The combustion reaction, C + O2 = CO2, is__________________?
A. Exothermic
B. Endothermic
C. Autocatalytic
D. None of these
Chemical Process
BHC (Benzene hexachloride) is made by the chlorination of benzene_____________________?
BHC (Benzene hexachloride) is made by the chlorination of benzene_____________________?
A. Which is an addition reaction
B. Which is a substitution reaction
C. In absolute dark
D. In presence of sunlight
Plasticisers are added to paints to______________________?
Plasticisers are added to paints to______________________?
A. Make it corrosion resistant
B. Make glossy surface
C. Give elasticity & prevent cracking of the film
D. Increase atmospheric oxidation
Starting raw material for the manufacture of alum is_________________?
Starting raw material for the manufacture of alum is_________________?
A. Alumina
B. Gypsum
C. Bauxite
D. Ammonium bicarbonate
In the manufacture of viscose rayon, the raw material used industrially is ____________________?
In the manufacture of viscose rayon, the raw material used industrially is ____________________?
A. Eucalyptus wood
B. Bamboo
C. Bagasse
D. Fine teak wood
Rotary kiln is not involved in the production of___________________?
Rotary kiln is not involved in the production of___________________?
A. Cement
B. Lime from limestone
C. Slaked lime from quick lime
D. None of these
______________ is an ore concentrating metallurgical process involving a chemical change?
______________ is an ore concentrating metallurgical process involving a chemical change?
A. Electromagnetic separation
B. Froth floatation
C. Roasting
D. None of these
Solvent used for extraction of oil is_____________________?
Solvent used for extraction of oil is_____________________?
A. Hexane
B. Methyl ethyl ketone
C. Furfural
D. None of these
Concentration of NaOH solution produced by mercury electrolytic cell is about _______________ percent?
Concentration of NaOH solution produced by mercury electrolytic cell is about _______________ percent?
A. 10
B. 25
C. 50
D. 98
Bordeaux mixture is a/an________________?
Bordeaux mixture is a/an________________?
A. Fertiliser
B. Inorganic fungicide
C. Insecticide
D. Explosive