What is the odd one out of elements Li Na K Fe?

What is the odd one out of elements Li Na K Fe?
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Na, K, Li, which of the elements is the largest in size and which is the smallest in size ?

Description : Na, K, Li, which of the elements is the largest in size and which is the smallest in size ?

Last Answer : Among the elements Na, K, Li, Potassium ( K) is the largest in atomic size and Lithium ( Li) is the smallest in atomic size.

The increasing order of reactivity among group 1 elements is Li<Na<K<Rb<Cs whereas among the group 17 elements, it is F>Cl>Br>I. Explain.

Description : The increasing order of reactivity among group 1 elements is Li

Last Answer : Ans. In group 1 elements (alkali metals) the reactivity of the metals is mainly due to the electron releasing tendency of their atoms, which is related to ionization enthalpy, Since ... electron gain enthalpy. Since both of them decrease down the group, the reactivity therefore decreases.

The element from the elements Li, Na, K, having the least number of electron shells is

Description : The element from the elements Li, Na, K, having the least number of electron shells is

Last Answer : Li.

Number of metals among following which are obatained by electromentallurgy in molten state are Li, Ba, Na,Al, Fe, Cu, Pb, Sn, Ag, Zn, Ca, Mg.

Description : Number of metals among following which are obatained by electromentallurgy in molten state are Li, Ba, Na,Al, Fe, Cu, Pb, Sn, Ag, Zn, Ca, Mg.

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IN which set do all elements tend to form anions in binary ionic compounds Question 3 options N S I Ca B K K Ga Pb Fe Hg Na?

Description : IN which set do all elements tend to form anions in binary ionic compounds Question 3 options N S I Ca B K K Ga Pb Fe Hg Na?

Last Answer : Need answer

The deficiencies of micronutrients, not only affect growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport?(a) Co, Ni, Mo (b) Ca, K, Na (c) Mn, Co, Ca (d) Cu, Mn, Fe

Description : The deficiencies of micronutrients, not only affect growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both ... , Mo (b) Ca, K, Na (c) Mn, Co, Ca (d) Cu, Mn, Fe

Last Answer : d) Cu, Mn, Fe

Ionic mobility of `Li^(+)` is less than `Na^(+) and K^(+)` because

Description : Ionic mobility of `Li^(+)` is less than `Na^(+) and K^(+)` because

Last Answer : Ionic mobility of `Li^(+)` is less than `Na^(+) and K^(+)` because A. ionisation potential of lithium is ... `Li^(+)` D. `Li^(+)` keeps two electrons.

How many of following metals impart a characteristic colour to the Bunsen flame ? `(i) Na " " (ii) Li " " (iii) K " " (iv) Ba` `(v) Sr " " (vi) Mg " "

Description : How many of following metals impart a characteristic colour to the Bunsen flame ? `(i) Na " " (ii) Li " " (iii) K " " (iv) Ba` `(v) Sr " " (vi) Mg " "

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Which one occupies the lowermost position in the electromotive series of metals? (A) Aluminium (B) Noble metals (Ag, Pt, Au) (C) Zinc (D) Alkali metals (K, Na, Li)

Description : Which one occupies the lowermost position in the electromotive series of metals? (A) Aluminium (B) Noble metals (Ag, Pt, Au) (C) Zinc (D) Alkali metals (K, Na, Li)

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Among Li, Na, K, Rb, Cs, the element with lowest ionization energy is________

Description : Among Li, Na, K, Rb, Cs, the element with lowest ionization energy is________

Last Answer : Ans. Cs has lowest ionization enthalpy.

Which one of the alkali metals, forms only, the normal oxide, M2O on heating in air (1) Na (2) Rb (3) K (4) Li

Description : Which one of the alkali metals, forms only, the normal oxide, M2O on heating in air (1) Na (2) Rb (3) K (4) Li

Last Answer : Li

Which of the metallic ions is essential for blood clotting? (1) Na+ (2) Ca++ (3) K+ (4) Fe++

Description : Which of the metallic ions is essential for blood clotting? (1) Na+ (2) Ca++ (3) K+ (4) Fe++

Last Answer : (2) Ca++ Explanation: Clotting also requires: calcium ions (Ca2+)(which is why blood banks use a chelating agent to bind the calcium in donated blood so the blood will not clot in the bag). about a dozen other protein clotting factors.

