Among the metals Ti,V,W,Zr th and Au the number of metals purified van arkel method are…….

Among the metals Ti,V,W,Zr th and Au the number of metals purified van arkel method are…….
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Among the metals Ti,V,W,Zr th and Au the number of metals purified van arkel method are…….
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`Ti` can be purified by Van Arkel process. `TiI_(4)` is a volatile compound which decomposes at a high temperature.

Description : `Ti` can be purified by Van Arkel process. `TiI_(4)` is a volatile compound which decomposes at a high temperature.

Last Answer : `Ti` can be purified by Van Arkel process. `TiI_(4)` is a volatile compound which decomposes at a ... D. Statement-1 is false but Statement -2 is true

Van Arkel method of purification of metals involves converting the metal to

Description : Van Arkel method of purification of metals involves converting the metal to

Last Answer : Van Arkel method of purification of metals involves converting the metal to A. Volatile ... stable compound D. non-volatile unstable compound

Van Arkel method of purification of metals involves converting the metal to

Description : Van Arkel method of purification of metals involves converting the metal to

Last Answer : Van Arkel method of purification of metals involves converting the metal to A. Volatile stable ... . Volatile unstable compound D. None of these

Assertion : Zirconium can be purificed by Van Arkel method. Reason : `ZrI_(4)` is volatile and decomposed at `1800 K`.

Description : Assertion : Zirconium can be purificed by Van Arkel method. Reason : `ZrI_(4)` is volatile and decomposed at `1800 K`.

Last Answer : Assertion : Zirconium can be purificed by Van Arkel method. Reason : `ZrI_(4)` is volatile and decomposed at `1800 K`.

Which of the following pari of metals is purified by VanArkel method

Description : Which of the following pari of metals is purified by VanArkel method

Last Answer : Which of the following pari of metals is purified by VanArkel method A. Ga and In B. Zr and Ti C. Ag and Au D. Ni and Fe

Heavy water used in the nuclear reactors to slow down the speed of neutrons is (A) Highly purified water (B) A compound of oxygen and deuterium (C) Water having dissolved salts of heavy metals (D) None of these

Description : Heavy water used in the nuclear reactors to slow down the speed of neutrons is (A) Highly purified water (B) A compound of oxygen and deuterium (C) Water having dissolved salts of heavy metals (D) None of these

Last Answer : (B) A compound of oxygen and deuterium

(A) Au,Pt,Ag etc are found in free state (R ) The metals which are noble and chemically less reactive are found in free state

Description : (A) Au,Pt,Ag etc are found in free state (R ) The metals which are noble and chemically less reactive are found in free state

Last Answer : (A) Au,Pt,Ag etc are found in free state (R ) The metals which are noble and chemically less reactive ... D. If (A) is incorrect but (R ) is correct

Leaching can be used for the extraction of which metals (i) Pb (ii) Al (iii) Ag (iv) Au

Description : Leaching can be used for the extraction of which metals (i) Pb (ii) Al (iii) Ag (iv) Au

Last Answer : Leaching can be used for the extraction of which metals (i) Pb (ii) Al (iii) Ag (iv) Au A. (ii) (iii) and ... iii) C. (ii) and (iv) D. (iii) and (iv)

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)

Last Answer : (B) Noble metals (Ag, Pt, Au)

What is the atomic number of Zr ?

Description : What is the atomic number of Zr ?

Last Answer : The atomic number of Zr is 40

Which of the following metals is used in Space Crafts to withstand high temperatures? (1) Fe (2) Ti (3) Ni (4) Pb

Description : Which of the following metals is used in Space Crafts to withstand high temperatures? (1) Fe (2) Ti (3) Ni (4) Pb

Last Answer : (2) Ti Explanation: Titanium alloy, which has high corrosion resistance, high specific strength, and good heat resistance, is used for different spacecraft parts including outer fuel tank sheathing and wings. It is extremely strong at high temperatures.

Why are Ti+2 and other transition metals and their ions paramagnetic ?

Description : Why are Ti+2 and other transition metals and their ions paramagnetic ?

Last Answer :  Ans: These ions have unpaired electrons in d- subshell. 

Which of the following metals is used in Space Crafts to withstand high temperatures ? (1) Fe (2) Ti (3) Ni (4) Pb

Description : Which of the following metals is used in Space Crafts to withstand high temperatures ? (1) Fe (2) Ti (3) Ni (4) Pb

Last Answer : Ti

General pivot point rotation can be expressed as a.T(zr,yr).R(θ).T(-zr,-yr) = R(xr,yr,θ) b.T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ) c.T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ) d.T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ)

Description : General pivot point rotation can be expressed as a.T(zr,yr).R(θ).T(-zr,-yr) = R(xr,yr,θ) b.T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ) c.T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ) d.T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ)

Last Answer : b.T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ)

How many energy levels contain electrons in an atom of zirconium (Zr)?

