alleryStart learning →Which liquid is by far the most common solvent?
- Petrol
- Milk
- Oil
- Water
Show answer and solution
Correct answer: D. Water
Water dissolves a very large number of substances, making it the most common solvent.
Olympiad (Class 5) Matter — practice questions — page 2
Explore 45 free Matter questions in Olympiad (Class 5) Science. Open each question or exercise to read its content, reference answers and available explanation.
Practise Matter with Quill →Matter questions and exercises with answers
Showing questions 31–45 of 45.
Which liquid is by far the most common solvent?Read the answer and worked solution →In air, which gas is the main one in which the others are dissolved?Read the answer and worked solution →Two different gases are kept together in a closed jar. What happens?Read the answer and worked solution →Spoonfuls are taken from top and bottom of a stirred sugar solution. What do you find?Read the answer and worked solution →A salt solution is left undisturbed for a month. What happens to the salt?Read the answer and worked solution →What is the ability of a substance to form a solution with another substance called?Read the answer and worked solution →Sand does not dissolve in water. What word describes sand in water?Read the answer and worked solution →A solution holds more solute than its usual limit. What is it called?Read the answer and worked solution →A puddle dries up in the sun. In which state does the water leave the ground?Read the answer and worked solution →Which pair of states can both flow like a fluid?Read the answer and worked solution →Which particles are found in the nucleus at the centre of an atom?Read the answer and worked solution →Which of these is a property of matter rather than a substance itself?Read the answer and worked solution →The idea that matter is made of separate tiny blocks is called which theory?Read the answer and worked solution →Which method can separate pure water from salt water by boiling and cooling the steam?Read the answer and worked solution →Sea water holds salts, water and other things together. How is it best described?Read the answer and worked solution →
Worked practice questions
In air, which gas is the main one in which the others are dissolved?
- Oxygen gas
- Nitrogen gas
- Hydrogen gas
- Argon gas
Show answer and solution
Correct answer: B. Nitrogen gas
Air is a gaseous solution with oxygen and other gases dissolved in nitrogen, its major part.
Two different gases are kept together in a closed jar. What happens?
- They form layers like oil and water
- One gas turns into a liquid
- They mix completely in any proportion
- They stay in two separate halves
Show answer and solution
Correct answer: C. They mix completely in any proportion
Gases are miscible in all proportions, so they spread and mix completely.
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