Assertion:- `ZN^(+2)` is more polarising than `Mg^(+2)`. Reason :- A pseudo inert gas configuration `Zn^(+2)` has high `Z_(eff)`, Then inert gas confi

1 Answer

Answer :

Assertion:- `ZN^(+2)` is more polarising than `Mg^(+2)`. Reason :- A pseudo inert gas ... is False. D. If both Assertion & Reason are false

Related questions

Description : Which has the same electronic configuration as of inert gas ?

Last Answer : Which has the same electronic configuration as of inert gas ? A. `Ag^(3+)` B. `Cu^(2+)` C. `Pb^(4+)` D. `Ti^(4+)`

Description : Assertion: (A) Ethers are relatively inert when compared to `C_(2)H_(5)OH` Reason (R): The hybridization of C and O in `CH_(3)-O-CH_(3) is SP^(3)`

Last Answer : Assertion: (A) Ethers are relatively inert when compared to `C_(2)H_(5)OH` Reason (R): The hybridization of ... R is false D. A is false but R is true

Description : Pick up the correct statement from the following: (A) The minimum frequency of light for which no electrons are emitted, is called threshold frequency (B) Polarising angle of glass is 57.5° (C) At the polarising angle, the reflected and refracted rays are orthogonal (D) All the above

Last Answer : Answer: Option D

Description : For heat engine operating between two temperatures (T1>T2), what is the maximum efficiency attainable?  A. Eff = 1 – (T2/T1)  B. Eff = 1 - (T1/T2)  C. Eff = T1 - T2  D. Eff = 1 - (T2/T1)^2

Last Answer : Eff = 1 – (T2/T1)

Description : Soils with high pH are generally deficient in:? a Zn and Mn b B and Fe c Cu and Mo d Ca and Mg

Last Answer : a Zn and Mn

Description : A 75-year-old man had been receiving gentamicin (an aminoglycoside antibiotic) to treat an urinary tract infection. After three months of therapy patient's serum creatinine levels were 10 mg/ ... Type II allergic reaction b)Type III allergic reaction c) Pseudo allergic reaction d) Overdose toxicity

Last Answer : d) Overdose toxicity 

Description : Assertion :- `Cr^(+2)` is a reducing agent and `Mn^(+3)` is oxidising agent. Reason :- `Mn^(+3)` has `d^(5)` configuration.

Last Answer : Assertion :- `Cr^(+2)` is a reducing agent and `Mn^(+3)` is oxidising agent. Reason :- `Mn ... is False. D. If both Assertion & Reason are False.

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

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

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………………….

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.

Last Answer : 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 : What of the following reactions demonstrates a synthesis reaction A) Mg plus H2SO4 and gt MgSO4 plus H2 B) 2NaCl and gt 2Na plus Cl2 C) C plus O2 and gt CO2 D) Zn plus 2HCl and gt ZnCl2 plus H2?

Last Answer : C+O2 →CO2

Description : Intestinal absorption of chromium is shared with (A) Mn (B) Mg (C) Ca (D) Zn

Last Answer : Answer : D

Description : The mitochondrial superoxide dismutase contains (A) Mg++ (B) Mn++ (C) Co++ (D) Zn++

Last Answer : Answer : B

Description : Rennin acts on casein of milk in infants in presence of (A) Mg++ (B) Zn++ (C) Co++ (D) Ca++

Last Answer : Answer : D

Description : Citrate is converted to isocitrate by aconitase which contains (A) Ca++ (B) Fe++ (C) Zn++ (D) Mg++

Last Answer : B

Description : Which of the following is required for crystallization and storage of the hormone insulin? (A) Mn++ (B) Mg++ (C) Ca++ (D) Zn++

Last Answer : D

Description : Brass is an alloy of : (1) Cu, Al and Zn (2) Cu and Sn (3) Cu and Zn (4) Al and Mg

Last Answer : (3) Cu and Zn Explanation: Brass is an alloy made of copper and zinc. The proportions of zinc and copper can be varied to cre-ate a range of brasses with varying properties. By comparison, bronze is principally an alloy of copper and tin.

Description : Which of the following metals are present in hemoglobin and chlorophyll, respectively? (1) Fe and Mg (2) Fe and Zn (3) Mg and Zn (4) Zn and Mg

Last Answer : (1) Fe and Mg Explanation: Fe and Mg metals are present in hemoglobin and Chlorophyll respectively.

