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प्रश्न
Which of the following statements are correct for \[\ce{SO2}\] gas?
(i) It acts as bleaching agent in moist conditions.
(ii) It’s molecule has linear geometry.
(iii) It’s dilute solution is used as disinfectant.
(iv) It can be prepared by the reaction of dilute \[\ce{H2SO4}\] with metal sulphide.
उत्तर
(i) It acts as bleaching agent in moist conditions.
(iii) It’s dilute solution is used as disinfectant.
Explanation:
\[\ce{SO2}\] acts as a bleaching agent in presence of moisture.
This is due to reducing nature of \[\ce{SO2 + 2H2O -> H2SO4 + 2H}\]
Coloured matter + H `→` colourless matter. Its dilute solution is used as disinfectant.
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संबंधित प्रश्न
Give reasons for the following : (CH3)3 P = O exists but (CH3)3 N = O does not.
Arrange the following in the increasing order of property mentioned :
NH3, PH3, AsH3, SbH3, BiH3 (Base strength)
The correct decreasing order of basic strength is:
Which of the following has highest ionisation enthalpy?
Which of the following statements is wrong?
If chlorine gas is passed through hot NaOH solution, two changes are observed in the oxidation number of chlorine during the reaction. These are :
(i) 0 to +5
(ii) 0 to +3
(iii) 0 to –1
(iv) 0 to +1
Which of the following orders are correct as per the properties mentioned against each?
| (i) | \[\ce{As2O3 < SiO2 < P2O3 < SO2}\] | Acid strength. |
| (ii) | \[\ce{AsH3 < PH3 < NH3}\] | Enthalpy of vapourisation. |
| (iii) | \[\ce{S < O < Cl < F}\] | More negative electron gain enthalpy. |
| (iv) | \[\ce{H2O > H2S > H2Se > H2Te}\] | Thermal stability. |
Match the items of Columns I and II and mark the correct option.
| Column I | Column II | |
| (A) | Its partial hydrolysis does not | (1) He |
| (B) | It is used in modern diving apparatus | (2) XeF6 |
| (C) | It is used to provide inert atmosphere for filling electrical bulbs |
(3) XeF4 |
| (D) | Its central atom is in sp3d2 hybridisation | (4) Ar |
In which of the following compounds, metal is in lowest oxidation state?
In NH3 and PH3 the common is:-