Description : How many energy levels contain electrons in an atom of zirconium (Zr)?

Last Answer : 4

Why do Zr and Hf show similar properties ?

Description : Why do Zr and Hf show similar properties ?

Last Answer :  Ans It is due to similar ionic size which due to lanthanide contraction . 

Bonneville, Early Badger, Arkel are the improved varieties of (A) Frenchbean (B) Pea (C) Sunflower (D) Soybean

Description : Bonneville, Early Badger, Arkel are the improved varieties of (A) Frenchbean (B) Pea (C) Sunflower (D) Soybean

Last Answer : (B) Pea

Cold conc. `HNO_(3)` will completely dissolve: (i) Pb (ii) `Pb_(3)O_(4)` (iii) Fe (iv) Sn (v) Mg (vi) MgO (vii) Hg (viii) Au (ix) Ag (x) Pt

Description : Cold conc. `HNO_(3)` will completely dissolve: (i) Pb (ii) `Pb_(3)O_(4)` (iii) Fe (iv) Sn (v) Mg (vi) MgO (vii) Hg (viii) Au (ix) Ag (x) Pt

Last Answer : Cold conc. `HNO_(3)` will completely dissolve: (i) Pb (ii) `Pb_(3)O_(4)` (iii) Fe (iv) Sn (v) Mg (vi) MgO (vii) Hg (viii) Au (ix) Ag (x) Pt

Cold conc. `HNO_(3)` will completely dissolve: (i) Pb (ii) `Pb_(3)O_(4)` (iii) Fe (iv) Sn (v) Mg (vi) MgO (vii) Hg (viii) Au (ix) Ag (x) Pt

Description : Cold conc. `HNO_(3)` will completely dissolve: (i) Pb (ii) `Pb_(3)O_(4)` (iii) Fe (iv) Sn (v) Mg (vi) MgO (vii) Hg (viii) Au (ix) Ag (x) Pt

Last Answer : Cold conc. `HNO_(3)` will completely dissolve: (i) Pb (ii) `Pb_(3)O_(4)` (iii) Fe (iv) Sn (v) Mg (vi) MgO (vii) Hg (viii) Au (ix) Ag (x) Pt

Among the following, the number of elements showing only one non-zero oxidation state is: O,Cl,F,N,P,Sn,Tl,Na,Ti

Description : Among the following, the number of elements showing only one non-zero oxidation state is: O,Cl,F,N,P,Sn,Tl,Na,Ti

Last Answer : Among the following, the number of elements showing only one non-zero oxidation state is: O,Cl,F,N,P,Sn,Tl,Na,Ti

Which of the following complexes will mostly likely abosorb visible light ? (At nos. Sc=21,Ti=22,V=23,Zn=30)

Description : Which of the following complexes will mostly likely abosorb visible light ? (At nos. Sc=21,Ti=22,V=23,Zn=30)

Last Answer : Which of the following complexes will mostly likely abosorb visible light ? (At nos. Sc=21,Ti=22,V=23,Zn=30) A. `[Sc ... )` D. `[Zn(NH_(3))_(6)]^(2+)`

A colloidal solution can be purified by the following method :

Description : A colloidal solution can be purified by the following method :

Last Answer : A colloidal solution can be purified by the following method : A. dialysis B. peptization C. filtration D. oxidation

Statement-I : Lead, tin and bismuth are purified by liquation method. Statement-II : Lead, tin and bismuth have low m.p as compared to impurities.

Description : Statement-I : Lead, tin and bismuth are purified by liquation method. Statement-II : Lead, tin and bismuth have low m.p as compared to impurities.

Last Answer : Statement-I : Lead, tin and bismuth are purified by liquation method. Statement-II : Lead, tin and bismuth have low m.p as compared to impurities.

(A) Led, tin and bismuth are purified by liquation method. (R ) Lead, tin and bismuth have low m.p. as compared to impuriites.

Description : (A) Led, tin and bismuth are purified by liquation method. (R ) Lead, tin and bismuth have low m.p. as compared to impuriites.

Last Answer : (A) Led, tin and bismuth are purified by liquation method. (R ) Lead, tin and bismuth have low m.p. as ... D. If (A) is incorrect but (R ) is correct

Which of the following can be purified by the electrolytic method? (a) Sodium (Na) (b) Copper (Cu) (c) Boron (B) (d) Chlorine (C12)

Description : Which of the following can be purified by the electrolytic method? (a) Sodium (Na) (b) Copper (Cu) (c) Boron (B) (d) Chlorine (C12)

Last Answer : Ans:129

By which method aniline can be purified?

Description : By which method aniline can be purified?

Last Answer : By steam distillation.

For how many metals of `10^(th)`12 th and `14^(th)` groups in periodic chart, Extraction is possible by self - reduction mrthod ?

