1 The branch of chemistry that deals with the study of radioactive substances is: A Polymer chemistry B Nuclear chemistry C Geochemistry D Biochemistry
2 Which of the following is an example of a suspension? A Sugar solution B Milk C Muddy water D Vinegar
3 The solubility of most solids in water ______ with an increase in temperature. A decreases B increases C remains the same D becomes zero
5 The change of state from gas directly to solid is called: A Melting B Freezing C Deposition D Sublimation
6 Which method is used to separate a mixture of sand and water? A Filtration B Distillation C Sublimation D Chromatography
7 Which branch of chemistry deals with the study of the composition and structure of substances? A Physical chemistry B Analytical chemistry C Organic chemistry D Biochemistry
8 A solution that contains the maximum amount of solute that can dissolve at a given temperature is called: A Unsaturated solution B Saturated solution C Supersaturated solution D Dilute solution
9 The process of a solid directly changing into a gas without passing through the liquid state is called: A Sublimation B Deposition C Evaporation D Condensation
10 How does the solubility of most gases in water change with an increase in temperature? A It increases B It decreases C It remains the same D It first increases then decreases
11 The state of matter that consists of ionized gas and is found in stars is called: A Solid B Liquid C Plasma D Bose-Einstein condensate
12 Which method is used to separate a mixture of two liquids with different boiling points? A Filtration B Distillation C Sublimation D Chromatography
13 The change of state from liquid to gas is called: A Melting B Freezing C Evaporation D Condensation
15 Which of the following is NOT a branch of chemistry? A Biochemistry B Geochemistry C Astronomy D Polymer chemistry
16 Which separation technique is used to separate a mixture of salt and water? A Filtration B Distillation C Evaporation D Chromatography
17 The solubility of most solids in water increases with: A Increase in temperature B Decrease in temperature C Increase in pressure D Decrease in pressure
18 A mixture in which the particles are large enough to be seen with the naked eye and settle down on standing is called: A Solution B Colloid C Suspension D Alloy
19 On heating a saturated solution, what happens to the solubility of most solid solutes? A It decreases B It increases C It remains the same D It becomes zero
20 What is the effect of increasing temperature on the solubility of a gas in a liquid? A Solubility increases B Solubility decreases C Solubility remains the same D Solubility first increases then decreases
21 The solubility of most gases in water ________ with an increase in temperature. A increases B decreases C remains constant D becomes zero
22 Which effect is shown by colloidal particles when a beam of light passes through them? A Tyndall effect B Brownian effect C Doppler effect D Photoelectric effect
23 Which allotrope of carbon is a good conductor of electricity? A Diamond B Graphite C Fullerene D Charcoal
24 At saturation point, the rate of dissolution of solute equals the rate of: A Evaporation B Crystallization C Condensation D Sublimation
25 Which state of matter consists of ionized gas with free electrons? A Solid B Liquid C Gas D Plasma