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 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 : The molecules which contain `sigma` bond , `pi` bond and lone pair `1:1:1` ratio :-
Last Answer : The molecules which contain `sigma` bond , `pi` bond and lone pair `1:1:1` ratio :- A. `C_(2)N_(2) ... methane ) D. `C_(3)O_(2)` ( Carbon suboxide )
Description : What is a chemical bond formed between shared atoms?
Last Answer : Need answer
Description : In the water molecule are electrons are equally shared by hydrogen atoms and oxygen atoms?
Last Answer : What is the answer ?
Description : How many total electrons are shared in a triple covalent bond?
Last Answer : 4 :)
Description : Name the type of bond in which there is an unequal attraction for the shared electrons and a resultant unbalanced distribution of charge:
Last Answer : ANSWER: POLAR COVALENT BOND
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 : If the electron pair forming a bond between two atoms and B is not in the center then the bond is ?
Last Answer : If the electron pair forming a bond between two atoms and B is not in the center then the bond is ? A. `XeF_(6) ... XeO_(4)` D. `Ba_(2)[XeO_(6)]^(4-)`
Description : The lone pair of electrons at one of the ring nitrogens in the given amino acid makes a potential ligand, which is important in binding the iron atoms in hemoglobin: (A) Tryptophan (B) Threonine (C) Histidine (D) Serine
Last Answer : Answer : C
Description : Covalent bonds are formed by the sharing of a pair of ____. a. atoms c. electrons b. neurons d. protons
Last Answer : c. electrons
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 : When radiation breaks an electron pair bond in a molecule and each fragment of the molecule gets one of the bond electrons, the molecular fragments that are formed are called: w) ions x) free radicals y) stable molecules z) gases
Last Answer : ANSWER: X -- FREE RADICALS
Description : A(n) _____ bond forms when two atoms share one or more pairs of electrons?
Last Answer : covelent
Description : Is A nonpolar bond is formed when two atoms share electrons unequally?
Last Answer : No. A polar bond is formed when electrons are sharedunevenly.A nonpolar bond indicates even sharing of electrons.
Description : What identification bond characterized by the sharing of electrons between atoms?
Last Answer : This is the covalent bond.
Description : What is a chemical bond that occurs when atoms share electrons?
Last Answer : This is a covalent bond.
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 : Which of the following statements about benzene is correct? (a) All of the carbon atoms are sp3 hybridized. (b) It has no delocalized electrons. (c) The carbon-carbon bond length is longer than that of ethane. (d) It is a planar molecule.
Last Answer : It is a planar molecule.
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 : 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
Last Answer : ANSWER: Y -- POLAR COVALENT
Description : Francis and George started a business with investments of Rs.7000 and Rs.10000. After x months, Francis left. After two more months David joined the business with an investment of Rs.10000. If the annual profit is shared among David, ... which they stayed that year. a)5:5:12 b)1:1:3 c)1:1:4 d)1:1:2
Last Answer : a)5:5:12
Description : (a) Show on a diagram the transfer of electrons between the atoms in the formation of MgO. Write symbols of cation and anion present in MgO. (b) Name the solvent in which ionic compounds are generally soluble. (c) Why are aqueous solutions of ionic compounds able to conduct electricity? -Chemistry
Last Answer : (b) Ionic compounds are soluble in water. (c) It is because aqueous solutions consist of ions which can move freely in them and carry current.
Description : (a) Show the formation of Na2O by the transfer of electrons between the combining atoms. (b) Why are ionic compounds usually hard? (c) How is it that ionic compounds in the solid state do not conduct electricity but they do so when in molten state? -Chemistry
Last Answer : (b) It is due to strong force of attraction between oppositely charged ions. (c) In solid state, ions are not free to move whereas in molten state ions are free to move, therefore, they conduct electricity in molten state.
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
Last Answer : Ans:(c)
Description : Acetamide is a much weaker base than ammonia. This is because (a) the electron withdrawing effect of the C=O group makes the lone pair of electrons on nitrogen atom less available for protonation. (b) ) ... NH2 group. (d) an H atom from the nitrogen is less easily lost from CH3CONH2 than from NH3.
Last Answer : the electron withdrawing effect of the C=O group makes the lone pair of electrons on nitrogen atom less available for protonation
Description : Select the correct statement from the ones given below with respect to Periplaneta americana. (a) Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal ... midgut and hindgut. (d) Grinding of food is carried out only by the mouth parts.
Last Answer : (b) Males bear a pair of short thread like anal styles.
Description : Select the correct statement from the ones given below with respect to Periplaneta americana (1) Grinding of food is carried out only by the mouth parts (2) Nervous system located dorsally, consists ... (4) There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut
Last Answer : (3) Males bear a pair of short thread like anal styles
Description : Each antibody molecule is made up of how many PAIR of polypeptide chains, joined together by disulfide bonds. a) 1 b) 2 c) 3 d) 4
Last Answer : ANSWER: B -- 2
Description : What is the name of one element in the table above which is a gas at room temperature and in which the atoms are joined together in molecules.?