Description : For how many metals of `10^(th)`12 th and `14^(th)` groups in periodic chart, Extraction is possible by self - reduction mrthod ?

Last Answer : For how many metals of `10^(th)`12 th and `14^(th)` groups in periodic chart, Extraction is possible by self - reduction mrthod ?

List the elements of 15 th group of the periodic table. Name the distinct metals and non-metals of the group.

Description : List the elements of 15 th group of the periodic table. Name the distinct metals and non-metals of the group.

Last Answer : Nitrogen and phosphorous are non-metals. Arsenic and Antimony are metalloids, Bismuth is a metal.

One of the potential health effects of exposure to high levels of noise is called tinnitus (pron: ti - NI - tes), which means: w) a permanent loss of hearing. x) a persistent ringing or hissing in the ears after exposure. y) a temporary loss of hearing, especially of upper frequencies. z) abdominal discomfort from low frequency noise.

Description : One of the potential health effects of exposure to high levels of noise is called tinnitus (pron: ti - NI - tes), which means: w) a permanent loss of hearing. x) a persistent ringing ... ) a temporary loss of hearing, especially of upper frequencies. z) abdominal discomfort from low frequency noise.

Last Answer : ANSWER: X -- A PERSISTENT RINGING OR HISSING IN THE EARS AFTER EXPOSURE.

Which method of purification is represented by the following equations `Ti +2I_(2) overset(523K)rarr TiI_(4) overset(1700K)rarr Ti +2I_(2)`

Description : Which method of purification is represented by the following equations `Ti +2I_(2) overset(523K)rarr TiI_(4) overset(1700K)rarr Ti +2I_(2)`

Last Answer : Which method of purification is represented by the following equations `Ti +2I_(2) overset(523K)rarr TiI_( ... B. Poling C. Can arkel D. zone refining

The transmission signal coding method of TI carrier is called a. Bipolar b. NRZ c. Manchester d. Binary

Description : The transmission signal coding method of TI carrier is called a. Bipolar b. NRZ c. Manchester d. Binary

Last Answer : Bipolar

If the velocity of an electron in `I^(st)` orbit of H is V, then what will be the velocity in `4^(th)` orbit of `Be^(+3)` :-

Description : If the velocity of an electron in `I^(st)` orbit of H is V, then what will be the velocity in `4^(th)` orbit of `Be^(+3)` :-

Last Answer : If the velocity of an electron in `I^(st)` orbit of H is V, then what will be the velocity in `4^(th)` orbit of ` ... . V B. `(V)/(4)` C. 16 V D. 4 V

Two protons are projected simultaneously from a fixed point with the same velocity v into a region, magnetic there exists a uniform magnetic field. Th

Description : Two protons are projected simultaneously from a fixed point with the same velocity v into a region, magnetic there exists a uniform magnetic field. Th

Last Answer : Two protons are projected simultaneously from a fixed point with the same velocity v into a region, magnetic there ... mv)/(qB)` D. `(mv)/(2qB)`

The 6 th of June 1944 is called __________ (A) V-Day (Victory Day). (B) D-Day (an important day). (C) L-Day (Labour Day). (D) C-Day (Constitution Day).

Description : The 6 th of June 1944 is called __________ (A) V-Day (Victory Day). (B) D-Day (an important day). (C) L-Day (Labour Day). (D) C-Day (Constitution Day).

Last Answer : (B) D-Day (an important day). 

Van der Waals derived an expression for the ‘pressure defect’, if the observed pressure is denoted as ‘p’ and volume is denoted as ‘V’, the gas pressure in the bulk of the gas is equal to: A. p + a/V; where a: constant for the particular gas B. p + a/(V²); where a: constant for the particular gas C. p + (a × V); where a: constant for the particular gas D. p + (a × V²); where a: constant for the particular gas

Description : Van der Waals derived an expression for the pressure defect', if the observed pressure is denoted as p' and volume is denoted as V', the gas pressure in the bulk of the gas is equal to: A. p + ... a: constant for the particular gas D. p + (a V²); where a: constant for the particular gas

Last Answer : p + a/(V²); where a: constant for the particular gas

Internal energy of a gas obeying Van-Der-Waals equation of state, [p + (a/v2)] (V - b) = RT, depends upon its (A) Pressure & temperature (B) Pressure & specific volume (C) Temperature & specific volume (D) Temperature only

Description : Internal energy of a gas obeying Van-Der-Waals equation of state, [p + (a/v2)] (V - b) = RT, depends upon its (A) Pressure & temperature (B) Pressure & specific volume (C) Temperature & specific volume (D) Temperature only

Last Answer : (A) Pressure & temperature

Is our "th" sound really so rare among the world's languages?

Description : Is our "th" sound really so rare among the world's languages?

