Chemistry set 29

Q.1 An alcohol is converted to an aldehyde with same number of carbon atoms as that of alcohol in
the presence of K2Cr2O7/H2SO4 the alcohol is:
A) CH3Cl(CH)2OH C) (CH3)3COH
B) CH3CH2CH2OH D) (CH3)3CHOH

Q.3 Which enzyme is involved in the fermentation of glucose:
A) Zymase C) Urease
B) Invertase D) Diastase
Q.4 Relative acidic strength of alcohol, phenol, water and carboxylic acid is:
A) Carboxylic acid > Alcohol > Phenol > Water C) Phenol > Carboxylic acid > Alcohol > Water
B) Carboxylic acid > Phenol > Water > Alcohol D) Water > Alcohol > Phenol > Carboxylic acid

Q.9 Consider the following reaction:
C2H5OH + PCl5 ?
What product(s) may be formed?
A) C2H5Cl only C) C2H5Cl, POCl3 and HCl
B) C2H5Cl and HCl D) C2H5Cl and POCl3
Q.10 is named as:
A) Picric acid C) Benzoic acid
B) Nitro phenol D) Malonic acid

Q.12 The relative strength of carboxylic acid, water, ethanol and phenol has the following order of
increasing acid strength:
A) Carboxylic Acid > Phenol > Ethanol > Water C) Phenol > Carboxylic Acid > Ethanol > Water
B) Carboxylic Acid > Phenol > Water > Ethanol D) Water > Ethanol > Phenol > Carboxylic Acid