Description : Which one is an essential mineral, not constituent of any enzyme but stimulates the activity of many enzymes? (a) Zn (b) Mn (c) K (d) Mg

Last Answer : (c) K

Description : Which of the following is required for crystallization and storage of the hormone insulin? (A) Mn++ (B) Mg++ (C) Ca++ (D) Zn++

Last Answer : Mn++

Description : Brass is an alloy of : (1) Cu, Al and Zn (2) Cu and Sn (3) Cu and Zn (4) Al and Mg

Last Answer : Cu and Zn

Description : Why are Be & Mg inert to O2& H2O?

Last Answer : Ans Beryllium and magnesium are chemically inert to oxygen and water because of the formation of an oxide film on their surface. However, powdered beryllium burns brilliantly on ignition in air to ... and nitride. They also react with water with increasing vigour even in cold to form hydroxides.

Description : Why are Be & Mg inert to O2& H2O? 

Last Answer : Beryllium and magnesium are kinetically inert to oxygen and water because of the formation of an oxide film on their surface. However, powdered beryllium burns brilliantly on ignition in air to give BeO ... nitride. They also react with water with increasing vigour even in cold to form hydroxides. 

Description : 4. A three-phase, four-wire system having \( 250 V \) line-to-neutral has the following loads connected between the respective lines and the neutral. Calculate the current in the neutral wire?\[Z_{R}=20 \angle 0^{\circ} ... Z_{Y}=20 \angle 35^{\circ} \Omega, Z_{B}=20 \angle-55^{\circ} \Omega\](10M)

Last Answer : 4. A three-phase, four-wire system having \( 250 V \) line-to-neutral has the following loads connected ... =20 \angle-55^{\circ} \Omega \] (10M)

Description : 4. A three-phase, four-wire system having \( 250 V \) line-to-neutral has the following loads connected between the respective lines and the neutral. Calculate the current in the neutral wire?\[Z_{R}=20 \angle 0^{\circ} ... Z_{Y}=20 \angle 35^{\circ} \Omega, Z_{B}=20 \angle-55^{\circ} \Omega\](10M)

Last Answer : 4. A three-phase, four-wire system having \( 250 V \) line-to-neutral has the following loads connected ... =20 \angle-55^{\circ} \Omega \] (10M)

Description : 4. A three-phase, four-wire system having \( 250 V \) line-to-neutral has the following loads connected between the respective lines and the neutral. Calculate the current in the neutral wire?\[Z_{R}=20 \angle 0^{\circ} ... Z_{Y}=20 \angle 35^{\circ} \Omega, Z_{B}=20 \angle-55^{\circ} \Omega\](10M)

Last Answer : 4. A three-phase, four-wire system having \( 250 V \) line-to-neutral has the following loads connected ... =20 \angle-55^{\circ} \Omega \] (10M)

Description : A radioactive nucleus can decay by two different processes. The mean value period for the process is `Z_(1)` and that for the second process is `Z_(2)

Last Answer : A radioactive nucleus can decay by two different processes. The mean value period for the process is `Z_(1)` and that ... (1)Z_(2))/(Z_(1) + Z_(2))`

Description : Assertion:- In MgO electrovalency of Mg is 2. Reason :- Mg shares two electrons with oxygen.

Last Answer : Assertion:- In MgO electrovalency of Mg is 2. Reason :- Mg shares two electrons with oxygen. A. If ... False. D. If both Assertion & Reason are false

Description : Assertion: In acute constipation, purgative containing magnesium salts are generally used. Reason: The osmotic effect of `Mg^(2+)` in the intestinal l

Last Answer : Assertion: In acute constipation, purgative containing magnesium salts are generally used. Reason: The osmotic ... `Mg^(2+)` is absorbed very slowly

Description : Assertion :- `Zn(s)+Cu^(+2)(aq)rarr Zn^(+2)(aq)+Cu(s)` can be spilt into following half reactions `{:(Zn(s)rarrZn^(+2)+2e^(-),),(,"(Oxidation half rea

Last Answer : Assertion :- `Zn(s)+Cu^(+2)(aq)rarr Zn^(+2)(aq)+Cu(s)` can be spilt into following half ... Reason is False. D. If both Assertion & Reason are False.

Description : Assertion :- In the reaction `Zn(s)+cu^(+2)(aq)rarrZn^(+2)(aq)+Cu(s)` `Cu^(+2)` ions act as oxidising agent and Zn atoms act as a reducing agent. Reas

Last Answer : Assertion :- In the reaction `Zn(s)+cu^(+2)(aq)rarrZn^(+2)(aq)+Cu(s)` `Cu^(+2)` ions ... the Reason is False. D. If both Assertion & Reason are False.

