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Online General Science Quiz Set No - 18

General Science questions have been taken from previous years question papers of different competitive examinations such SSC CGL, SSC CHSL, CDS, NDA, Bank, State PSC, Railways, MAT, CAT, etc.

171) One micron is equal to:
A) 1/10th of mm
B) 1/100th of mm
C) 1/1000th of mm
D) 1/10000th of mm

172) Optical fibres are mainly used in:
A) Communication
B) Weaving
C) Musical Instruments
D) Food Industry

173) Oxygen is manufactured by the fractional evaporation of:
A) Water
B) Liquid air
C) Hydrogen peroxide
D) Liquid oxygen

174) Paper is manufactured from:
A) Wood and resin
B) Wood, Sodium and Bleaching powder
C) Wood and bleaching powder
D) Wood, Calcium, hydrogen sulphate and resin

175) Parmanent hardness of water may be removed by the addition of:
A) Alum
B) Sodium Carbonate
C) Lime
D) Potassium Permanganate

176) Parsec is a measure of:
A) Orbital velocity of giant stars
B) Brightness of heavenly body
C) Astronomical distance
D) Density of stars

177) Particles emitted from a radioactive nuclei are
A) hydrogen nuclei
B) helium nuclei
C) fast moving neutrons
D) fast moving electrons

178) People with Down's syndrome invariably affected by
A) Huntington's disease
B) Alzheimer's disease
C) Meningitis
D) Brain haemorrhage

179) Permanent hardness of water can be removed by adding:
A) Potassium Permanganate
B) Chlorine
C) Bleaching Powder
D) Washing Soda

180) Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of:
A) Nitrates
B) Zeolites
C) Sulphonates
D) None of these