Chemistry Heavy metal pollution of water is caused by: Wood burning Acid Plants Paints Domestic sewage Wood burning Acid Plants Paints Domestic sewage ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ferrous sulphate is used in water treatment as a/an Adsorbent Coagulant aid Oxidizing agent Reducing agent Adsorbent Coagulant aid Oxidizing agent Reducing agent ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is a Bakelite ? Base Polymer Solution Acid Base Polymer Solution Acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Suspension particles have the size between 10–2 – 10–4 cm 10–8 – 10–10cm 10–5 – 10–7cm 10–1 – 10–2 cm 10–2 – 10–4 cm 10–8 – 10–10cm 10–5 – 10–7cm 10–1 – 10–2 cm ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used in welding broken pieces of iron rails and machine parts? Solder Aluminium sulphate None of these Aluminium powder Solder Aluminium sulphate None of these Aluminium powder ANSWER DOWNLOAD EXAMIANS APP
Chemistry Conduction band electrons have more mobility than holes because they Experience collision less frequently Are lighter Need less energy to move them Have negative charge Experience collision less frequently Are lighter Need less energy to move them Have negative charge ANSWER DOWNLOAD EXAMIANS APP
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