Match List I with List II
LIST I (Precipitating reagent and conditions) |
LIST II (Cation) |
||
---|---|---|---|
A. | $$ \mathrm{NH}_4 \mathrm{Cl}+\mathrm{NH}_4 \mathrm{OH} $$ |
I. | $$\mathrm{Mn^{2+}}$$ |
B. | $$ \mathrm{NH}_4 \mathrm{OH}+\mathrm{Na}_2 \mathrm{CO}_3 $$ |
II. | $$\mathrm{Pb^{2+}}$$ |
C. | $$ \mathrm{NH}_4 \mathrm{OH}+\mathrm{NH}_4 \mathrm{Cl}+\mathrm{H}_2 \mathrm{~S} \text { gas } $$ |
III. | $$\mathrm{Al^{3+}}$$ |
D. | dilute $$\mathrm{HCl}$$ | IV. | $$\mathrm{Sr^{2+}}$$ |
Choose the correct answer from the options given below:
Given below are two statements :
Statement I : Gallium is used in the manufacturing of thermometers.
Statement II : A thermometer containing gallium is useful for measuring the freezing point $$(256 \mathrm{~K})$$ of brine solution.
In the light of the above statements, choose the correct answer from the options given below :
The density of '$$x$$' $$\mathrm{M}$$ solution ('$$x$$' molar) of $$\mathrm{NaOH}$$ is $$1.12 \mathrm{~g} \mathrm{~mL}^{-1}$$, while in molality, the concentration of the solution is $$3 \mathrm{~m}$$ ( 3 molal). Then $$x$$ is
(Given : Molar mass of $$\mathrm{NaOH}$$ is $$40 \mathrm{~g} / \mathrm{mol}$$)
Match List I with List II
LIST I (Compound/Species) |
LIST II (Shape/Geometry) |
||
---|---|---|---|
A. | $$\mathrm{SF_4}$$ | I. | Tetrahedral |
B. | $$\mathrm{BrF_3}$$ | II. | Pyramidal |
C. | $$\mathrm{BrO_3^-}$$ | III. | See saw |
D. | $$\mathrm{NH_4^+}$$ | IV. | Bent T-Shape |
Choose the correct answer from the options given below: