In a neutral solution
(A) H+ions are absent
(B) OH ions are absent
(C) Both H+ and OH ions are present in very small but equal concentration (D) None of these

1 Answer

Answer :

(C) Both H+ and OH ions are present in very small but equal concentration

Related questions

Description : Ions moving towards the cathode during electrolysis of an aqueous solution of Ca(OH)2 are (a) OH (b) H+ (c) Ca2+ (d) 02

Last Answer : Ans:(a)

Description : The concentration of (H+) ions is 4 x 10-5in a solution. Then pH of the solution will be (Given log 4 = 0.6) (A) 4.4 (B) 5.6 (C) 8.4 (D) 2.4

Last Answer : (A) 4.4

Description : A key process in metabolism is the transport of hydrogen ions (H+) across a membrane to create a concentration gradient. Explain which arrangement of hydrogen ions (unequal concentration or equal concentration) allows work to be done.

Last Answer : It is clear that an unequal concentration, not an equal one, would be the only possibility that work will be done; the unequal concentration of hydrogen ions would allow them to flow across the membrane and increase not only entropy but also work.

Description : If water is formed from `H^(+)` ions and `OH^(-)` the heat of formation of water is :

Last Answer : If water is formed from `H^(+)` ions and `OH^(-)` the heat of formation of water is : A. `-13.7` ... . 13.7 Kcal C. `-63.4` Kcal D. More data required

Description : Where do the H plus and OH- ions come from?

Last Answer : H+ exist in acids and OH- exist in bases.

Description : Buffer solutions have constant acidity and alkalinity because: (1) they have fixed value of pH (2) these give unionised acid or base on reaction with added acid or alkali (3) acids and alkalies in these solutions are shielded from attack by other ions (4) they have large excess of H+ or OH– ions

Last Answer : these give unionised acid or base on reaction with added acid or alkali

Description : The amino acid exist as Zwitter ions when they are in (A) solid state (B) acidic solution (C) alkaline solution (D) neutral solution

Last Answer : Answer : D

Description : At neutral pH, a mixture of amino acids in solution would be predominantly: (A) Dipolar ions (B) Nonpolar molecules (C) Positive and monovalent (D) Hydrophobic

Last Answer : Answer : A

Description : An aqueous solution of glycine is neutral because of the formation of : (a) Carbanion (b) Zwitterion (c) Carbonium ions (d) Free radicals

Last Answer : Zwitterion

Description : At neutral pH, a mixture of amino acids in solution would be predominantly: (A) Dipolar ions (B) Nonpolar molecules (C) Positive and monovalent (D) Hydrophobic

Last Answer : (A) Dipolar ions

Description : The concentraction of hydrogen ion (H+ )is denoted by pH.How do you denote concentration of hydrogen ion(OH)?

Last Answer : Ans:The concentration of hydrogen ion (OH) is denoted by poH.

Description : What concentration of `Ag^(+)` ions will be in equilibrium with a saturated solution containing a precipitate of `Ag_(2)CrO_(4) and CrO_(4)`-ion conce

Last Answer : What concentration of `Ag^(+)` ions will be in equilibrium with a saturated solution containing a precipitate of ... D. `5.9xx10^(-6)` moles per litre

Description : Several applications have been suggested to increase the effectiveness of prophylactic application of topical fluoride which include all EXCEPT: A. Increase Fluoride ions in solution increase concentration B. Increase ... D. Pre-treat enamel with 0.5% phosphoric acid E. Use NH4F instead of NaF

Last Answer : B. Increase PH of fluoride

Description : The concentration of sodium ions in the standard WHO oral rehydration solution is: A. 40 m moles/L B. 60 m moles/L C. 90 m moles/L D. 110 m moles/L

Last Answer : C. 90 m moles/L

Description : pH is defined as the negative logarithm of the hydrogen ion concentration. Comparing a pH 5 and a pH 8 solution, which of the following is true? w) There are 1,000 times more hydrogen ions in ... . z) Cannot tell the difference between these two solutions by pH, since the numbers are so close.

