Chemistry - Mock Test 59

Question 581

The formula of Plaster of Paris is?

A) CaSO4, 2H2O B) CaSO4 C) 2CaSO4, H2O D) 2CaSO4, 4H2O

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Question 582

Polythene is industrially prepared by the polymerisation of?

A) styrene B) methane C) acetylene D) ethylene

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Question 583

The metallic constituents of hard water are?

A) Magnesium, Calcium and tin B) Calcium, magnesium and iron C) Magnesium, tin and iron D) Iron, tin and calcium

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Question 584

The oxide of Nitrogen used in medicine as anaesthetic is?

A) Nitric oxide B) Nitrogen dioxide C) Nitrous oxide D) Nitrogen pentoxide

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Question 585

Which of the following is commonly called a polyamide ?

A) Nylon B) Terylene C) Rayon D) Orion

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Question 586

In an atomic nucleus, neutrons and protons are held together by?

A) Exchange forces B) Gravitational forces C) Coulombic forces D) Magnetic forces

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Question 587

Which one of the following is used in preparing match sticks?

A) Chile saltpeter B) Indian salpetre C) Red phosphorus D) Sodium bicarbonate

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Question 588

Which one of the following is present in the emission from “unleaded petrol”?

A) carbon monoxide B) carbon dioxide C) ethylene D) hydrocarbons

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Question 589

Which one of the following is a major constituent of Biogas ?

A) Carbon dioxide B) methane C) hydrogen D) nitrogen dioxide

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Question 590

Which one of the following materials is suitable for water purification?

A) Silicones B) Zeolites C) Asbestos D) Quartz

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