Description : From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. (A) 5 (B) 50 (C) 500 (D) 5000
Last Answer : (A) 5
Description : Which of the following is used as an atmospheric pollution indicator
Last Answer : Which of the following is used as an atmospheric pollution indicator A. Lepidoptera B. Lichens C. Lycopersicon D. Lycopodium
Description : Recent reports of acid rain in some industrial cities are due to the effect of atmospheric pollution by :
Last Answer : Recent reports of acid rain in some industrial cities are due to the effect of atmospheric ... and other carbonaceous fuels in paucity of oxygen
Description : The fuel -substance that causes minimum atmospheric pollution is (a) hydrogen (b) kerosene oil (c) coke (d) gasoline
Last Answer : Ans:(a)
Description : 'Green House Effect' means – (1) Pollution in houses in tropical regions (2) Trapping of solar energy due to atmospheric oxygen (3) Trapping of solar energy due to atmospheric carbon dioxide (4) Cultivation in green houses so as to check pollution
Last Answer : (3) Trapping of solar energy due to atmospheric carbon dioxide Explanation: The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric ... fuels and clearing of forests, have intensified the natural greenhouse effect, causing global warming.
Description : 'Green House Effect' means - (1) cultivation of crops in green house to conserve heat (2) trapping of solar energy due to carbon dioxide gases (3) trapping of solar energy by earth upper surface (4) increase of heat due to atmospheric pollution
Last Answer : (2) trapping of solar energy due to carbon dioxide gases Explanation: Green House Effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases and is re-radiated in all directions.
Description : Green House Effect' means (1) Pollution in houses in tropical region (2) Prevention of ultraviolet radiation by the ozone layer (3) Trapping of solar energy due to atmospheric gases (4) Damage to green painted buildings
Last Answer : (3) Trapping of solar energy due to atmospheric gases Explanation: The greenhouse effect occurs when Earth's atmosphere traps solar radiation because of the presence of certain gases, causing the ... , nitrous oxide (N2O) and other gases, ac-cording to the Environmental Protection Agency (EPA
Description : People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude to 5400 metres have around 8 million. This is because at high altitude ... required amount of O2 to survive (d) there is more UV radiation which enhances RBC production.
Last Answer : (c) atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive
Description : Atmospheric pollution caused by the exhaust gas of supersonic transport air-crafts is mostly in the atmospheric region called (A) Thermosphere (B) Stratosphere (C) Troposphere (D) Mesosphere
Last Answer : (B) Stratosphere
Description : Green House Effect’ means (1) Pollution in houses in tropical region (2) Prevention of ultraviolet radiation by the ozone layer (3) Trapping of solar energy due to atmospheric gases (4) Damage to green painted buildings
Last Answer : Trapping of solar energy due to atmospheric gases
Description : ‘Green House Effect’ means (1) cultivation of crops in green house to conserve heat (2) trapping of solar energy due to carbon dioxide gases (3) trapping of solar energy by earth upper surface (4) increase of heat due to atmospheric pollution
Last Answer : trapping of solar energy due to carbon dioxide gases
Description : 'Green House Effect' means (1) Pollution in houses in tropical regions (2) Trapping of solar energy due to atmospheric oxygen (3) Trapping of solar energy due to atmospheric carbon dioxide (4) Cultivation in green houses so as to check pollution
Last Answer : Trapping of solar energy due to atmospheric carbon dioxide
Description : Assertion :- In `NH_(4)NO_(3)`, the oxidation number of the two N-atoms is not equal. Reason :- One N atom is present in the ammonium ion while the ot
Last Answer : Assertion :- In `NH_(4)NO_(3)`, the oxidation number of the two N-atoms is not equal. Reason : ... is False. D. If both Assertion & Reason are False.
Description : The number of electrons required to balance the following equation are : `NO_(3)^(-)+4H^(+)rarr2H_(2)O+NO`
Last Answer : The number of electrons required to balance the following equation are : `NO_(3)^(-)+4H^(+)rarr2H_(2)O+ ... left side C. 3 on right D. 5 on left side
Description : In the balanced equation - `[Zn+H^(+)+NO_(3)^(-)rarr NH_(4)^(-) rarr NH_(4)^(+) +Zn^(+2)+H_(2)O]` coefficient of `NH_(4)^(+)` is :-
Last Answer : In the balanced equation - `[Zn+H^(+)+NO_(3)^(-)rarr NH_(4)^(-) rarr NH_(4)^(+) +Zn^(+2)+H_(2)O]` coefficient ... (4)^(+)` is :- A. 4 B. 3 C. 2 D. 1
Description : For the redox reaction `Zn+NO_(3)^(-)rarr Zn^(2+)+NH_(4)^(-)` is basic medium, coefficients of `Zn, NO_(3)^(-) and OH^(-)` in the balanced equation re
Last Answer : For the redox reaction `Zn+NO_(3)^(-)rarr Zn^(2+)+NH_(4)^(-)` is basic medium, coefficients of `Zn, NO_(3)^(-) ... . 7, 4, 1 C. 4, 1, 10 D. 1, 4, 10
Description : The number of electrons required to balanced the following equation- `NO_(3)^(-)+4H^(+)+e^(-)rarr2H_(2)O+NO` is -
Last Answer : The number of electrons required to balanced the following equation- `NO_(3)^(-)+4H^(+)+e^(-)rarr2H_(2)O+NO` is - A. 5 B. 4 C. 3 D. 2
Description : 446 g of PbO , 46 g of `NO_(2)` and 16 g of `O_(2)` are allowed to react according to the equation :- `PbO+2NO_(2)+(1)/(2)O_(2)toPb(NO_(3))_(2)` The a
Last Answer : 446 g of PbO , 46 g of `NO_(2)` and 16 g of `O_(2)` are allowed to react according to the equation :- ... 331 g B. 662 g C. 165.5 g D. none of these
Description : The `-NO_(2)` group in an aromatic ring deactivates the ortho and para positions for an electrophilic attack. When `-NO_(2)` group is present at ortho
Last Answer : The `-NO_(2)` group in an aromatic ring deactivates the ortho and para positions for an electrophilic attack. When ` ... product (I) is : A. B. C. D.
