which among the following statements are true with respect to electronic displacement in a covalent bond? (1) Inductive ... 3 C. 2 and 3 D. 3 and 4
Description : Is covalent bond inorganic?
Last Answer : Covalent bond can exist in any type of compounds.
Description : Is bromine pentaiodide ionic or covalent bond?
Last Answer : The bonds are polar covalent.
Description : What is the difference between an ionic bond a covalent bond and a hydrogen bond?
Last Answer : The ionic bond bond is based on electrostatic attraction between ions.The covalent bond is based on electrons sharing between two atoms.The hydrogen bond exist between two polar groups and is a weak bond.
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 : Is phosphorus pentoxide ionic or covalent bond?
Last Answer : Phosphorus pentoxide is a covalent bond, not a ionic.-Emiko Bunny
Description : What molecule contains a non-polar covalent bond?
Last Answer : Feel Free to Answer
Description : Is KClO4 is an ionic or covalent bond?
Last Answer : What is the answer ?
Description : What kind of covalent bond involves an even sharing of electron?
Last Answer : A nonpolar covalent bond involves an even sharing ofelectrons.
Description : Is CuSO4 an ionic bond or covalent bond?
Last Answer : It is considered to be ionic.
Description : What do covalent bond and ionic bond have in common?
Last Answer : there electrons
Description : How is a covalent bond is formed between atoms?
Last Answer : the atoms share electrons
Description : In a non-polar covalent bond electrons are?
Last Answer : In a non-polar covalent bond electrons are evenly distributed.
Description : Is an ionic bond stronger than a covalent bond?
Last Answer : Covalent bond is made up of electrostatic attraction but ionic bond is made up of weak waalander's force of attraction
Description : How many total electrons are shared in a triple covalent bond?
Last Answer : 4 :)
Description : Is a covalent bond stronger than a hydrogen bond?
Last Answer : A hydrogen bond is weaker than a covalent bond.
Description : Which of the following statement(s) is/are true concerning translation of the mRNA message to protein synthesis? a. An adaptor molecule, tRNA, recognizes specific nucleic acid bases and unites them ... and the free amino acid occurs in the free cytoplasm d. Complete protein synthesis takes hours
Last Answer : Answer: a, b The synthesis of protein involves conversion from a four-letter nucleotide language to one of 20 chemically distinct amino acids. This process is referred to as ... translation and be moving down the mRNA molecules simultaneously, thus increasing the rate of protein synthesis
Description : The process of changing of one element into another is called (a) radioactive decay (b) transmutation of the elements (c) covalent bond formation (d) hybridization
Last Answer : Ans:(b)
Description : The covalent bond that is repeatedly present between different amino acid residues in a protein is called (a) p-bond (b) hydrogen bond (c) peptide bond (d) metallic bond
Last Answer : Ans:(c)
Description : A single covalent bond (a) Is formed by the transfer of two electrons (b) Exists between hydrogen and chlorine in an aqueous solution, of hydrochloric acid (c) Is longer than a double bond (d) Does not require energy to disrupt it unlike an ionic bond
Description : Why are covalent compounds poor conductors of electricity? (1) Due to the presence of charged particles. (2) Due to the absence of charged particles. (3) Due to the presence of a triple bond. (4) None of the above
Last Answer : (2) Due to the absence of charged particles. Explanation: In a covalent compound, electrons are shared between atoms. This leaves no free electrons and hence there and no charged particles. This leads to covalent compounds being poor conductors of electricity.
Description : When two ice cubes are pressed together, they join to form one cube. Which one of the following helps to hold them together? (1) Hydrogen bond formation (2) Vander waals forces (3) Covalent attraction (4) Dipole interaction
Last Answer : (1) Hydrogen bond formation Explanation: When two ice cubes are pressed together, they join to form one cube due to hydrogen bond.
Description : Mark the compound which posses ionic, covalent and co–ordinate bond:
Last Answer : NH4Cl
Description : What type of fissions is possible in a Covalent Bond?
Last Answer : Ans: Homolytic and Heterolytic
Description : When does ionic character develop in covalent bond?
Last Answer : Ans. When the difference in electro negativity of the combining atom is more than 1.9 it develops 50 % ionic character .
Description : How does covalent bond form in terms of orbital overlap concept?
Last Answer : Ans. When two half filled orbitals overlap ,covalent bond forms .