The process of fermentation of starch involve many enzymes the sequence of enzymes used are____________________?

A. Diastase-maltase-zymase
B. Zymase-maltase-diastase
C. Maltase-diastase-zymase
D. Diastase-zymase-maltase

K2Cr2O7/H2SO4 generate____________________?

A. Oxygen
B. Hydrogen
C. Nascent oxygen[o]
D. Nascent hydrogen[h]

Which alcohol will undergo elimination reaction to give alkene in the presence of acidic potassium dichromate ?

A. Primary alcohol
B. Secondary alcohol
C. Tertiary alcohol
D. All of above

When two moles of ethyl chloride react with two moles of sodium in the presence of ether what will be formed ?

A. 2 moles of ethane
B. 1 mole of ethane
C. 2 moles of butane
D. 1 mole of butane

When CO2 is made to react with ethyl magnesium iodide followed by acid hydrolysis the product formed is _________________?

A. Propane
B. Propanoic acid
C. Propanal
D. Propanol

SN2 reaction can be best carried out with__________________?

A. Primary alkyl halide
B. Secondary alkyl halide
C. Tertiary alkyl halide
D. All

For which mechanisms the first step involved is the same ?

A. E1 + e2
B. E2 + sn2
C. E1 and sn1
D. Sn1 and sn2

Alkyl halides are considered to be very reactive compounds towards nucleophile because_________________?

A. They have an electrophilic carbon
B. They have an electrophilic carbon & a good leaving group
C. They have an electrophilic carbon & a bad leaving group
D. They have a nucleophilic carbon & a good leaving group

Which one of the following reactants will be required to form straight chain alcohol by using Grignard reagent________________?

A. Formaldehyde
B. Ketone
C. Ethylene epoxide
D. Both a & c

Ethylene epoxide treated with Grignards reagent followed by acid hydrolysis yield __________________?

A. Primary alcohol
B. Secondary alcohol
C. Tertiary alcohol
D. Dihydric alcohol