Dry distillation of calcium acetate results in the formation of_________________?
A. formaldehyde
B. acetaldehyde
C. methane
D. acetone
Submitted by :- Jamil Ahmed
mnsoomro
Which of the following is a symmetrical ketone___________________?
A. 3 – hexanone
B. acetone
C. butanone
D. 2-pentanone
Submitted by :- Jamil Ahmed
Which one exhibits aldol condensation____________________?
A. HCHO
B. C6H5CHO
C. Cl3CCHO
D. CH3COCH3
Submitted by :- Jamil Ahmed
Ethanal is prepared industrially by air oxidation of ethylene using palladium chloride as catalyst and _________ as promoter?
A. PdCl2
B. Cu2Cl2
C. CuCl2
D. PbCl2
Submitted by :- Jamil Ahmed
Aldehyde and ketone have same general formula for homologous series_________________?
A. CnH2nO2n
B. CnH2n
C. CnH2nO
D. CnH2nOn+1
Submitted by :- Jamil Ahmed
On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________?
A. pink
B. black
C. yellow
D. brick red
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Formalin H-CHO / CH2O consists of mixture of formaldehyde methyl alcohol and water Percentage Of Formaldehyde in it is________________?
A. 60%
B. 50%
C. 37%
D. 80%
Submitted by :- Jamil Ahmed
Formula of haloform is_________________?
A. HCOX
B. CX4
C. CHX3
D. CH3X
Submitted by :- Jamil Ahmed
Crystals of Na2CO3. 10H2O when exposed to air_________________?
A. Lose water and remain solid
B. Gain water and remain solid
C. Gain water and become liquid
D. Remains unchanged
Submitted by :- Jamil Ahmed
Ammonia may be prepared by heating ammonium chloride with_______________?
A. Water
B. NaCl
C. Aqueous sodium hydroxide
D. H2SO4
Submitted by :- Jamil Ahmed