Chemistry - Mock Test 68

Question 671

Polymer used in bullet proof glass is ?

A) Lexane B) Nomax C) pmma D) Kevlar

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Question 672

Parlon is ?

A) Rubber B) Terelene C) Nylon - 6 D) Oxlon

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Question 673

The molecular weight of cellulose varies between ?

A) 1000 to 20000 B) 100 to 200 C) 20000 to 500000 D) 100000 to 2000000

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Question 674

A nuclear reaction must be balanced in terms of ?

A) Energy B) Mass C) Mass and Energy D) None of these

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Question 675

Nucleons are ?

A) Protons and electrons B) Electrons and Neutrons C) Protons and Neutrons D) Electrons, Protons and Neutrons

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Question 676

Positron has nearly the same weight as that of ?

A) Alpha-Paralite B) Neutron C) Proton D) Electron

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Question 677

An electrically charged atom or a group of atoms is known as ?

A) Meson B) Ion C) Proton D) Cyclotron

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Question 678

Nuclear energy is based on the conversion of ?

A) Protons into Neutrons B) Neutrons into Protons C) Mass into Energy D) Uranium into Radium

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Question 679

Pure water can be obtained from sea water by ?

A) Centric fugation B) Reverse osmosis C) Plasmolysis D) Sedimentation

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Question 680

Hydrogen does not combine with ?

A) Antimony B) Bismuth C) Sodium D) Helium

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