Category: Chemical Environmental Engineering

A. Respiratory disease (e.g. asthma)
B. Asphyxiation (suffocation) leading to death
C. Retardation in crop growth
D. Damage to building materials like marble

A. Coal mining
B. Limestone mining
C. Textile
D. Asbestos

A. Blood poisoning
B. Anaemia
C. Nervous system disorder
D. All A., B. and C.

A. Dermatitis (skin disorder)
B. Cancer
C. Asphyxiation
D. Asthma

A. 100
B. 1000
C. 400
D. 4000

A. Fading of dyes on textiles
B. Corrosion, tarnishing & soiling of metals
C. Reduced strength of textiles
D. All A., B. and C.

A. Tintometer
B. Colorimeter
C. Electro-chemical cell
D. Turbidimeter

A. Air
B. Water
C. Noise
D. Radioactive

A. Sedimentation
B. Skimming off
C. Chlorination
D. Biological oxidation

A. Nitric acid making
B. Nitrogenous fertiliser
C. Detergent
D. Any of these