A gas of hydrogen - like ion is perpendicular in such a way that ions are only in the ground state and the first excite state. A monochromatic light o

A gas of hydrogen - like ion is perpendicular in such a way that ions are only in the ground state and the first excite state. A monochromatic light o
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A gas of hydrogen - like ion is perpendicular in such a way that ions are only in the ... Calculate the values of the maximum and minimum wavelengths.
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Monochromatic radiation of wavelength `lambda` is incident on a hydrogen sample in ground state. hydrogen atoms absorb a fraction of light and subsequ

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The energy required to excite an electron from the ground state of hydrogen atom to the first excited state, is

Description : The energy required to excite an electron from the ground state of hydrogen atom to the first excited state, is

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Which of the following is true when HCL is passed through water. (i) It does not ionize in the solution as it is a covalent compound (ii) It ionizes in the solution (iii) It gives both hydrogen and hydroxyl ions in the solution (iv) It forms hydronium ion in the solution due to the combination of hydrogen ion with water molecule. (a) (i) only (b) (iii) only (c) (ii) and (iv) only (d) (iii) and (iv)

Description : Which of the following is true when HCL is passed through water. (i) It does not ionize in the solution as it is a covalent compound (ii) It ionizes in the solution (iii) It gives both hydrogen and hydroxyl ions in the solution ... ) (i) only (b) (iii) only (c) (ii) and (iv) only (d) (iii) and (iv)

Last Answer : (c) (ii) and (iv) only

There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s) is/are true concerning energy converting transport? a. The site of energy conversion and transport in the plasma membrane involves the phospholipid component b. The Na+-K++-ATPase derives energy from hydrolysis of extracellular ATP c. In some systems, energy inherent in the transmembrane ion gradient can be used to drive transport of a second species d. Examples of species transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose

Description : There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s ... transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose

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What will most likely happen is a toxin causes the hydrogen ion pump to stop moving h plus ions outside the mitochondrial membranes of the bird's cells?

Description : What will most likely happen is a toxin causes the hydrogen ion pump to stop moving h plus ions outside the mitochondrial membranes of the bird's cells?

Last Answer : Need answer

Human urine is usually acidic because (a) potassium and sodium exchange generates acidity (b) hydrogen ions are actively secreted into the filtrate (c) the sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries (d) excreted plasma proteins are acidic.

Description : Human urine is usually acidic because (a) potassium and sodium exchange generates acidity (b) hydrogen ions are actively secreted into the filtrate (c) the sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries (d) excreted plasma proteins are acidic.

Last Answer : (b) hydrogen ions are actively secreted into the filtrate

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 the pH 8 solution. x) There are 1,000 times more hydrogen ions in the pH 5 solution. y) There are 3 times more hydrogen ions in the pH 8 solution. z) Cannot tell the difference between these two solutions by pH, since the numbers are so close.

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

Which of the following molecules or ions is NOT formed when K metal reacts with liquid CH3OH? Is it: w) potassium ion x) hydrogen ion y) methoxy ion z) hydrogen molecule

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A double ionised lithium atom is hydrogen like with atomic number `3` (i)Find the wavelength of the radiation to excite the electron in `Li^(++)`from

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A double ionised lithium atom is hydrogen like with atomic number `3` (i)Find the wavelength of the radiation to excite the electron in `Li^(++)`from

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It is caused by hydroxide ions in the material ∙ A. visible light absorption ∙ B. infrared absorption ∙ C. ultraviolet absorption ∙ D. ion resonance absorption

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Last Answer : D. ion resonance absorption

A gas of hydrogen like ions is prepared in a particular excited state A if emit photons havingwavelength equal to the wavelength of the first line of

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How can modal dispersion reduced entirely? ∙ A. Use a graded index fiber ∙ B. Use a single-mode fiber ∙ C. Use a monochromatic light source ∙ D. Use a very sensitive light detector

Description : How can modal dispersion reduced entirely? ∙ A. Use a graded index fiber ∙ B. Use a single-mode fiber ∙ C. Use a monochromatic light source ∙ D. Use a very sensitive light detector

Last Answer : Use a single-mode fiber

Chromatic dispersion can be eliminated by __________. ∙ A. using a monochromatic light source ∙ B. using a very small numerical aperture fiber ∙ C. using a graded-index fiber ∙ D. using a very sensitive photo detector

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Single frequency light is called ∙ A. pure ∙ B. intense ∙ C. coherent ∙ D. monochromatic

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Last Answer : ∙ b. Monochromatic and in-phase

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Last Answer : c. Coherent

Single-frequency light is called ∙ a. Pure ∙ b. Intense ∙ c. Coherent ∙ d. Monochromatic

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Last Answer : d. Monochromatic

Lasers are used to produce a) Intense beam of visible light b) monochromatic beam of visible light c) coherent beam of visible light d) All of them

