1) The purity of a substance can be estimated by... a) Boiling point only b) Melting point only c) Melting point and boiling point d) Sublimation 2) Substances which transform from solid into gas directly are called.... a) Sublimate b) Amphoteric c) Neutral oxides d) Acidic oxides 3) The boiling point of water is ... a) 0°C b) 100°C c) 78°C d) -14°C 4) A methylated spirit is a form of... a) A liquid b) Aqueous c) Gas d) Acid 5) Presence of impurities cause... a) A rise in boiling point b) A drop in melting point c) A rise in melting point d) A rise in boiling point and a drop in melting point 6) A liquid can flow because the.........each other. a) Particles are far apart b) Particles are free to move around c) Liquid d) Move in random direction 7) The particles in liquid are not arranged in a pattern they....... a) Vibrate b) Particles c) Move in random direction d) Particles are free to move around 8) In a .....the particles are close together and move in random direction a) Move in random direction b) Regular pattern c) Liquid d) Fixed position 9) A solid can not be compressed because there are.... a) Fixed position b) Particles are close together c) Particles are far apart d) No space between the particles 10) The particles are.....so a solid cannot be compressed a) Close together b) Move in random direction c) Particles are far apart d) Particles are free to move around

Particulate nature of matter-Classify the state of matter

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