Description : Assertion:- `Mg^(2+)` is smaller atomic size then `F^(-)` Resaon :- `Mg^(2+)` has less number of `e^(-)s` than `F^(-)`

Last Answer : Assertion:- `Mg^(2+)` is smaller atomic size then `F^(-)` Resaon :- `Mg^(2+)` has less ... Reason is False. D. If both Assertion & Reason are false

Description : Give Reason (i)N2 is inert at room temperature. (ii) Overlapping of S orbital with any other orbital forms sigma bonds.

Last Answer : Ans .Due to high bond order (3) , it has high bond dissociation energy ,which is not possible at room temperature (ii)Because s orbital has same electron distribution in all axis/ directions

Description : Give reason: Elements of group 18 or group zero are called inert or noble gases.

Last Answer : Elements of group 18 do not form chemical bond on their own with other elements as they have completed shells of electrons. They have no tendency to gain or lose electrons. Hence they are most un-reactive

Description : When lead-acid batteries are charging, they always give off hydrogen gas that is _____________. A. considered inert B. highly explosive C. extremely toxic D. heavier than air

Last Answer : Answer: B

Description : Assertion :- Lyophilic sol is more stable than lyophobic sol. Reason :- Lyophilic sol have greater solvation energy then lyophobic sol.

Last Answer : Assertion :- Lyophilic sol is more stable than lyophobic sol. Reason :- Lyophilic sol have greater ... D. If both Assertion & Reason are False.

Description : Which of the following anions are producing same gas on treatment with `(Zn+ " dil." H_(2)SO_(4))`. `I :SO_(3)^(2-) " " II : HSO_(3)^(-) " " III : S^(

Last Answer : Which of the following anions are producing same gas on treatment with `(Zn+ " dil." H_(2)SO_(4))`. `I : ... I, II, III and IV D. I, III and IV only

Description : Which of the following produces H2 gas, when reacts with acid? (1) Zn (2) S (3) C (4) O

Last Answer : (1) Zn Explanation: As, Zinc is a metal so it will produce H2 gas when reacts with acid. Active metals react with acids to produce hydrogen because they are above hydrogen in the activity series.

Description : What is inert gas ?

Last Answer : An element that does not participate in a chemical reaction is called inert gas. 6 inert gases: Helium ( He), Neon ( Ne) , Argon ( Ar), Krypton ( Kr), Xenon ( Xe), Radon ( Rn)

Description : How many atoms are in the molecule of inert gas ?

Last Answer : Inert gas has 1 atom in its molecule .

Last Answer : The elements in group 18 of the periodic table are called inert gases

Description : Radioactive inert gas is :

Last Answer : Radioactive inert gas is : A. technetium B. radon C. xenon D. curium

Description : Which of the following inert gas(es) form(s) clathrate compoud(s) with quinol?

Last Answer : Which of the following inert gas(es) form(s) clathrate compoud(s) with quinol? A. (A) Helium B. (B) Xenon C. (C) Krypton D. Neon

Description : The inert gas abundantly found in atmosphere is:

Last Answer : The inert gas abundantly found in atmosphere is: A. (A) Ar B. (B) Kr C. (C) He D. (D) Xe

Description : First stable compound of inert gas was prepared by

Last Answer : First stable compound of inert gas was prepared by A. Rayleigh and Ramsay B. Bartlett C. Frankland and Lockyer D. Cavendish

Description : Number of unpaired electrons in inert gas is

Last Answer : Number of unpaired electrons in inert gas is A. Zero B. 8 C. 4 D. 18

Description : Which of the following gas is/are called inert gas ?

Last Answer : Which of the following gas is/are called inert gas ? A. He B. Ne C. Kr D. All of these

Description : The inert gas predicted from the solar spectrum is

Last Answer : The inert gas predicted from the solar spectrum is A. Ne B. Kr C. Xe D. He

Description : Which of the following inert gas is available only as a product in the radioactive disintegrations ?

Last Answer : Which of the following inert gas is available only as a product in the radioactive disintegrations ? A. He B. Ar C. Rn D. Kr

Description : The least abundant inert gas in the atmosphere is by volume

Last Answer : The least abundant inert gas in the atmosphere is by volume A. Ne B. He C. Ar D. Xe