Description : Lasers are used to produce a) Intense beam of visible light b) monochromatic beam of visible light c) coherent beam of visible light d) All of them

Last Answer : d) All of them

In Newton’s rings experiment, if monochromatic source of light is replaced by another monochromatic source of higher wavelength. What will be the effect on radius (or diameter)? (a) Radius (or diameter) will decrease (b) Radius (or diameter) will increase (c) There will be no effect (d) Radius (or diameter) will remain constant but there will be more brightness

Description : In Newton's rings experiment, if monochromatic source of light is replaced by another monochromatic source of higher wavelength. What will be the effect on radius (or diameter)? (a) Radius (or ... be no effect (d) Radius (or diameter) will remain constant but there will be more brightness

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Interference pattern is observed in wedge-shaped film for monochromatic light. Now monochromatic light is replaced by white light. What will be the effect on interference pattern? (a) It will turn to dark (b) It will turn to bright (c) Bands will disappear (d) It will be a mixture of all colors

Description : Interference pattern is observed in wedge-shaped film for monochromatic light. Now monochromatic light is replaced by white light. What will be the effect on interference pattern? (a) It will turn to dark (b) It will turn to bright (c) Bands will disappear (d) It will be a mixture of all colors

Last Answer : (d) It will be a mixture of all colors

In interference experiment, monochromatic light is replaced by white light, we will see (a) Uniform illumination of screen (b) Uniform darkness on the screen (c) Equally spaced dark and white bands (d) Few colored bands and then general illumination

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The phenomenon of Newton’s rings can be used to check the __________. A. Wavelength of monochromatic light B. phase coherence of two sources C. flatness of any glass surface D. velocity of light

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Last Answer : A. Wavelength of monochromatic light

In Fraunhofer diffraction wave front used is __________. A. Spherical B. Circular C. Plane D. Conical 71.In diffraction pattern of monochromatic light the bright bands formed are __________. A. of uniform intensity B. of non-uniform intensity C. of uniform width D. is of different colors

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Last Answer : A. of uniform intensity

In Michelson ‘s interferometer 100 fringes cross the field view when the movable mirror is displaced through 0.0248 mm. Calculate the wavelength of monochromatic light used A. 5896 A 0 B.5890 A 0 C.4000 A 0 D. 4890 A 0

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What is the highest order spectrum which may be seen with monochromatic light of wavelength 5000 A0by means of diffraction grating with 5000 lines/cm? A. 2 B. 4 C. 8 D. 16

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A parallel beam, of light of wavelength 100 nm passed through a sample of atomic hydrogen gas in ground state. (a) Assume that when a phton supplies s

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Last Answer : A parallel beam, of light of wavelength 100 nm passed through a sample of atomic hydrogen gas ... of radiation that may be detected by the detector.

Two ions having masses in the ratio `1 : 1` and charges `1 : 2` are projected into uniform magnetic field perpendicular to the field with speeds in th

Description : Two ions having masses in the ratio `1 : 1` and charges `1 : 2` are projected into uniform magnetic field perpendicular to the field with speeds in th

Last Answer : Two ions having masses in the ratio `1 : 1` and charges `1 : 2` are projected into uniform magnetic field perpendicular ... `2:3` C. `3:1` D. `1:4`

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

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

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The ease of adsorption of the hydrated alkali metal ions on ion-exchange resins follows the order:

Description : The ease of adsorption of the hydrated alkali metal ions on ion-exchange resins follows the order:

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To balance the bicarbonate ion loss in RBC the chloride ions move into RBC, it is known as :-

Description : To balance the bicarbonate ion loss in RBC the chloride ions move into RBC, it is known as :-

Last Answer : To balance the bicarbonate ion loss in RBC the chloride ions move into RBC, it is known as :- A. Chloride ... C. Bohr effect D. Both (1) and (2)

The number of moles of oxalate ions oxidised by one mole of `MnO_(4)^(-)` ion in acidic medium is :

Description : The number of moles of oxalate ions oxidised by one mole of `MnO_(4)^(-)` ion in acidic medium is :

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During the extraction of Ag and using a KCN solution and Zn, cyanide ions and Zn react with metal ion as respectively

Description : During the extraction of Ag and using a KCN solution and Zn, cyanide ions and Zn react with metal ion as respectively

Last Answer : During the extraction of Ag and using a KCN solution and Zn, cyanide ions and Zn react with metal ... acid C. A reducing agent D. A complexing agent

`XeO_(3)` forms xenate ion in alkaline medium. `XeO_(3) +NaOH rarr Na[HXeO_(4)]` But the xenate ions slowly disproportionate in alkaline solution as `

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How many sulfide ions surrounds the each lead ion?

Description : How many sulfide ions surrounds the each lead ion?

