Elements, Compounds and Mixtures - 1
Test your knowledge of elements, compounds, and mixtures including their properties, classification, and characteristics.
Questions
Which of the following occurs in a free state?
- Krypton
- Germanium
- Hydrogen
- Lead
Which of the following does not have lustre?
- Potassium
- Lead
- Phosphorus
- Copper
Which of the following is not a characteristic of a pure substance?
- It should be essentially homogeneous.
- It should have the same composition.
- It should consist of only elements.
- It should have the same properties.
Which of the following elements is malleable and ductile?
- Potassium
- Sulphur
- Antimony
- Neon
Which of the following is a metalloid?
- Silver
- Mercury
- Bismuth
- Beryllium
Which of the following metals is non-malleable and non-ductile?
- Zinc
- Copper
- Sodium
- Potassium
Which of the following is a poor conductor of electricity?
- Graphite
- Copper wire
- Tungsten wire
- Iron rod
Which of the following exists in monoatomic state?
- Phosphorous
- Chlorine
- Nitrogen
- Neon
Which of the following is a molecule of an element?
- Hydrogen chloride
- Acetic acid
- Ozone
- Water
Which of the following elements is lustrous?
- Fluorine
- Chlorine
- Iodine
- Bromine
Which of the following is not a mixture?
- Acetic acid
- Milk
- Petrol
- Amalgam
Which of the following is a characteristic of compounds?
- Compounds vary in composition and properties.
- Elements in a compound vary in composition.
- Properties of a compound differ from those of its constituent elements.
- Separation of a compound into its elements is not possible chemically.
Which of the following is a homogeneous mixture?
- Petrol in diesel
- Oil in water
- Iron and sulphur
- Sand in water
Which of the following forms a homogenous mixture?
- Alcohol in water
- Oil in water
- Carbon disulphide in water
- Petrol in water
Which of the following is not a property of any individual constituent of sugar?
- Black insoluble solid
- Invisible and odourless
- Crystalline solid
- Gaseous in nature
Which of the following is a heterogeneous mixture?
- Copper + zinc
- Iodine in alcohol
- Sugar in water
- Charcoal and sulphur
Which type of mixture is formed by iodine in alcohol?
- Homogeneous and liquid-liquid mixture
- Homogeneous and solid-liquid mixture
- Heterogeneous and liquid-liquid mixture
- Heterogeneous and solid-liquid mixture
What type of mixture is formed by copper and zinc?
- Heterogeneous and solid-solid mixture
- Homogenous and solid-non solid mixture
- Homogenous and solid-solid mixture
- Heterogeneous and solid-non solid mixture
Which of the following statements is incorrect for an element?
- It cannot be converted into anything simpler.
- Each element consists of only one kind of atom.
- It exists as an individual atom or a molecule.
- Different elements are composed of the same atoms.
- Different elements are composed of the different atoms.
Which of the following is chemically inert?
- Gold
- Carbon
- Beryllium
- Helium
- potassium