(c) Disperse dye are usually applied in the form of dispersion of finely divided dye in a soap solution in the presence of Phenol, Cresol, Benzoic acid etc. They are mainly used to dye decron, nylon, synthetic fibre. Example Celliton (blue).
CHEMISTRY IN EVERYDAY LIFE
38442
Malachite green is a direct dye for silk and wool. It is prepared by condensing
1 Benzaldehyde and dimethyl aniline
2 Carbonyl chloride and dimethyl aniline
3 Benzene diazonium chloride with dimethyl aniline
4 None of the above
Explanation:
(a) Malachite green prepared by the condensation of Benzaldehyde and dimethyl aniline.
CHEMISTRY IN EVERYDAY LIFE
38443
Fluorescin, a well known dye is obtained by the reactions of
1 Phthalic anhydride and phenol
2 Phthalic anhydride and resorcinol
3 Succinic acid and resorcinol
4 Phthalic anhydride and catechol
Explanation:
(b)Fluorescin is obtained by the reaction of Phthalic anhydride and resorcinol.
CHEMISTRY IN EVERYDAY LIFE
38444
Indigo shows cis-trans isomerism. Which is the stable form of Indigo
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CHEMISTRY IN EVERYDAY LIFE
38441
Which one is disperse dye
1 Congo red
2 Alizarin
3 Celliton
4 None of these
Explanation:
(c) Disperse dye are usually applied in the form of dispersion of finely divided dye in a soap solution in the presence of Phenol, Cresol, Benzoic acid etc. They are mainly used to dye decron, nylon, synthetic fibre. Example Celliton (blue).
CHEMISTRY IN EVERYDAY LIFE
38442
Malachite green is a direct dye for silk and wool. It is prepared by condensing
1 Benzaldehyde and dimethyl aniline
2 Carbonyl chloride and dimethyl aniline
3 Benzene diazonium chloride with dimethyl aniline
4 None of the above
Explanation:
(a) Malachite green prepared by the condensation of Benzaldehyde and dimethyl aniline.
CHEMISTRY IN EVERYDAY LIFE
38443
Fluorescin, a well known dye is obtained by the reactions of
1 Phthalic anhydride and phenol
2 Phthalic anhydride and resorcinol
3 Succinic acid and resorcinol
4 Phthalic anhydride and catechol
Explanation:
(b)Fluorescin is obtained by the reaction of Phthalic anhydride and resorcinol.
CHEMISTRY IN EVERYDAY LIFE
38444
Indigo shows cis-trans isomerism. Which is the stable form of Indigo
(c) Disperse dye are usually applied in the form of dispersion of finely divided dye in a soap solution in the presence of Phenol, Cresol, Benzoic acid etc. They are mainly used to dye decron, nylon, synthetic fibre. Example Celliton (blue).
CHEMISTRY IN EVERYDAY LIFE
38442
Malachite green is a direct dye for silk and wool. It is prepared by condensing
1 Benzaldehyde and dimethyl aniline
2 Carbonyl chloride and dimethyl aniline
3 Benzene diazonium chloride with dimethyl aniline
4 None of the above
Explanation:
(a) Malachite green prepared by the condensation of Benzaldehyde and dimethyl aniline.
CHEMISTRY IN EVERYDAY LIFE
38443
Fluorescin, a well known dye is obtained by the reactions of
1 Phthalic anhydride and phenol
2 Phthalic anhydride and resorcinol
3 Succinic acid and resorcinol
4 Phthalic anhydride and catechol
Explanation:
(b)Fluorescin is obtained by the reaction of Phthalic anhydride and resorcinol.
CHEMISTRY IN EVERYDAY LIFE
38444
Indigo shows cis-trans isomerism. Which is the stable form of Indigo
(c) Disperse dye are usually applied in the form of dispersion of finely divided dye in a soap solution in the presence of Phenol, Cresol, Benzoic acid etc. They are mainly used to dye decron, nylon, synthetic fibre. Example Celliton (blue).
CHEMISTRY IN EVERYDAY LIFE
38442
Malachite green is a direct dye for silk and wool. It is prepared by condensing
1 Benzaldehyde and dimethyl aniline
2 Carbonyl chloride and dimethyl aniline
3 Benzene diazonium chloride with dimethyl aniline
4 None of the above
Explanation:
(a) Malachite green prepared by the condensation of Benzaldehyde and dimethyl aniline.
CHEMISTRY IN EVERYDAY LIFE
38443
Fluorescin, a well known dye is obtained by the reactions of
1 Phthalic anhydride and phenol
2 Phthalic anhydride and resorcinol
3 Succinic acid and resorcinol
4 Phthalic anhydride and catechol
Explanation:
(b)Fluorescin is obtained by the reaction of Phthalic anhydride and resorcinol.
CHEMISTRY IN EVERYDAY LIFE
38444
Indigo shows cis-trans isomerism. Which is the stable form of Indigo