- (A) Transition elements
- (B) Inert gases
- (C) Alkaline earth metals
- (D) Alkali metals
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Which substance is known as oil of vitriol?
- (A) Hydrochloric Acid
- (B) Nitric Acid
- (C) Sulphuric Acid
- (D) Hexane
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Hypochlorous acid HClO is unstable and readily liberates:
- (A) CIO
- (B) Atomic Oxygen
- (C) Atomic Chlorine
- (D) Atomic Hydrogen
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Space rockets use fuel which is liquid oxygen mixed with liquid?
- (A) Nitrogen
- (B) Chlorine
- (C) Hydrogen
- (D) Helium
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Which method is used for the purification of bauxite containing excess of silica SiO2 as an impurity?
- (A) Hoope’s Method
- (B) Serpek’s Method
- (C) Baeyer’s Method
- (D) Hall’s Method
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Aluminium bronze is an alloy which has composition of?
- (A) 20% Al and 80% Cu
- (B) 30% Al and 70% Cu
- (C) 50% Al and 50% Cu
- (D) 10% Al and 90% Cu
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Which isotope of hydrogen is radioactive?
- (A) Protium
- (B) Deuterium
- (C) Tritium
- (D) Ozone
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Coal gas mainly consists of?
- (A) Ethane and Hydrogen
- (B) Hydrogen and Oxygen
- (C) Methane and Butane
- (D) Methane and Hydrogen
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which of the following gas explodes on compression to a liquid?
- (A) Methane
- (B) Hydrogen
- (C) Ethyne
- (D) Ethane