Q.1:- Chlorine is mixed in water so that ?
- Bacteria are killed
- Dirt is removed
- Water is cleaned
- Suspension is removed
Q.2:- A colourless gas with smell of rotten egg is ?
- None of the above
Q.3:- Freon is used as ?
- Both (B) and (C)
Q.4:- The Hydrogen Halide with the highest boiling point is ?
Q.5:- Acid rain is due to ? [EPFO Exam 2016]
- Sulphur dioxide pollution
- Carbon monoxide pollution
- Pesticide pollution
- Dust particles in the atmosphere
Q.6:- Which of the following does not have bleaching action ?
- Cl2 (cmoist)
Q.7:- Which one of the following is produced during the formation of photochemical smog ? [IAS Exam 2003]
- Nitrogen Oxide
Q.8:- Radon is a ?
- Noble Gas
- Trade name of Nylon
Q.9:- Which one of the following is used for writing on glass ? [CDS Exam 2006]
- Hydrogen Iodide
- Hydrogen Fluoride
Q.10:- Which one of the following is associated with the formation of brown air in traffic congested cities ? [NDA Exam 2009]
- Sulphur Dioxide
- Nitrogen Oxide
- Carbon Dioxide
- Carbon Monoxide
Q.11:- Which of the following alloy is used for making magnets for hearing aids ?
- German Silver
- Monel Metal
Q.12:- Molecule in which the distance between two adjacent Carbon atoms is longest in ?
Q.13:- A mixture of Camphor and Benzoic Acid can be easily separated by ?
- Fractional Distillation
- Chemical Method
- Extraction with solvents
Q.14:- Which of the following is a chiral carbon ?
Q.15:- An isomer of Ethanol is ?
- Diethyl Ether
- Dimethyl Ether
Q.16:- Lassaigne’s test is used for the detection of ?
- Carbon only
- Hydrogen only
- Oxygen only
- Nitrogen, Sulphur and Halogens
Q.17:- The name fire damp is given to ?
Q.18:- Carbon black is obtained when Methane is ?
- Heated in absence of air
- Heated in presence of Nitrogen
- Heated in presence of Ammonia
- Heated with steam
Q.19:- Petroleum is a mixture of ?
- Aromatic Hydrocarbons
- All of these
Q.20:- Lindlar’s catalyst is ?
- Pt in Ethanol
- Pd + BaSO4
- Ni in Ethanol
- Na in liquid NH3
Q.21:- Baeyer’s reagent is ?
- Alkaline KMnO4 Solution
- Acidic KMnO4 Solution
- Neutral KMnO4 Solution
- Aqueous Bromine Solution
Q.22:- Liquid Hydrocarbon is converted into a mixture of gaseous hydrocarbon by ?
Q.23:- Most of Hydrocarbons from petroleum are obtained by ?
- Fractional distillation
- Fractional crystallization
Q.24:- Formaline is the commercial name of ?
- Formic acid
- 40% Aqueous Solution of Methanal
Q.25:- Which of the following is used as a Hypnotic ?