(A) Iron
(B) Arsenic
(C) Lead
(D) Mercury
Which material used in the manufacturing of lead pencil?
(A) Carbon
(B) Mica
(C) Lead
(D) Graphite
What is the purest form of water?
(A) Ground water
(B) Rain water
(C) Tap water
(D) Distilled water
Zinc sulphide commonly used as?
(A) Deodorant
(B) Rodenticide
(C) Fungicide
(D) Herbicide
Number of moles of solute present in 1kg solvent is called?
(A) Normality
(B) Molarity
(C) Molality
(D) None of the above
Nuclear energy is a mineral based energy source. It is derived from?
(A) Plutonium
(B) Uranium
(C) Thorium
(D) All of the above
Major pollutants of cigarette smoke?
(A) Dioxin and Benzene
(B) Carbon Monoxide and Dioxine
(C) Carbon Monoxide and Nicotine
(D) Carbon Monoxide and Benzene
Amount of chlorine available in water after disinfection is called?
(A) Free available chlorine
(B) Residual chlorine
(C) Combined available chlorine
(D) Free chlorine