Which of the following is an electrolytic cell A. lron * (ll) * (Fe) oxidized, aluminum (Al) reduced O B. Silver (Ag) oxidized, gold (Au) reduced C. Aluminum () oxidized (Zn) reduced LithiumD. (Li) oxidized, (Zn) reduced?

Description : Which of the following is an electrolytic cell A. lron * (ll) * (Fe) oxidized, aluminum (Al) reduced O B. Silver (Ag) oxidized, gold (Au) reduced C. Aluminum () oxidized (Zn) reduced LithiumD. (Li) oxidized, (Zn) reduced?

Last Answer : The answer is not c.

The reagent needed to convert 2-butyne to cis-2-butene is : (a) H2/Pt (b) H2/Lindlar’s catalyst (c) Li/NH3 (d) Na/NH3

Description : The reagent needed to convert 2-butyne to cis-2-butene is : (a) H2/Pt (b) H2/Lindlar’s catalyst (c) Li/NH3 (d) Na/NH3

Last Answer : H2/Lindlar’s catalyst

The major macro- elements are C; H; O; N; S; P; K; Ca; Mg and Fe ganic food. Such plants are called?

Description : The major macro- elements are C; H; O; N;  S; P; K; Ca; Mg and Fe ganic food. Such plants  are called?

Last Answer : Heterotrophic plants

Select the smaller ion form each of the following pairs :  a. K^+, Li^+ b. N^(3-), F^-

Description : Select the smaller ion form each of the following pairs :  a. K^+, Li^+ b. N^(3-), F^-

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How many of the following metals can be extracted buy carbon reduction method ? Na,Al,Mg,Sn,Fe,Pb,Zn,Ca

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Last Answer : How many of the following metals can be extracted buy carbon reduction method ? Na,Al,Mg,Sn,Fe,Pb,Zn,Ca

Among the metals Na,Mg ,Al,Zn,Cu,Sn ,Fe and Pb number of metals that can be ectreated by the eletroysis ,even from aqueos solution,is………………….

Description : Among the metals Na,Mg ,Al,Zn,Cu,Sn ,Fe and Pb number of metals that can be ectreated by the eletroysis ,even from aqueos solution,is………………….

Last Answer : Among the metals Na,Mg ,Al,Zn,Cu,Sn ,Fe and Pb number of metals that can be ectreated by the eletroysis ,even from aqueos solution,is………………….

Most bacteria do not require the ion a. Mg2+ b. Ca2+ c. Na+ d. Fe+2

Description : Most bacteria do not require the ion a. Mg2+ b. Ca2+ c. Na+ d. Fe+2

Last Answer : Ans: C

The metal used to recover copper from a solution of copper sulfate is - (1) Na (2) Ag (3) Hg (4) Fe

Description : The metal used to recover copper from a solution of copper sulfate is - (1) Na (2) Ag (3) Hg (4) Fe

Last Answer : (4) Fe Explanation: The metal used to recover copper from a solution of copper sulfate is Fe.

Which mineral is an essential part of thyroxin a. Fe b. Mg c. Iodine d. Na

Description : Which mineral is an essential part of thyroxin a. Fe b. Mg c. Iodine d. Na

Last Answer : Iodine

1The elements of the second period of the Periodic Table are given below: Li Be B C N O F (a) Give reason to explain why atomic radii decrease from Li to F. (b) Identify the most (i) metallic and (ii)non-metallic element. -Science

Description : 1The elements of the second period of the Periodic Table are given below: Li Be B C N O F (a) Give reason to explain why atomic radii decrease from Li to F. (b) Identify the most (i) metallic and (ii)non-metallic element. -Science

Last Answer : a) It is because nuclear charge increases due to increase in atomic number, therefore, force of attraction between nucleus and valence electrons increases, i.e. effective nuclear charge increases, hence ... element is ‘F’ because it can gain electrons easily due to smallest atomic size.

From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. (c) The element with smallest ionic radius. (d) The element with six electrons in the valence shell. (e) The element which is a liquid at room temperature. (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.

Description : From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. ( ... . (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.

Last Answer : Ans. (a). The element chlorine (Cl) has the highest negative electron gain enthalpy. (b). The element cesium (Cs) has lowest ionization enthalpy. (c). The element fluorine F has lowest atomic radius. (d ... zero group (or group 18). (g). The element carbon (C) forms the largest number of compounds.

