The main gas present in L.P.G
Pentane
Butane
Hexane
Octane
The chemical used to bind the dye to the fabric
Cotton
Mordant
Rayon
Glue
A metallic apparatus which supports the wire gauze is
Retort stand
Test tube stand
Clamp
Tripod stand
The burning sensation of chilly pepper is due to the presence of chemical
Cytosine
Uracil
Capaicin
Thiamine
Which of the following connects the barrel of the Bunsen burner to the source of gas?
Wire gauze
Rubber tubing
Barrel
Base stand
Chemical substance which prevent the growth of micro-organisms or kill them but are not harmful to the living human tissues are called
Antiseptics
Analgetics
Pesticides
Disinfectant
The cigarette lighter was invented by
Dobereiner
Robert Wilhelm Bunsen
Michel Faraday
Lavoiser
Non luminous flame occurs when air-hole is
Completely closed
Completely Open
Partially closed
None of these
CAN is a/an
Nitrogenous fertilizer
Phosphate fertilizer
Potash fertilizer
Npk fertilizer
Luminous flame occurs when the air-hole is
Open