Last Answer : The `-NO_(2)` group in an aromatic ring deactivates the ortho and para positions for an electrophilic attack. When ` ... product (H) is : A. B. C. D.
Last Answer : The `-NO_(2)` group in an aromatic ring deactivates the ortho and para positions for an electrophilic attack. When ` ... product (G) is : A. B. C. D.
Description : `Ph-NO_(2) overset(Sn//HCl)rarr underset("HCl, " 0^(@)C-5^(@)C)overset(NaNO_(2))rarr underset(Ph-OH)overset("Basic medium")rarr "Product Y"` Find the
Last Answer : `Ph-NO_(2) overset(Sn//HCl)rarr underset("HCl, " 0^(@)C-5^(@)C)overset(NaNO_(2) ... report your answer as `underset(2)overset("Molecular weight")rarr`
Description : A nitrile X is treated with `LiAIH_(4)` to obtain compound `Y(C_(2)H_(9)N)` reacts with benzensulfonyl chloride to give `Y(C_(13)H_(13)NO_(2)S)` which
Last Answer : A nitrile X is treated with `LiAIH_(4)` to obtain compound `Y(C_(2)H_(9)N)` reacts with benzensulfonyl chloride ... (3)CH_2COO^(-))(CH_(3)NH_(3)^(+))`
Description : The following compounds are heated (i) `KNO_(3)` (ii) `Cu(NO_(3))_(2)` (iii) `Pb(NO_(3))_(2)` (iv) `NH_(4)NO_(3)` . Which of the following statement/s
Last Answer : The following compounds are heated (i) `KNO_(3)` (ii) `Cu(NO_(3))_(2)` (iii) `Pb(NO_(3)) ... and (iii) liberate `O_(2)` D. All statements are correct
Description : Aqueous solution of how many of the following species turn blue limtus red ? (i) `SF_(4)` (ii) `PCl_(3)` (iii) `H_(2)O` (iv) `NO_(2)Cl` (v) `SF_(6)` (
Last Answer : Aqueous solution of how many of the following species turn blue limtus red ? (i) `SF_(4)` (ii) `PCl_(3)` ( ... )` (xii) `COCl_(2)` (viii) `C Cl_(4)`
Description : In how many of the following reactions `N_(2)` gas may be released `{:((a) NH_(4)NO_(2) overset(Delta)rarr,(b) (NH_(4))_(2) Cr_(2)O_(7) overset(Delta)
Last Answer : In how many of the following reactions `N_(2)` gas may be released `{:((a) NH_(4)NO_(2) overset(Delta) ... i) Ba(N_(3))_(2) overset(Delta) rarr):}`
Description : Number of gaseous oxides among the following at room temperature is: (a) `N_(2)O` (b) `NO` (c) `N_(2)O_(3)` (d) `NO_(2)` (e) `N_(2)O_(5)` (f) `P_(4)O_
Last Answer : Number of gaseous oxides among the following at room temperature is: (a) `N_(2)O` (b) `NO` (c) `N_(2)O_(3)` ( ... (4)O_(10)` (h) `SO_(2)` (i) `SO_(3)`
Description : `NO_(2)` can be prepared by heating :
Last Answer : `NO_(2)` can be prepared by heating : A. `NH_(4)NO_(3)` B. `NaNO_(3)` C. `Pb(NO_(3))_(2)` D. `KNO_(3)`
Description : The unbalanced equation for the reaction of `P_(4)S_(3)` with nitrate in aqueous acidic medium is given below : `P_(4)S_(3)+NO_(3)^(-)rarrH_(3)PO_(4)+
Last Answer : The unbalanced equation for the reaction of `P_(4)S_(3)` with nitrate in aqueous acidic medium is given below : `P_(4) ... A. 18 B. `8//3` C. 8 D. 28
Description : `28 NO_(3)^(-)+3As_(2)S_(3)+4H_(2)O rarr 6AsO_(4)^(3-)+28NO+9SO_(4)^(2-)+H^(+)` What will be the equivalent mass of As_(2)S_(3)` in the above reaction
Last Answer : `28 NO_(3)^(-)+3As_(2)S_(3)+4H_(2)O rarr 6AsO_(4)^(3-)+28NO+9SO_(4)^(2-)+H^(+)` What will be the equivalent ... (M)/(4)` C. `(M)/(24)` D. `(M)/(28)`
Description : The magnetic moment for two complexes of empirical formula `Ni(NH_(3))_(4)(NO_(3))_(2).2H_(2)O` is zero and 2.84 BM respectively. The second complex i
Last Answer : The magnetic moment for two complexes of empirical formula `Ni(NH_(3))_(4)(NO_(3))_(2 ... . D. It produces three-fold freezing point depression.
