What is the maximum number of hydrogen bonds in a H2 -Do You Know?

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Description : What is the maximum number of hydrogen bonds in a H2O molecule?

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Description : What Sodium (Na) and water (H2O) undergo a chemical reaction that produces sodium hydroxide (NaOH and hydrogen gas (H2). Which equation represents this chemical reaction?

Last Answer : 2Na+2H20->2Na0H+H2 ::::apex

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Description : What volume is occupied by 4 moles of hydrogen molecules (h2) at standard conditions?

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Description : Sodium reacts with water to form sodium hydroxide and hydrogen gas. The balanced equation which represents the above reaction is (a) Na(s) + 2H20(l) → 2NaOH(aq) + 2H2(g) (b) 2Na(s) + 2H2O(l) → 2NaOH(aq) +H2(g) (c) 2Na(s) + 2H20(l) → NaOH(aq) + 2H2(g) (d) 2Na(s) + H20(l) - 2NaOH(aq) + 2H2(g)

Last Answer : Answer: (b)

Description : With increase in the temperature of carbonisation of coal (A) Hydrogen content of coke oven gas increases due to cracking ofhydrocarbons (B) Methane content in the coke oven gas decreases and carbon monoxide content increases ( ... compensated by increase in CO & H2 content (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

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Last Answer : (A) Electrolysis of water

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Description : Maximum hydrogen bonding would be observed in which compound? -Do You Know?

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Description : Assertion : Phenol has lower boiling point then water Reason : Water forms more number of hydrogen bonds

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Description : The number of hydrogen bonds between adenine and thymine in DNA is (A) One (B) Two (C) Three (D) Four

Last Answer : Answer : B

Description : The hydrophilic nature of DNA is due to the presence of - (1) thymine base (2) a number of hydrogen bonds (3) phosphate group (4) deoxyribose sugar

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Description : The number of hydrogen bonds between guanine and cytosine in DNA is – (1) 2 (2) 3 (3) 4 (4) 1

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Last Answer : a number of hydrogen bonds

Description : The number of hydrogen bonds between guanine and cytosine in DNA is (1) 2 (2) 3 (3) 4 (4) 1

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Description : In DNA segment of six coils, 22 bp are linked by two hydrogen bonds. How many cytosine would be present ?

Last Answer : In DNA segment of six coils, 22 bp are linked by two hydrogen bonds. How many cytosine would be present ? A. 22 B. 38 C. 44 D. 76

Description : $ DNA replication is semiconservative. ! Helicases are the enzymes which can break the hydrogen bonds between the nuclotides of DNA

Last Answer : $ DNA replication is semiconservative. ! Helicases are the enzymes which can break the hydrogen bonds between the ... D. If both As and R are wrong.

Description : Which of the following compounds has the least tendency to form hydrogen bonds between molecules ?

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Description : If oxygen which has an electronegativity of 3.5 bonds with hydrogen which has an electronegativity of 2.1 the bond between the two atoms will be classified as a polar what bond?

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Description : How many bonds occur between the carbon and nitrogen atoms when drawing the Lewis dot structure for hydrogen cyanide?

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Description : Why do hydrogen bonds matter?

Last Answer : Hydrogen bonds are the strongest of the intermolecular forcesthat hold molecules together. They are important because thepresence or absence of hydrogen bonds determines many physical andchemical characteristics ... bonding will have a muchhigher boiling point than one with no hydrogen bonding.

Description : Why does water form intermolecular hydrogen bonds with other molecules?

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Description : If nitrogen which has an electronegativity of 2.0 bonds with hydrogen which has an electronegativity of 2.1 the bond between the two atoms will be classified as?

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Description : When adding electric energy to water molecules can it cause the bonds between Hydrogen and oxygen to break?

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Description : If you were to open the entire molecule along the hydrogen bonds what bases would the left side attach to?

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Description : When water boils and turns to steam what happens to the hydrogen bonds?

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Description : Which bonds are the last to break when an enzyme is heated 1 disulphide 2 hydrogen 3 hydrophobic interactions 4 ionic?

Last Answer : ionic

Description : how many bonds can a hydrogen atom form?

Last Answer : 1 (apex)

Description : How are hydrogen bonds broken?

Last Answer : a single strand of protein is wondering in the cell that makes thymine (one bond) connect with another bond called adenine. then the hydrogen bond (a type of surge) goes in between the different bonds and it acts like glue and is used like glue.

Description : What is the difference between hydrogen bonds and polar bonds?

Last Answer : Covalent - equal sharing of generally one pair of electrons (e.g. H2 hydrogen molecule)Polar covalent- ubequal sharing - the more electronegative element "attracts " the electrons in the bond towards ... covakently bonded to one atom attracted to a very electrnegative atom. (Example is water, H2O)

Description : Why are hydrogen bonds stronger?

Last Answer : least electronegative hydrogen and most electronegative F O N CL Br JOIN TOGETHER AND form a strong bond

Description : How are hydrogen bonds broken?

Last Answer : a single strand of protein is wondering in the cell that makes thymine (one bond) connect with another bond called adenine. then the hydrogen bond (a type of surge) goes in between the different bonds and it acts like glue and is used like glue.

Description : What is the difference between hydrogen bonds and polar bonds?

Last Answer : Covalent - equal sharing of generally one pair of electrons (e.g. H2 hydrogen molecule)Polar covalent- ubequal sharing - the more electronegative element "attracts " the electrons in the bond towards ... covakently bonded to one atom attracted to a very electrnegative atom. (Example is water, H2O)

Description : Why are hydrogen bonds stronger?

Last Answer : least electronegative hydrogen and most electronegative F O N CL Br JOIN TOGETHER AND form a strong bond

Description : In DNA, three hydrogen bonds are formed between (A) Adenine and guanine (B) Adenine and thymine (C) Guanine and cytosine (D) Thymine and cytosine

Last Answer : Answer : C

Description : DNA rich in G-C pairs have (A) 1 Hydrogen bond (B) 2 Hydrogen bonds (C) 3 Hydrogen bonds (D) 4 Hydrogen bonds

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Description : DNA rich in A-T pairs have (A) 1 Hydrogen bond (B) 2 Hydrogen bonds (C) 3 Hydrogen bonds(D) 4 Hydrogen bonds

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Description : The chemical forces that bind most coenzymes and substrates to enzymes such as LDH are (A) Hydrogen bonds (B) Peptide bonds (C) Coordinate bonds (D) Covalent bonds

Last Answer : Answer : D

Description : Conversion of pepsinogen to pepsin is (A) Intra molecular rearrangement (B) Breaking of hydrogen bonds (C) Covalent modification (D) Polymerisation

Last Answer : Answer : C

Description : The bond in proteins that is not broken under usual conditions of denaturation: (A) Hydrophobic bond (B) Hydrogen bond (C) Disulphide bond (D) Peptide bonds

Last Answer : Answer : D

Description : The hydrogen bonds between peptide linkages are interfered by (A) Guanidine (B) Uric acid (C) Salicylic acid (D) Oxalic acid

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Description : The hydrogen bonds in the secondary and tertiary structure of proteins are directly attacked by (A) Salts (B) Alkalies (C) Detergents (D) All of these

Last Answer : Answer : B

Description : α-helix is stabilized by (A) Hydrogen bonds (B) Disulphide bonds (C) Salt bonds (D) Non-polar bonds

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Description : Many globular proteins are stable in solution although they lack in (A) Hydrogen bonds (B) Salt bonds (C) Non-polar bonds (D) Disulphide bonds

Last Answer : Answer : D

Description : Proteins react with biuret reagent which is suggestive of 2 or more (A) Hydrogen bonds (B) Peptide bonds (C) Disulphide bonds (D) Hydrophobic bonds

Last Answer : Answer : B