Last Answer : Need answer

Chloride shift is (A) H ions leaving the RBC in exchange of Cl- (B) Cl– leaving the RBC in exchange of bicarbonate (C) Bicarbonate ion returns to plasma and exchanged with chloride which shifts into the cell (D) Carbonic acid to the plasma

Description : Chloride shift is (A) H ions leaving the RBC in exchange of Cl- (B) Cl– leaving the RBC in exchange of bicarbonate (C) Bicarbonate ion returns to plasma and exchanged with chloride which shifts into the cell (D) Carbonic acid to the plasma

Last Answer : Answer : C

Which of the following statement(s) is/are true concerning cellular ion channels? a. Ion channels are transmembrane proteins that form pores that can conduct ions across the plasma membrane b. Ion channels are formed by membrane-spanning peptides that are arranged so that polar moieties line a central core c. Ion channel proteins undergo conformational changes between open states and closed states d. Ion channels can be blocked

Description : Which of the following statement(s) is/are true concerning cellular ion channels? a. Ion channels are transmembrane proteins that form pores that can conduct ions across the plasma membrane b. ... undergo conformational changes between open states and closed states d. Ion channels can be blocked

Last Answer : Answer: a, b, c, d Ion channels are transmembrane proteins that form pores that can conduct ions across the plasma membrane. Ion channels are formed by membrane-spanning peptides that are arranged ... be blocked by ions or organic compounds that enter the channel, bind there, and occlude the pore

During the nerve impulse transmission, following ion or ions may play significant roles D A. Sodium B. Potassium C. Chloride D. All of these

Description : During the nerve impulse transmission, following ion or ions may play significant roles D A. Sodium B. Potassium C. Chloride D. All of these

Last Answer : All of these

During the nerve impulse transmission, following ion or ions may play significant roles D A. Sodium B. Potassium C. Chloride D. All of these

Description : During the nerve impulse transmission, following ion or ions may play significant roles D A. Sodium B. Potassium C. Chloride D. All of these

Last Answer : All of these

The following are true about rods in darkness: a. there is tonic release of neurotransmitters b. the sodium ion channels are open c. the potassium ion channels are shut d. there is a net influx of sodium ions

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Last Answer : there is a net influx of sodium ions

Homolytic fission of covalent bond between carbon atoms will produce : (a) Two carbonium ions (b) Two molecules (c) Free radicals (d) Carbonium ion and carbanion

Description : Homolytic fission of covalent bond between carbon atoms will produce : (a) Two carbonium ions (b) Two molecules (c) Free radicals (d) Carbonium ion and carbanion

Last Answer : Free radicals

Which of the following terms denotes the polar molecules or negative ions clustered about a central positive ion? w) ligands x) isomers y) complex ions z) dipoles

Description : Which of the following terms denotes the polar molecules or negative ions clustered about a central positive ion? w) ligands x) isomers y) complex ions z) dipoles

Last Answer : ANSWER: W -- LIGAND

The most common complex ions have octahedral geometry. What is the coordination number of the central ion in an octahedral complex?

Description : The most common complex ions have octahedral geometry. What is the coordination number of the central ion in an octahedral complex?

Last Answer : ANSWER: SIX

Which of the following atoms or ions would be the smallest? w) sodium atom x) magnesium atom y) singly charged sodium ion z) doubly charged magnesium ion

Description : Which of the following atoms or ions would be the smallest? w) sodium atom x) magnesium atom y) singly charged sodium ion z) doubly charged magnesium ion

Last Answer : ANSWER: Z -- DOUBLY CHARGED MAGNESIUM ION

The theory of interionic attraction attributed to Debye and Hückel: w) was disproved by Arrhenius x) accounts quantitatively for the attraction between ions in dilute aqueous solutions y) does not account for kindered "ion-activity" z) accounts for intra-molecular polar bonds

Description : The theory of interionic attraction attributed to Debye and Hückel: w) was disproved by Arrhenius x) accounts quantitatively for the attraction between ions in dilute aqueous solutions y) does not account for kindered "ion-activity" z) accounts for intra-molecular polar bonds

Last Answer : ANSWER: X -- ACCOUNTS QUANTITATIVELY FOR THE ATTRACTION BETWEEN IONS IN DILUTE AQUEOUS SOLUTIONS

In a body-centered structure for cesium chloride how many nearest neighbor chloride ions surround a cesium ion?

Description : In a body-centered structure for cesium chloride how many nearest neighbor chloride ions surround a cesium ion?

Last Answer : ANSWER: 8

Four particles `alpha`-particle, deuteron and electron and a `CI^(-)` ion enter in a transverse magnetic field perpendicular to it with same kinetic e

Description : Four particles `alpha`-particle, deuteron and electron and a `CI^(-)` ion enter in a transverse magnetic field perpendicular to it with same kinetic e

Last Answer : Four particles `alpha`-particle, deuteron and electron and a `CI^(-)` ion enter in a ... shown in figure. Now match the following two columns.