Last Answer : Oxygen would be such an element (as would hydrogen, nitrogen,fluorine, chlorine).
Description : What is made of different atoms joined together?
Last Answer : A compound is made of different elements.
Description : Which of the following statements is true about terpenes? (a) They are a class of lipids that can be isolated from plants. (b) They contain carbon atoms in multiples of five. (c) They are composed of isoprene units joined together in a head-to-tail fashion. (d) All of the above
Last Answer : All of the above
Description : Human growth hormone has (A) One polypeptide chain and one intra-chain disulphide bond (B) One polypeptide chain and two intra-chain disulphide bond (C) Two polypeptide chains joined by one disulphide bond (D) Two polypeptide chains joined by two disulphide bond
Last Answer : Answer : B
Description : In a nucleotide, the nitrogen base is joined to the sugar molecule by a) Phosphodiester bond b) Glycosidic bond c) Hydrogen bond d) (a) &(b)
Last Answer : b) Glycosidic bond
Description : To be effective in ulcerative colitis, 5-aminosalicylic acid has to be given as: A. Acrylic polymer coated tablet which releases the drug only in the lower bowel B. A complex of two molecules joined together by azo bond C. A retention enema D. Any of the above ways
Last Answer : D. Any of the above ways
Description : A set of processors P1, P2, ......, Pk can execute in parallel if Bernstein's conditions are satisfied on a pair wise basis; that is P1 || P2 || P3 || ..... || Pk if and only if: (A) Pi || Pj for all i ≠ j (B) Pi || Pj for all i = j+1 (C) Pi || Pj for all i ≤ j (D) Pi || Pj for all i ≥ j
Last Answer : (A) Pi || Pj for all i ≠ j Explanation: Bernstein's Condition: 1. If process Pi writes to a memory cell Mi, then no process Pj can read the cell Mi. 2. If process Pi read from a memory ... Mi. 3. If process Pi writes to a memory cell Mi, then no process Pj can write to the cell Mi.
Description : The electronic repulsion is maximum between (a) Shared pair - shared pair (b) Shared pair - lone pair (c) Lone pair - lone pair (d) None of these
Description : If energy of incident photon is greater than the rest mass energy of electron positron pair, the surplus energy is shared by the pair as, a) Potential energy b) Thermal energy c) Electronic energy d) Kinetic energy
Last Answer : d) Kinetic energy
Description : 802.3 is the standard for 10BASE5 Ethernet that uses ___________ cable as shared medium. A. Twisted pair cable B. Coaxial cable C. Fiber optic cable D. None of the above
Last Answer : B. Coaxial cable
Description : 1. Where is Indian Institute of Petroleum located? 2. Which pair of countries the leading manufacturers of cement in the world ? 3. Of which kingdom was Malik Ambar the Prime Minister? 4. ... African States? 20. Which state ranks first in terms of the maximum number of agro-based industries?
Last Answer : Answer : 1. Dehradun 2. China and India 3. Ahrnadnagar 4. William Henry Bragg 5. CO2 6. Sachidananda Sinha 7. Congo 8. Dadabhai Naoroji 9. Hydrogen bonding 10. Tea 11. Atmospheric refraction 12. River Hudson 13. Lytton 14. Xylem 15. B. R. Ambedkar 16. Gamma rays 17. 25 18. 1917 19. France 20. Punjab
Description : Which of the following has more number of `p pi-dpi` bonds?(all central atoms are in excited states)
Last Answer : Which of the following has more number of `p pi-dpi` bonds?(all central atoms are in excited states) A. `SO_(2)` B ... `SO_(3)^(2-)` D. `CO_(3)^(2-)`
Description : In `SO_(2)` two oxygen atoms are linked to the sulpher atom through double bonds. The two `pi` bonds are
Last Answer : In `SO_(2)` two oxygen atoms are linked to the sulpher atom through double bonds. The two `pi` bonds are A. ... (pi)-p_(pi)` and one `p_(pi)-p_(pi)`
Description : What Atoms in a molecule are held together through shared what?
Description : Hydrogen bonds are formed when a hydrogen atom is shared between two ____. a. molecules c. elements b. atoms d. neutrons
Last Answer : a. molecules
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 : How many sigma and pi bonds are there in a triple bond?
Last Answer : 1 sigma, 2 pi bonds in a triple bond.
Description : In double bond, how many sigma and Pi bonds are present in it ?
Last Answer : Double bond = 1 Sigma bond and one Pi bond Among sigma and Pi bonds which is the stronger one Sigma bond is Stronger than pi bond