The transition function for the language L = {w|na(w) and nb(w) are both odd} is given by: δ(q0, a)=q1 ; δ(q0, b)=q2 δ(q1, a)=q0 ; δ(q1, b)=q3 δ(q2, a)=q3 ; δ(q2, b)=q0 δ(q3, a)=q2 ; δ(q3, b)=q1

Description : The transition function for the language L = {w|na(w) and nb(w) are both odd} is given by: δ(q0, a)=q1 ; δ(q0, b)=q2 δ(q1, a)=q0 ; δ(q1, b)=q3 δ(q2, a)=q3 ; δ(q2, b ... the automata are: (A) q0 and q0 respectively (B) q0 and q1 respectively (C) q0 and q2 respectively (D) q0 and q3 respectively 

Last Answer : (D) q0 and q3 respectively

If 1 mL of a `KMnO_(4)` solution react with 0.140g `Fe^(2+)` and if 1 mL of `KHV_(2)O_(4)`. `H_(2C_(2)O_(4)` solution react with o.1 mL of previous `K

Description : If 1 mL of a `KMnO_(4)` solution react with 0.140g `Fe^(2+)` and if 1 mL of `KHV_(2)O_(4)`. `H_(2C_(2)O_(4)` solution react with o.1 mL of previous `K

Last Answer : If 1 mL of a `KMnO_(4)` solution react with 0.140g `Fe^(2+)` and if 1 mL of `KHV_(2)O_(4)`. `H_(2C_( ... 15/6 mL B. 13/16 C. `11/14` D. None of these

Which of the following is present In Chlorophyll molecule? (1) Win (2) Mg (3) Fe (4) K

Description : Which of the following is present In Chlorophyll molecule? (1) Win (2) Mg (3) Fe (4) K

Last Answer : (2) Mg Explanation: Chlorophyll is the green pigment found in most plants, responsible for light absorption to provide energy by photosynthesis. Magnesium is the sole metallic constituent of the chlorophyll.

White eye of rice is caused due to deficiency of a. Ca b. B c. Fe d. K

Description : White eye of rice is caused due to deficiency of a. Ca b. B c. Fe d. K

Last Answer : c. Fe

FeO (s) + CO (g) = Fe (s) + CO2 (g), k = 0. 435 at 1173E; at equilibrium, what will be the number of moles of CO gas required to reduce one mole of FeO at 1173 K? (A) 1.0 (B) 1.3 (C) 2.3 (D) 3.3

Description : FeO (s) + CO (g) = Fe (s) + CO2 (g), k = 0. 435 at 1173E; at equilibrium, what will be the number of moles of CO gas required to reduce one mole of FeO at 1173 K? (A) 1.0 (B) 1.3 (C) 2.3 (D) 3.3

Last Answer : Option D

Which of the following is present in Chlorophyll molecule ? (1) Mn (2) Mg (3) Fe (4) K

Description : Which of the following is present in Chlorophyll molecule ? (1) Mn (2) Mg (3) Fe (4) K

Last Answer : Mg

Newlands' table, the elements were placed with the halogens - (1) Mn and As (2) Fe and Se (3) Ce and La (4) Co and Ni

Description : Newlands' table, the elements were placed with the halogens - (1) Mn and As (2) Fe and Se (3) Ce and La (4) Co and Ni

Last Answer : (4) Co and Ni Explanation: Newlands' Law of Octaves suffered from lot of limitations, In order to fit elements into his table, Newlands ad justed two elements in the same slot, but also put some unlike elements under the same note.

Depolarization of axolemma during nerve conduction takes place because of (a) equal amount of Na+ and K+ move out across axolemma (b) Na+ move inside and K+ move more outside (c) more Na+ outside (d) none of these.

Description : Depolarization of axolemma during nerve conduction takes place because of (a) equal amount of Na+ and K+ move out across axolemma (b) Na+ move inside and K+ move more outside (c) more Na+ outside (d) none of these.

Last Answer : (b) Na+ move inside and K+ move more outside

In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive (a) K+ into the cell (b) K+ and Na+ out of the cell (c) Na+ into the cell (d) Na+ out of the cell.

Description : In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive (a) K+ into the cell (b) K+ and Na+ out of the cell (c) Na+ into the cell (d) Na+ out of the cell.

Last Answer : c) Na+ into the cell

At resting stage permeability of `K^(+)` ion is more comparatively `Na^(+)` ion through axonal membrane

Description : At resting stage permeability of `K^(+)` ion is more comparatively `Na^(+)` ion through axonal membrane

Last Answer : At resting stage permeability of `K^(+)` ion is more comparatively `Na^(+)` ion through axonal membrane

At resting stage permeability of `K^(+)` ion is more comparatively `Na^(+)` ion through axonal membrane

Description : At resting stage permeability of `K^(+)` ion is more comparatively `Na^(+)` ion through axonal membrane

Last Answer : At resting stage permeability of `K^(+)` ion is more comparatively `Na^(+)` ion through axonal membrane

Ano ang gustong ipahiwatig ng salitang upos sa Mga hamak na dakila ni lope k.Santos?

Description : Ano ang gustong ipahiwatig ng salitang upos sa Mga hamak na dakila ni lope k.Santos?

Last Answer : pweding malaman kung ano ang sagot?

Na+/K+-ATPase along with ATP requires (A) Ca (B) Mn (C) Mg (D) Cl

Description : Na+/K+-ATPase along with ATP requires (A) Ca (B) Mn (C) Mg (D) Cl

Last Answer : Answer : C

The predominant cation of plasma is (A) Na+ (B) K+ (C) Ca+ (D) Mg++

Description : The predominant cation of plasma is (A) Na+ (B) K+ (C) Ca+ (D) Mg++

Last Answer : Answer : A

What is the principal cation of intracellular fluid? (A) K+ (B) Na+ (C) Ca2+ (D) Mg2+

Description : What is the principal cation of intracellular fluid? (A) K+ (B) Na+ (C) Ca2+ (D) Mg2+

Last Answer : Answer : A

The principal cation of extra cellular fluid: (A) K+ (B) Na+ (C) H+ (D) Ca2+

Description : The principal cation of extra cellular fluid: (A) K+ (B) Na+ (C) H+ (D) Ca2+

Last Answer : Answer : B

Gastric lipae is activated in the presence of (A) Bile salts (B) Cu++ (C) K+ (D) Na+

Description : Gastric lipae is activated in the presence of (A) Bile salts (B) Cu++ (C) K+ (D) Na+

Last Answer : Answer : A

For the activity of amylase which of the following is required as co-factor? (A) HCO3 (B) Na+ (C) K+ (D) Cl

Description : For the activity of amylase which of the following is required as co-factor? (A) HCO3 (B) Na+ (C) K+ (D) Cl

Last Answer : Answer : D

NH+ 4 aminates glutamate to form glutamine requiring ATP and (A) K+ (B) Na+ (C) Ca++ (D) Mg++

Description : NH+ 4 aminates glutamate to form glutamine requiring ATP and (A) K+ (B) Na+ (C) Ca++ (D) Mg++

Last Answer : Answer : D

Binding of acetylcholine to its receptors increases the permeability of cell membrane to (A) Ca++ (B) Na+ (C) K+ (D) Na+ and K+

Description : Binding of acetylcholine to its receptors increases the permeability of cell membrane to (A) Ca++ (B) Na+ (C) K+ (D) Na+ and K+

Last Answer : Answer : D

Binding of gamma-aminobutyric acid to its receptors in brain increases the permeability of cell membrane to (A) Cl– (B) Na+ (C) K+ (D) Ca++

Description : Binding of gamma-aminobutyric acid to its receptors in brain increases the permeability of cell membrane to (A) Cl– (B) Na+ (C) K+ (D) Ca++

Last Answer : Answer : A

The enzyme carbamoyl phosphate synthetase requires (A) Mg++ (B) Ca++ (C) Na+ (D) K+

Description : The enzyme carbamoyl phosphate synthetase requires (A) Mg++ (B) Ca++ (C) Na+ (D) K+

Last Answer : Answer : A

Renin converts casein to paracasein in presence of (A) Ca++ (B) Mg++ (C) Na+ (D) K+

Description : Renin converts casein to paracasein in presence of (A) Ca++ (B) Mg++ (C) Na+ (D) K+

Last Answer : Answer : A

Pyruvate kinase requires ______ ions for maximum activity. (A) Na+ (B) K+ (C) Ca2+ (D) Mg2+

Description : Pyruvate kinase requires ______ ions for maximum activity. (A) Na+ (B) K+ (C) Ca2+ (D) Mg2+

Last Answer : B

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

Last Answer : Answer: c, d The selectivity of the plasma membrane, although impressive, cannot account for the nonequilibrium composition of living cells. A cell can be maintained in a nonequilibrium state only by ... to drive the transport of a second species such as protons, calcium, amino acids, or glucose

The most electropositive element among the following is (a) Na (b) Ca (c) K (d) Cs

Description : The most electropositive element among the following is (a) Na (b) Ca (c) K (d) Cs

Last Answer : Ans:(d)