Chemistry Quiz for Grade 8
- Question of
_______ is known as artificial silk.
- Rayon
- Nylon
- Polyester
- None of them
- Question of
Which of the following is made from wood pulp?
- Rayon
- Nylon
- Polyester
- None of them
- Question of
Which of the following is used to obtain nylon?
- All of the above
- Air
- Coal
- Water
- Question of
Which of the following is caused by plastic burning?
- Air pollution
- Water pollution
- Sound pollution
- All of them
- Question of
Choose a biodegradable substance.
- None of them
- Thermoplastic
- Thermosetting plastic
- PVC pipes
- Question of
Why do we use plastic containers for storing food?
- All of them
- They are strong
- They are durable
- They are light in weight
- Question of
Which of the following acids is formed when sulphur dioxide is dissolved in water?
- Sulphurous acid
- Sulphuric acid
- Thiosulphurous acid
- None of them
- Question of
What kind of sound does hydrogen gas make when a lit candle is placed close to the mouth of the test tube where it is evolved?
- Pop
- Tinkling
- Bell tone
- None of them
- Question of
Which of the following is a non-metal that can be stored in the water?
- Phosphorous
- Sodium
- Potassium
- Calcium
- Question of
Which of the following causes blue litmus paper to turn red?
- Vinegar
- Lubricating grease
- Baking Soda
- Soap
- Question of
Which gas results from the reaction of metals and sodium hydroxide?
- Hydrogen gas
- Oxygen gas
- Carbon dioxide gas
- None of them
- Question of
Metals are typically solid by nature. At room temperature, which of the following metals is in a liquid state?
- Hg
- Br
- Na
- I
- Question of
What is the primary source of minerals in the soil?
- Parent rock
- Plants
- Animals
- All of them
- Question of
Which of the following is not a petroleum product?
- Beeswax
- Kerosene
- Pitch black
- None of them
- Question of
Which of the following is the purest form of carbon?
- Coke
- Coal gas
- Coal tar
- None of them
- Question of
Which of the following are vital constituents of petroleum?
- All of them
- Liquified petroleum gas
- Jet fuel
- Butane
- Question of
Petroleum is a _______ solution.
- Liquid-liquid
- Liquid-gas
- Gas-gas
- All of them
- Question of
Which of the following is the characteristic of exhaustible natural resources?
- They are limited
- They are unlimited
- They are not dependent on nature
- They are dependent on nature
- Question of
Which of the following is a chemical reaction that produces heat when a substance reacts with oxygen?
- Combustion
- Oxidation
- Reduction
- Hydrolysis
- Question of
Ignition temperature is the ________ temperature at which the substance catches fire.
- Lowest
- Highest
- Maximum
- Room
- Question of
Which of the following is not an inflammable substance?
- Wood
- Alcohol
- Ethanol
- Liquified Petroleum Gas
- Question of
Which of the following is the best fire extinguisher for electrical equipment and inflammable substances?
- CO2
- Water
- O2
- All of them
- Question of
Which of the following describes a type of combustion in which a substance suddenly bursts into flame without any apparent cause?
- Spontaneous
- Rapid
- Explosion
- None of them
- Question of
Which of the following is not an ideal fuel characteristic?
- Costly
- Readily available
- Easy to transport
- High calorific value
- Question of
Incomplete combustion of fuels releases ____ gas.
- CO
- NO2
- CO2
- SO2
- Question of
Which of the following fuels causes minimum air pollution?
- Hydrogen
- Kerosene oil
- Petrol
- Coal
- Question of
Global warming causes:
- Increase in temperature of earth
- Decrease in temperature of the earth
- No change in temperature
- Change in pressure of earth
- Question of
Which of the following methods of water purification will not kill microorganisms?
- Filtration
- Distillation
- Boiling
- Chlorination
- Question of
Which of the following is/are greenhouse gas?
- All of them
- Carbon dioxide
- Methane
- Nitrous oxide
- Question of
Water that is fit for drinking purposes is known as ____.
- Potable water
- Sewage water
- Seawater
- Portable water