Question : Which of the following gases is responsible for discolouration of brass in air?
A. hydrogen sulphide
B. water vapour
C. carbon dioxide
D. nitrogen oxide
Question Listed : Hydrogen Sulphide, Metals,
Question : Which of the gas is not known as green house gas?
A. Hydrogen
B. Carbon dioxide
C. Nitrous oxide
D. Methane
Question Listed : Hydrogen, Elements, Metals,
Question : The element common to all acids is
A. oxygen
B. sulphur
C. carbon
D. hydrogen
Question Listed : Hydrogen, Elements, Metals,
Question : Paper is manufactured by
A. Wood and bleaching powder
B. Wood, calcium, hydrogen sulphite and resin
C. Wood, sodium and bleaching powder
D. Wood and resin
Question Listed : Wood, Calcium, Hydrogen Sulphite, Resin, Synthetic Material,
Question : Brass gets discoloured in air because of the presence of which of the following gases in air?
A. Nitrogen
B. Carbon dioxide
C. Hydrogen sulphide
D. Oxygen
Question Listed : Hydrogen Sulphide, Elements, Metals,
Question : Which of the following is the lightest gas?
A. radon
B. xenon
C. helium
D. hydrogen
Question Listed : Gas, Hydrogen,
Question : The gas used for filling weather balloons is
A. Nitrogen
B. Air
C. Hydrogen
D. Helium
Question Listed : Gas, Hydrogen,
Question : Gases used to prepare Ammonia gas are
A. Nitrogen and Carbon
B. Nitrogen and Hydrogen
C. Nitrogen and Oxide
D. Nitrogen and Oxygen
Question Listed : Nitrogen, Hydrogen, Gas,
Question : The gas used in the manufacture of vanaspati from vegetable oil is
A. nitrogen
B. nitrogen
C. oxygen
D. hydrogen
Question Listed : Hydrogen, Chemistry,