Last Answer : The magnetic moment for two complexes of empirical formula `Ni(NH_(3))_(4)(NO_(3))_(2).2H_(2)O` is zero and ... (H_(2)O)_(2)](NO_(3))_(2)`, octahedral
Last Answer : The magnetic moment for two complexes of empirical formula `Ni(NH_(3))_(4)(NO_(3))_(2).2H_(2)O` is zero ... two B. zero, zero C. two, zero D. two ,two
Description : Which of the following statementss about ammonium cerium (IV) nitrate, `(NH_(4))_(2)[Ce(NO_(3))_(6)]` is false ?
Last Answer : Which of the following statementss about ammonium cerium (IV) nitrate, `(NH_(4))_(2)[Ce( ... icosahedron D. The solution is used as oxidizing agent.
Description : How many isomers are possible for a compound with formula, `[Rn(en)_(2)Cl(NO_(2))]` ?
Last Answer : How many isomers are possible for a compound with formula, `[Rn(en)_(2)Cl(NO_(2))]` ? A. 2 B. 4 C. 6 D. 8
Description : The total number of possible isomers of sqaure-planar `[Pt(Cl)(NO_(2))(NO_(3))(SCN)]^(2-)` is :
Last Answer : The total number of possible isomers of sqaure-planar `[Pt(Cl)(NO_(2))(NO_(3))(SCN)]^(2-)` is : A. 8 B. 12 C. 16 D. 24
Description : Which one of the following complexes will consume more equivalent of aqueous solution of `Ag(NO_(3))` ?
Last Answer : Which one of the following complexes will consume more equivalent of aqueous solution of `Ag(NO_(3))` ? A. `Na_(3) ... ` D. `Na_(2)[CrCl_(5)(H_(2)O)]`
Description : IUPAC name `[Co(NH_(3))_(5)(NO_(2))]Cl_(2)` is
Last Answer : IUPAC name `[Co(NH_(3))_(5)(NO_(2))]Cl_(2)` is A. Nitrito-N-pentaamminecobalt( ... -cobalt(II)chloride D. Pentaamminenitrito-N-cobalt (III) chloride
Description : Among the species given below, the total number of diamagnetic species is _________. H atom, `NO_(2)` monomer,`O_(2)^(-)` (superoxide), dimeric sulphu
Last Answer : Among the species given below, the total number of diamagnetic species is _________. H atom, `NO_(2)` monomer,`O_( ... 4)],K_(2)MnO_(4), K_(2)CrO_(4)`
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 : The ionisation isomer of `[Cr(H_(2)O)_(4) Cl (NO_(2))]Cl`
Last Answer : The ionisation isomer of `[Cr(H_(2)O)_(4) Cl (NO_(2))]Cl` A. `[Cr(H_(2)O)_(4)(O_(2)N)]Cl_(2)` B. `[Cr( ... D. `[Cr(H_(2)O)_(4)Cl_(2)(NO_(2))].H_(2)O`
Description : How many isomeric forms are possible for the octahedral complex. `[Rh(en)_(2)(NO_(2))(SCN)]^(+)` ?
Last Answer : How many isomeric forms are possible for the octahedral complex. `[Rh(en)_(2)(NO_(2))(SCN)]^(+)` ?
Description : Total number of paramagnetic complexes which are inner orbital complexes : `(i) [Cr(NH_(3))_(6)]Cl_(3) " " (ii)[Co(NH_(3))_(6)](NO_(3))_(2)" " (iii)[N
Last Answer : Total number of paramagnetic complexes which are inner orbital complexes : `(i) [Cr(NH_(3))_(6)]Cl_(3) " " (ii)[ ... (4)]" " Na_(4)[Fe(CN)_(5)(NOS)]`
Description : The number of geometrical isomers of `[Co(NH_(3))_(3)(NO_(3))_(3)]` is
Last Answer : The number of geometrical isomers of `[Co(NH_(3))_(3)(NO_(3))_(3)]` is
Description : `[Co(NH_(3))_(5)NO_(2)]Cl_(2) and [Co(NH_(3))_(5)ONO]Cl_(2)` are related to each other as :
Last Answer : `[Co(NH_(3))_(5)NO_(2)]Cl_(2) and [Co(NH_(3))_(5)ONO]Cl_(2)` are ... isomers B. linkage isomers C. coordination isomers D. ionisation isomers