37299
A mixture when heated with conc. \({H_2}S{O_4}\) with \(Mn{O_2}\) brown fumes are formed due to
1 \(B{r^ - }\)
2 \(NO_3^ - \)
3 \(C{l^ - }\)
4 \({I^ - }\)
Explanation:
(a) It is a lab method for the preparation of \(B{r_2}\) e.g. \(2\;KBr\; + \;Mn{O_2}\; + \;{H_2}S{O_4}\; \to \) \(\mathop {B{r_2}}\limits_{{\rm{Brown}}\;{\rm{gas}}} \; + \;2\;KHS{O_4}\; + \;MnS{O_4}\)
PRACTICAL CHEMISTRY
37300
A substance on treatment with dil \({H_2}S{O_4}\) liberates a colourless gas which produces(i) turbidity with baryta water and(ii) turns acidified dichromate solution green.The reaction indicates the presence of
37301
In the test of sulphate radical, the white precipitate of sulphate is soluble in
1 Conc. \(HCl\)
2 Conc. \({H_2}S{O_4}\)
3 Conc. \(HN{O_3}\)
4 None of these
Explanation:
(d)As the sulphate radical is a strong oxidising agent, it is insoluble in acids and so detection of sulphate radicle requires no other reagent.
PRACTICAL CHEMISTRY
37302
To an inorganic mixture dil. \({H_2}S{O_4}\) is added in cold; colourless, odourless gas is evolved. The mixture contains
1 Sulphite
2 Acetate
3 Nitrite
4 Carbonate
Explanation:
(d)Sulphite radicle will give a burning sulphur odour. Acetate radical will give a sweet, venegar odour. Nitrite will give a reddish brown gas. Carbonate will give a colourless, odourless gas, i.e. \(CO_2\).
PRACTICAL CHEMISTRY
37303
Which reagent is used to remove \(SO_4^ - \)and \(C{l^ - }\)
1 \(BaS{O_4}\)
2 \(NaOH\)
3 \(Pb{(N{O_3})_2}\)
4 \(KOH\)
Explanation:
(c) \(PbS{O_4}\) and \(PbC{l_2}\) are insoluble in cold water hence the reagent \(Pb{(N{O_3})_2}\) is used to remove \(SO_4^{2 - }\) and \(C{l^ - }\)
37299
A mixture when heated with conc. \({H_2}S{O_4}\) with \(Mn{O_2}\) brown fumes are formed due to
1 \(B{r^ - }\)
2 \(NO_3^ - \)
3 \(C{l^ - }\)
4 \({I^ - }\)
Explanation:
(a) It is a lab method for the preparation of \(B{r_2}\) e.g. \(2\;KBr\; + \;Mn{O_2}\; + \;{H_2}S{O_4}\; \to \) \(\mathop {B{r_2}}\limits_{{\rm{Brown}}\;{\rm{gas}}} \; + \;2\;KHS{O_4}\; + \;MnS{O_4}\)
PRACTICAL CHEMISTRY
37300
A substance on treatment with dil \({H_2}S{O_4}\) liberates a colourless gas which produces(i) turbidity with baryta water and(ii) turns acidified dichromate solution green.The reaction indicates the presence of
37301
In the test of sulphate radical, the white precipitate of sulphate is soluble in
1 Conc. \(HCl\)
2 Conc. \({H_2}S{O_4}\)
3 Conc. \(HN{O_3}\)
4 None of these
Explanation:
(d)As the sulphate radical is a strong oxidising agent, it is insoluble in acids and so detection of sulphate radicle requires no other reagent.
PRACTICAL CHEMISTRY
37302
To an inorganic mixture dil. \({H_2}S{O_4}\) is added in cold; colourless, odourless gas is evolved. The mixture contains
1 Sulphite
2 Acetate
3 Nitrite
4 Carbonate
Explanation:
(d)Sulphite radicle will give a burning sulphur odour. Acetate radical will give a sweet, venegar odour. Nitrite will give a reddish brown gas. Carbonate will give a colourless, odourless gas, i.e. \(CO_2\).
PRACTICAL CHEMISTRY
37303
Which reagent is used to remove \(SO_4^ - \)and \(C{l^ - }\)
1 \(BaS{O_4}\)
2 \(NaOH\)
3 \(Pb{(N{O_3})_2}\)
4 \(KOH\)
Explanation:
(c) \(PbS{O_4}\) and \(PbC{l_2}\) are insoluble in cold water hence the reagent \(Pb{(N{O_3})_2}\) is used to remove \(SO_4^{2 - }\) and \(C{l^ - }\)
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PRACTICAL CHEMISTRY
37299
A mixture when heated with conc. \({H_2}S{O_4}\) with \(Mn{O_2}\) brown fumes are formed due to
1 \(B{r^ - }\)
2 \(NO_3^ - \)
3 \(C{l^ - }\)
4 \({I^ - }\)
Explanation:
(a) It is a lab method for the preparation of \(B{r_2}\) e.g. \(2\;KBr\; + \;Mn{O_2}\; + \;{H_2}S{O_4}\; \to \) \(\mathop {B{r_2}}\limits_{{\rm{Brown}}\;{\rm{gas}}} \; + \;2\;KHS{O_4}\; + \;MnS{O_4}\)
PRACTICAL CHEMISTRY
37300
A substance on treatment with dil \({H_2}S{O_4}\) liberates a colourless gas which produces(i) turbidity with baryta water and(ii) turns acidified dichromate solution green.The reaction indicates the presence of
37301
In the test of sulphate radical, the white precipitate of sulphate is soluble in
1 Conc. \(HCl\)
2 Conc. \({H_2}S{O_4}\)
3 Conc. \(HN{O_3}\)
4 None of these
Explanation:
(d)As the sulphate radical is a strong oxidising agent, it is insoluble in acids and so detection of sulphate radicle requires no other reagent.