Last Answer : I don’t find it particularly challenging. Not compared to say the Icelandic Þ or Dutch ‘gr’ sounds. In fact, I’m far better at pronouncing ‘th’ than my husband with his London accent, always coming out as ‘f’.

Rs x is divided among Mr Bilhari, Mr Narahari, and Mr Murahari. The share of Bilhari is one-fourth of the total money, the share of Murahari is one-th

Description : Rs x is divided among Mr Bilhari, Mr Narahari, and Mr Murahari. The share of Bilhari is one-fourth of the total money, the share of Murahari is one-th

Last Answer : Rs x is divided among Mr Bilhari, Mr Narahari, and Mr Murahari. The share of Bilhari is one-fourth ... and the share of Narahari is Rs 1200. Find x

Find the squares of the following number using the column method .Verify your resutl by finding th square using the usual method

Description : Find the squares of the following number using the column method .Verify your resutl by finding th square using the usual method

Last Answer : Find the squares of the following number using the column method .Verify your resutl by finding th square using the ... A. 26 B. 33 C. 45 D. 84

In your opinion where would you place Edward Van Halen among his peers?

Description : In your opinion where would you place Edward Van Halen among his peers?

Last Answer : He is nowhere near the top rankings of guitar players. Jeff Beck gave him some luke warm kudos: He was the great white hope when he did the solo on [Michael Jackson's] Beat It. I'd seen him, and ... was astonishing, he really can play. But he was on the booze, and objectionable a lot of the time.

What is the atomic number of Au ?

Description : What is the atomic number of Au ?

Last Answer : The atomic number of Au is 79

The nickname, "Fool's Gold," refers to which of th following? w) calcite x) apatite y) fluorite z) pyrite

Description : The nickname, "Fool's Gold," refers to which of th following? w) calcite x) apatite y) fluorite z) pyrite

Last Answer : ANSWER: Z -- PYRITE

Diamond and graphite are polymorphs of which of th following elements? w) magnesium x) carbon y) sulfur z) nitrogen

Description : Diamond and graphite are polymorphs of which of th following elements? w) magnesium x) carbon y) sulfur z) nitrogen

Last Answer : ANSWER: X -- CARBON

The jet-stream lies between which two layers of th earth's atmosphere? w) thermosphere and ionosphere x) mesosphere and thermosphere y) troposphere and stratosphere z) stratosphere and mesosphere

Description : The jet-stream lies between which two layers of th earth's atmosphere? w) thermosphere and ionosphere x) mesosphere and thermosphere y) troposphere and stratosphere z) stratosphere and mesosphere

Last Answer : ANSWER: Y -- TROPOSPHERE AND STRATOSPHERE

In geological studies, arkose contains which of th following minerals which gives it a reddish color? w) orthoclase x) calcite y) aragonite (pron: a-rag-o-nite) z) quartz

Description : In geological studies, arkose contains which of th following minerals which gives it a reddish color? w) orthoclase x) calcite y) aragonite (pron: a-rag-o-nite) z) quartz

Last Answer : ANSWER: W -- ORTHOCLASE

Which of the following liquid types would have th highest viscosity? w) low molecular mass-polar liquid x) high molecular mass-polar liquid y) low molecular mass-nonpolar liquid d high molecular mass-nonpolar liquid

Description : Which of the following liquid types would have th highest viscosity? w) low molecular mass-polar liquid x) high molecular mass-polar liquid y) low molecular mass-nonpolar liquid d high molecular mass-nonpolar liquid

Last Answer : ANSWER: X -- HIGH MOLECULAR MASS-POLAR LIQUID

How did the scientific method change the way scientists worked beginning in the 16 th century?

Description : How did the scientific method change the way scientists worked beginning in the 16 th century?

Last Answer : Need answer

The depreciation during the year 'n', in diminishing balance method of depreciation calculation, is calculated by multiplying a fixed percentage 'N' to the (A) Initial cost (B) Book value at the end of (n - 1)th year (C) Depreciation during the (n - 1)th year (D) Difference between initial cost and salvage value

Description : The depreciation during the year 'n', in diminishing balance method of depreciation calculation, is calculated by multiplying a fixed percentage 'N' to the (A) Initial cost (B) Book value at the end ... ) Depreciation during the (n - 1)th year (D) Difference between initial cost and salvage value

Last Answer : (B) Book value at the end of (n - 1)th year

What is the role of purified linseed oil in oil painting?

Description : What is the role of purified linseed oil in oil painting?

Last Answer : It makes the paint flow better. It’s the equivalent of using water with watercolors or acrylics.

Mass spectrometry- how to identify if the mass spectrograph of a purified sample is a certain chemical given main mass components?

Description : Mass spectrometry- how to identify if the mass spectrograph of a purified sample is a certain chemical given main mass components?

Last Answer : I really should know how to do that. I’m glad my AP Chem teacher doesn’t Fluther.