- (A) Reduction in working efficiency of manpower
- (B) Fatigue
- (C) High breathing rate
- (D) All
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- (A) Food industry
- (B) Municipal sewage treatment
- (C) Petroleum refinery
- (D) Iron & steel plant
- (A) Blood poisoning
- (B) Anaemia
- (C) Nervous system disorder
- (D) All
- (A) Aluminium sulphate
- (B) Ferrous sulphate
- (C) Hydrated lime
- (D) Chloramine
- (A) Carbonates
- (B) Bi-carbonates
- (C) Iron & manganese
- (D) Arsenic
- (A) 1
- (B) 4
- (C) 8
- (D) 12
- (A) Suspended inorganic matter
- (B) Dissolved solids
- (C) Floating solids
- (D) Dissolved gases
- (A) Dust & mists
- (B) Smoke & fumes
- (C) Photochemical smog & soot
- (D) None of these
- (A) Idle running
- (B) Acceleration
- (C) Cruising
- (D) Deceleration
- (A) Respiratory disease (e.g. asthma)
- (B) Asphyxiation (suffocation) leading to death
- (C) Retardation in crop growth
- (D) Damage to building materials like marble
