Hamad Materials and Construction 07/09/2021 A. Hydrochloric acid B. SO2 (dry or wet) C. Chlorine (dry or wet) D. All A., B. and C. Related Mcqs: ‘Age hardening’ of duralumin is due to____________________?A. Copper B. Magnesium C. Both A. & B. D. Neither A. nor B.... The high expansion metal normally used in the bimetallic thermometer is _______________ temperature measurement?A. Brass for low B. Nickel alloys for high C. Both A. & B. D. Aluminium for all... Lead pipes are not safe for carrying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)2. Lead pipes are readily corroded by___________________?A. Dilute HCl B. Acetic acid C. Concentrated H2SO4 D. None of these... Amount of energy that a material can absorb before its fracture is a measure of its _________________?A. Toughness B. Resilience C. Malleability D. Ductility... Which of the following is produced by condensation polymerisation ?A. Bakelite B. Polythene C. Poly vinyl chloride D. Polystyrene...
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