PRACTICAL CHEMISTRY
37302
To an inorganic mixture dil. \({H_2}S{O_4}\) is added in cold; colourless, odourless gas is evolved. The mixture contains
1 Sulphite
2 Acetate
3 Nitrite
4 Carbonate
Explanation:
(d)Sulphite radicle will give a burning sulphur odour. Acetate radical will give a sweet, venegar odour. Nitrite will give a reddish brown gas. Carbonate will give a colourless, odourless gas, i.e. \(CO_2\).
PRACTICAL CHEMISTRY
37303
Which reagent is used to remove \(SO_4^ - \)and \(C{l^ - }\)
1 \(BaS{O_4}\)
2 \(NaOH\)
3 \(Pb{(N{O_3})_2}\)
4 \(KOH\)
Explanation:
(c) \(PbS{O_4}\) and \(PbC{l_2}\) are insoluble in cold water hence the reagent \(Pb{(N{O_3})_2}\) is used to remove \(SO_4^{2 - }\) and \(C{l^ - }\)
37299
A mixture when heated with conc. \({H_2}S{O_4}\) with \(Mn{O_2}\) brown fumes are formed due to
1 \(B{r^ - }\)
2 \(NO_3^ - \)
3 \(C{l^ - }\)
4 \({I^ - }\)
Explanation:
(a) It is a lab method for the preparation of \(B{r_2}\) e.g. \(2\;KBr\; + \;Mn{O_2}\; + \;{H_2}S{O_4}\; \to \) \(\mathop {B{r_2}}\limits_{{\rm{Brown}}\;{\rm{gas}}} \; + \;2\;KHS{O_4}\; + \;MnS{O_4}\)
PRACTICAL CHEMISTRY
37300
A substance on treatment with dil \({H_2}S{O_4}\) liberates a colourless gas which produces(i) turbidity with baryta water and(ii) turns acidified dichromate solution green.The reaction indicates the presence of
37301
In the test of sulphate radical, the white precipitate of sulphate is soluble in
1 Conc. \(HCl\)
2 Conc. \({H_2}S{O_4}\)
3 Conc. \(HN{O_3}\)
4 None of these
Explanation:
(d)As the sulphate radical is a strong oxidising agent, it is insoluble in acids and so detection of sulphate radicle requires no other reagent.
PRACTICAL CHEMISTRY
37302
To an inorganic mixture dil. \({H_2}S{O_4}\) is added in cold; colourless, odourless gas is evolved. The mixture contains
1 Sulphite
2 Acetate
3 Nitrite
4 Carbonate
Explanation:
(d)Sulphite radicle will give a burning sulphur odour. Acetate radical will give a sweet, venegar odour. Nitrite will give a reddish brown gas. Carbonate will give a colourless, odourless gas, i.e. \(CO_2\).
PRACTICAL CHEMISTRY
37303
Which reagent is used to remove \(SO_4^ - \)and \(C{l^ - }\)
1 \(BaS{O_4}\)
2 \(NaOH\)
3 \(Pb{(N{O_3})_2}\)
4 \(KOH\)
Explanation:
(c) \(PbS{O_4}\) and \(PbC{l_2}\) are insoluble in cold water hence the reagent \(Pb{(N{O_3})_2}\) is used to remove \(SO_4^{2 - }\) and \(C{l^ - }\)
37299
A mixture when heated with conc. \({H_2}S{O_4}\) with \(Mn{O_2}\) brown fumes are formed due to
1 \(B{r^ - }\)
2 \(NO_3^ - \)
3 \(C{l^ - }\)
4 \({I^ - }\)
Explanation:
(a) It is a lab method for the preparation of \(B{r_2}\) e.g. \(2\;KBr\; + \;Mn{O_2}\; + \;{H_2}S{O_4}\; \to \) \(\mathop {B{r_2}}\limits_{{\rm{Brown}}\;{\rm{gas}}} \; + \;2\;KHS{O_4}\; + \;MnS{O_4}\)
PRACTICAL CHEMISTRY
37300
A substance on treatment with dil \({H_2}S{O_4}\) liberates a colourless gas which produces(i) turbidity with baryta water and(ii) turns acidified dichromate solution green.The reaction indicates the presence of
37301
In the test of sulphate radical, the white precipitate of sulphate is soluble in
1 Conc. \(HCl\)
2 Conc. \({H_2}S{O_4}\)
3 Conc. \(HN{O_3}\)
4 None of these
Explanation:
(d)As the sulphate radical is a strong oxidising agent, it is insoluble in acids and so detection of sulphate radicle requires no other reagent.
PRACTICAL CHEMISTRY
37302
To an inorganic mixture dil. \({H_2}S{O_4}\) is added in cold; colourless, odourless gas is evolved. The mixture contains
1 Sulphite
2 Acetate
3 Nitrite
4 Carbonate
Explanation:
(d)Sulphite radicle will give a burning sulphur odour. Acetate radical will give a sweet, venegar odour. Nitrite will give a reddish brown gas. Carbonate will give a colourless, odourless gas, i.e. \(CO_2\).
PRACTICAL CHEMISTRY
37303
Which reagent is used to remove \(SO_4^ - \)and \(C{l^ - }\)
1 \(BaS{O_4}\)
2 \(NaOH\)
3 \(Pb{(N{O_3})_2}\)
4 \(KOH\)
Explanation:
(c) \(PbS{O_4}\) and \(PbC{l_2}\) are insoluble in cold water hence the reagent \(Pb{(N{O_3})_2}\) is used to remove \(SO_4^{2 - }\) and \(C{l^ - }\)