Last Answer : ANSWER: X -- THERE ARE 1,000 TIMES MORE HYDROGEN IONS IN THE PH 5 SOLUTION

Description : Phosphorus and nitrogen ions generally get depleted in soil because they usually occur as (a) neutral ions (b) negatively charged ions (c) positively charged ions (d) both positively and negatively charged but disproportionate mixture.

Last Answer : (b) negatively charged ions

Description : Which among the following is false about acids? (1) They give H+ ions in aqueous solution (2) Most acids contain hydrogen (3) They turn blue litmus red (4) They are bad conductor of electricity in aqueous solution

Last Answer : (4) They are bad conductor of electricity in aqueous solution Explanation: Acids are good conductors of electric current in aqueous solution. When acids come in contact with water, they liberate OH ions, resulting in conduction of electricity.

Description : How could we prevent H+ ions to be discharged first than Na+ during electrolysis of aqueous solution of NaCl?

Last Answer : Ans: This could be prevented by using mercury cathode during this kind of electrolysis, because H+ ions need high voltage to be discharged at mercury cathode. In this way sodium got discharged at cathode despite H+ ions.

Description : What type of ions are present in solution but are not actually involved in a chemical reaction?

Last Answer : These ions are called "spectators".

Description : What type of ions are present in solution but are not actually involved in a chemical reaction?

Last Answer : These ions are called "spectators".

Description : Pick out the correct statement. (A) Loss of electrons from neutral atoms produces negative ions (B) The radius of nucleus & atomic size are of the order of 10 -12 cm & 10 - 8 cm respectively (C) Gain of electrons by neutral atoms form cations

Last Answer : (B) The radius of nucleus & atomic size are of the order of 10 -12 cm & 10 - 8 cm respectivel

Description : Upon the entry of carbon dioxide in the red blood cells, H+ionsare formed at a very rapid rate, and yet the blood does not turn acid because (a) H+ ions are rapidly exchanged at the ... haemoglobin and plasma (d) H+ ions are buffered by proteins of haemoglobin and proteins and phosphates of plasma

Last Answer : Ans:(c)

Description : 1 mole of `OH^(-)` ions is obtained from 85 g of hydroxide of a metal. What is the equivalent weight of the metal ?

Last Answer : 1 mole of `OH^(-)` ions is obtained from 85 g of hydroxide of a metal. What is the equivalent weight of the metal ?

Description : Among the complex ions, `[Co(NH_(2) - CH_(2) - CH_(2) - NH_(2))_(2) Cl_(2)]^(+), [CrCl_(2) (C_(2)O_(4))_(2)]^(3-)` `[Fe(H_(2)O)_(4) (OH)_(2)]^(+), [Fe

Last Answer : Among the complex ions, `[Co(NH_(2) - CH_(2) - CH_(2) - NH_(2))_(2) Cl_(2)]^(+), [CrCl_(2) ... (3)) Cl]^(2+)` and that show(s) cis-trans isomerism is

Description : In hemolytic jaundice, bilirubin in urine is (A) Usually absent (B) Usually present (C) Increased very much (D) Very low

Last Answer : Answer : A

Description : Which one of the following statements is totally wrong about the occurrence of notochord, while the other three are correct? (a) It is present only in larval tail in ascidian. (b) It is ... absent throughout life in humans from the very beginning. (d) It is present throughout life in Amphioxus.

Last Answer : (c) It is absent throughout life in humans from the very beginning.

Description : In obstructive jaundice, urinary bilirubin is (A) Absent (B) Increased (C) Present (D) Present in small amount

Last Answer : Answer : B

Description : In hemolytic jaundice, the urinary bilirubin is (A) Normal (B) Absent (C) More than normal (D) Small amount is present

Last Answer : Answer : C

Description : The volume (in `mL`) of `0.1M Ag NO_(3)` required for complete precipitation of chloride ions present in `30 mL` of `0.01M` solution of `[Cr(H_(2)O)_(

Last Answer : The volume (in `mL`) of `0.1M Ag NO_(3)` required for complete precipitation of chloride ions present ... Cl]Cl_(2)`, as silver chloride is close to:

Description : During electrolysis of aqeous solution of NaCl, there are two type of anions are present Cl- and –OH, Cl- is discharged first than –OH,although it is present below Cl- in electrochemical series. Give reason.

