Consider the following statements regarding solar distillation : 1. Distillation is the process to convert saline water into freshwater. 2. About 20 percent of water available on the earth is brackish. 3. Only 30 percent of water available on the earth is fresh. Which of the above statements are correct?
To determine the correct statements regarding solar distillation, let's evaluate each statement:
Statement 1: Distillation is the process to convert saline water into freshwater.
This statement is correct. Distillation involves heating saline water to produce vapor and then condensing it back into liquid, resulting in freshwater by removing impurities and salts.
Statement 2: About 20 percent of water available on the earth is brackish.
This statement is incorrect. In reality, only a small percentage of the Earth's water is brackish. Most water is either saline or fresh, with about 97.5% being saline and only a small portion, approximately 1% of the total water supply, being brackish.
Statement 3: Only 30 percent of water available on the earth is fresh.
This statement is incorrect. Approximately 2.5% to 3% of the Earth's total water resources are fresh, not 30%.
Based on the analysis:
- Statement 1 is correct.
- Statement 2 is incorrect.
- Statement 3 is incorrect.
Therefore, the correct answer is 1 only.
Important Questions from Miscellaneous-Engineering
Consider the following statements regarding solar space heating system:
1. Passive systems do not require any mechanical device and make use of natural process of convection, radiation and conduction for transport of heat.
2. Uses of active heating systems put restrictions on the building design to make possible the flow of heat naturally.
3. Active heating systems employ mechanical devices to circulate the working fluid for transportation of heat.
Which of the above statements are correct?
- Which one of the following amplifiers is called an emitter follower?
During the compaction test, the weight of compacted soil specimen along with mould is 38.2 N. The volume and weight of mould are 0.95×10-3 m³ and 20.5 N respectively and the water content is 12%. The dry unit weight of the compacted specimen will be nearly
- Which one of the following is a time-dependent reversible process in which materials under constant composition and volume soften when remolded?
- The compressibility of a saturated, clay-water system is determined by means of the apparatus devised by Terzaghi known as
