Substances and Solvents
Questions about solubility, solutions, and properties of solutes and solvents for class 4 Environmental Studies
Questions
Which of the following option is incorrect?
- Substance that dissolve in water are said to be soluble in water.
- Substance that do not dissolve in water are said to be insoluble in water.
- Substances dissolves faster in cold water than hot water.
- Soluble and insoluble impurities in water bodies causes water pollution.
- Insoluble impurities in water can be separated by sedimentation, decantation and filtration.
Which of the following option is true?
- Heavy particles floats on the surface of water.
- Flowing water dissolves many soluble minerals present in the soil.
- Salt makes water muddy.
- Dirty water does not carry diseases that kill.
- None of these
Match the following.
| 1. Water table | A. water percolates through this layer |
| 2. Non porous rock | B. layer of ground water reserve |
| 3. Porous rock | C. underground water reserve lies on it |
- 1 - A, 2 - B, 3 - C
- 1 - B, 2 - A, 3 - C
- 1 - A, 2 - C, 3 - B
- 1 - B, 2 - C, 3 - A
- 1 - C, 2 - B, 3 - A
Match the following.
| 1. Solids | A. Molecules are loosely packed with weak force of attraction |
| 2. Liquids | B. Molecules are closely packed with strong force of attraction |
| 3. Gases | C. Molecules are very loosely packed with weak force of attraction |
- 1 - A, 2 - C, 3 - B
- 1 - B, 2 - A, 3 - C
- 1 - A, 2 - B, 3 - C
- 1 - C, 2 - A, 3 - B
- 1 - B, 2 - C, 3 - A
Roma dissolves a spoon of honey in a glass of water. The water becomes sweet in taste. What is the solute in this experiment?
- Water
- Honey
- Sweet water
- Both Honey and water
- None of the above
Study the following table and answer the questions.
| Substance | Solvent | Remark |
| Sand | Water | Does not dissolves |
| Sugar | Water | Dissolves |
| Salt | Water | Dissolves |
| Water | Kerosene | Does not dissolves |
| Oxygen | Water | Dissolves |
Name the solutes which is soluble in water.
- Sand and sugar
- Sand and salt
- Salt and kerosene
- Sugar and salt
- Kerosene and sand
Match the following.
| 1. Water | A. Solute |
| 2. Sugar | B. Insoluble |
| 3. Sugar and water | C. Solvent |
| 4. Sand and water | D. Soluble |
- 1 - C, 2 - A, 3 - B, 4 - D
- 1 - C, 2 - A, 3 - D, 4 - B
- 1 - A, 2 - C, 3 - B, 4 - D
- 1 - A, 2 - D, 3 - B, 4 - C
- 1 - B, 2 - A, 3 - D, 4 - C
Varun took a cup of water and dissolves two spoons of salt in it. Later he placed the salty water under the sunlight for three days. He found only crystals of salt but no water remaining in the cup. Which of the following processes is being demostrated in the above experiment ?
- Filteration
- Boiling
- Condensation
- Evaporation
- Decantation
Study the following table and answer the questions
| Substance | Solvent | Remark |
| Sand | Water | Does not dissolves |
| Sugar | Water | Dissolves |
| Salt | Water | Dissolves |
| Water | Kerosene | Does not dissolves |
| Oxygen | Water | Dissolves |
Which of the following substance is insoluble in water?
- Sand
- Sugar
- Salt
- Kerosene
- Both option 1 and 4
Shreya took two cups, one containing warm water and the other one cold water. She put a spoon of sugar in to each cup and stirred the mixture properly. What will be her observation while doing this experiment?
- Sugar is insoluble in cold water.
- Sugar dissolve quickly in cold water.
- Sugar dissolve quickly in warm water.
- Sugar took same time to dissolve in both cups.
- After mixing sugar the water become sandy in both cups.
Arun was doing a science activity. While doing this activity he made a mistake in writing his observation. Which among the following is wrong in the following table?
| Substances put in water | Soluble / Insoluble |
| 1. Sugar | Soluble |
| 2. Sand | Soluble |
| 3. Tea leaves | Insoluble |
| 4. Talcum powder | Insoluble |
- Option number 1
- Option number 2
- Option number 2 and 3
- Option number 4
- Option number 3
Match the following.
| 1. Water | A. Solution |
| 2. Sand in water | B. Solvent |
| 3. Alcohol | C. Universal Solvent |
| 4. Sugar in water | D. Insoluble impurities |
- 1 - A, 2 - C, 3 - D, 4 - B
- 1 - D, 2 - A, 3 - B, 4 - C
- 1 - C, 2 - D, 3 - A, 4 - B
- 1 - C, 2 - D, 3 - B, 4 - A
- 1 - D, 2 - A, 3 - D, 4 - C
Study the following table and answer the question:
| Substance | Solvent | Remark |
| Sand | Water | Does not dissolve |
| Sugar | Water | Dissolves |
| Salt | Water | Dissolves |
| Water | Kerosene | Does not dissolve |
| Oxygen | Water | Dissolves |
Which of the following is a solution of a gas in a liquid?
- Sugar in water
- Salt in water
- Water in kerosene
- Oxygen in water
- Sand in kerosene