Last Answer : Ans: During this electrolysis process Chloride ions come from NaCl, which is a strong electrolyte and ionize to large extent so concentration of chloride ions in solution will be high. ... chloride ions it is first discharged despite of its presence above than hydroxyl in electrochemical series.

Description : If neutral atoms become positive ions they?

Last Answer : have lost electrons

Description : What is the ratio of Femc003-1.jpg ions to Omc003-2.jpg ions in a neutral compound?

Last Answer : What is the answer ?

Description : If neutral atoms become positive ions they?

Last Answer : have lost electrons

Description : Lipids are insoluble in water because lipid molecules are (a) hydrophilic (b) hydrophobic (c) neutral (d) zwitter ions.

Last Answer : (b) hydrophobic

Description : Relative to a solution with a pH of 4, a solution of pH = 6 is: w) higher in H+ concentration x) lower in OHy) less basic z) less acidic

Last Answer : ANSWER: Z -- LESS ACIDIC

Description : What is correct for blood group O? (a) No antigens but both a and b antibodies are present. (b) A antigen and b antibody present. (c) Antigen and antibody both absent. (d) A and B antigens and a, b antibodies present.

Last Answer : (a) No antigens but both a and b antibodies are present.

Description : Fundic part of stomach is (a) Present in rabbit but absent in frog (b) Absent in rabbit but present in frog (c) Absent in both (d) Present in both

Last Answer : (a) Present in rabbit but absent in frog

Description : Plasma non-functional enzymes are (A) totally absent (B) low concentration in plastic (C) important for diagnosis of several disease (D) All of these

Last Answer : Answer : D

Description : Glycolate induces opening of stomata in (a) presence of oxygen (b) low CO2 concentration (c) high CO2 (d) CO2 absent.

Last Answer : (b) low CO2 concentration

Description : Chemoreceptors for `CO_(2)` and `H^(+)` ion concentration are present in :-

Last Answer : Chemoreceptors for `CO_(2)` and `H^(+)` ion concentration are present in :- A. Arteries and ... and veins and medulla D. Vein and pons and medulla

Description : Ammonium sulphate fertiliser is (A) The highest concentration nitrogenous fertiliser (B) The best fertiliser for paddy (C) A basic fertiliser (D) A neutral fertiliser

Last Answer : (B) The best fertiliser for paddy

Description : The movement of Ions against the concentration gradient will be -

Last Answer : The movement of Ions against the concentration gradient will be - A. Active transport B. Osmosis C. Diffusion D. All

Description : The movement of Ions against the concentration gradient will be -

Last Answer : The movement of Ions against the concentration gradient will be - A. Active transport B. Osmosis C. Diffusion D. All of these

Description : What area around it so has a high concentration of sodium ions are the result the cell membrane expands and burst which problem was the cell most likely having?

Last Answer : What is the answer ?

Description : What statement about Arrhenius acids is FALSETheir aqueous solutions are electrolytesTheir water solutions are called aqueous acids They increase the concentration of hydroxide ions in aqueous solutionThey are molecular compounds with hydrogen ions?

Last Answer : The answer is: They increase the concentration of hydroxide ions in aqueous solution.

Description : Average concentration of chloride ions in cerebrospinal fluid per 100 ml is (A) 40 mg (B) 440 mg (C) 160 mg (D) 365 mg

Last Answer : Answer : B

Description : A striking feature of living cells is a marked difference between the composition of the cytosol and the extracellular milieu. Which of the following statement(s) concerning the mechanisms of maintenance ... d. The selectivity of cell membranes relates only to ions and not organic compounds

Last Answer : Answer: a The survival of the cell requires that cytosolic composition be maintained within narrow limits, despite the constant influx of nutrients and the simultaneous outflow of waste. A ... be altered drastically as a result of regulatory or signaling processes that occur within the cell