Fusel oil is a/an_________________?
(A) Essential oil
(B) Extract from medicinal herbs
(C) Mixture of higher molecular weight alcohols (a by-product obtained during production of alcohol from molasses)
(D) None of these
Titanium dioxide is a/an ___________________ colour pigment?
(A) White
(B) Black
(C) Yellow
(D) Blue
Type of glass used in optical work is the ___________________ glass?
(A) Soda-lime
(B) Fibre
(C) Lead
(D) Borosilicate
The most stable allotropic form of phosphorous is the _________________ phosphorous?
(A) White
(B) Black
(C) Yellow
(D) Red
Commercial production of calcium carbide requires limestone and __________________ as raw materials?
(A) Coke
(B) Sand
(C) Soda ash
(D) Fuel oil
Esterification reaction___________________?
(A) Produces soap
(B) Is reversible
(C) Is a reaction between an alcohol and an organic acid
(D) All A,
The most economical pulp for the production of newsprint would be the _____________________ pulp?
(A) Ground-wood
(B) Sulphate
(C) Sulphite
(D) Semi-chemical
Very fine suspended and colloidal impurities are removed from water by a process called___________________?
(A) Sedimentation
(B) Coagulation
(C) Disinfection
(D) Softening
Styrene-butadiene-rubber (SBR) as compared to natural rubber has________________?
(A) Poorer tensile strength
(B) Poorer resistance to oxidation
(C) Greater amount of heat build-up under heavy loading
(D) All A ,