Sucrose is a disaccharide consisting of____________________?
(A) Glucose and glucose
(B) Glucose and fructose
(C) Glucose and galactose
(D) Fructose and galactose
All enzymes are made of______________________?
(A) Fats
(B) Carbohydrates
(C) Proteins
(D) Amino acids
Essential oils are usually obtained using__________________?
(A) Steam distillation
(B) Extractive distillation
(C) Solvent extraction
(D) Leaching
Which of the following is an organometallic compound ?
(A) Isopropyl alcohol
(B) Tetra-ethyl lead
(C) Zeolite
(D) Cumene
Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of_________________?
(A) Collagen
(B) Tannin
(C) Molasses
(D) Carbohydrate
_________________ is not a constituent of gun powder?
(A) Carbon
(B) Charcoal
(C) Sulphur
(D) Potassium nitrate
Which of the following is not an abrasive material ?
(A) Bakelite
(B) Pumice
(C) Corundum
(D) Carborundum
Black liquor is converted into white liquor by __________________________?
(A) Evaporation and burning the concentrate followed by causticisation of products
(B) Multi-effect evaporation only
(C) Selective liquid extraction
(D) Extractive distillation
Roasting of metallurgical ores is done mainly to ___________________?
(A) Dehydrate it
(B) Sinter the ore
(C) Remove CO2 & H2O
(D) Remove arsenic & sulphur
Thermosetting materials ______________________?
(A) Are cross-linked molecules
(B) Soften on application of heat
(C) Are solvent soluble
(D) None of these