Which of the following connects the barrel of the Bunsen burner to the source of gas?
Wire gauze
Rubber tubing
Barrel
Base stand
An apparatus used for holding several test tubes is
Test tube holder
Spatula
Test tube stand
Tripod stand
A metallic apparatus which supports the wire gauze is
Retort stand
Clamp
The main gas present in L.P.G
Pentane
Butane
Hexane
Octane
CAN is a/an
Nitrogenous fertilizer
Phosphate fertilizer
Potash fertilizer
Npk fertilizer
The acid present in ant is
Acetic acid
Formic acid
Malicacid
Latic acid
The cigarette lighter was invented by
Dobereiner
Robert Wilhelm Bunsen
Michel Faraday
Lavoiser
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
Non luminous flame occurs when air-hole is
Completely closed
Completely Open
Partially closed
None of these
The alloy used to make aircraft
Nichrome
Duralumin
Steel
Bronze
