Time Left:
600
sec
1. —CHO group represents
A. Ketone
B. Aldehyde
C. Alcohol
D. Carboxylic acid
2. —COOH group represents
A. Carboxylic acid
B. Alcohol
C. Ketone
D. Aldehyde
3. In homologous series, successive members differ by
A. —CH₃
B. —CH₂
C. —OH
D. —COOH
4. Propane has how many carbon atoms?
A. 1
B. 2
C. 3
D. 4
5. Ethene has the formula
A. C₂H₆
B. C₂H₄
C. C₂H₂
D. CH₄
6. Ethyne has the formula
A. C₂H₆
B. C₂H₄
C. C₂H₂
D. CH₄
7. Combustion of carbon gives
A. CO
B. CO₂
C. CH₄
D. C₂H₆
8. Yellow sooty flame is observed in
A. Saturated compounds
B. Unsaturated compounds
C. Pure metals
D. Ionic compounds
9. Alcohol reacts with sodium to give
A. Oxygen
B. Hydrogen
C. Carbon dioxide
D. Nitrogen
10. Glacial acetic acid is
A. Ethanol
B. Methanol
C. Ethanoic acid
D. Propanoic acid
11. Esters are formed by reaction between
A. Acid + Base
B. Acid + Alcohol
C. Base + Salt
D. Alcohol + Metal
12. Saponification is reaction of ester with
A. Acid
B. Alkali
C. Water
D. Metal
13. Soaps are
A. Sodium or potassium salts of carboxylic acids
B. Alcohols
C. Ketones
D. Aldehydes
14. In soap molecules, hydrophobic end is
A. Ionic end
B. Hydrocarbon tail
C. Water-loving part
D. None
15. Detergents remain effective in hard water because
A. They form scum
B. They do not form insoluble precipitates
C. They contain sodium chloride
D. They lose cleansing property
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