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प्रश्न
37% of our brain‛s mass consists of water.
विकल्प
True
False
MCQ
सत्य या असत्य
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उत्तर
37% of our brain‛s mass consists of water- False.
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संबंधित प्रश्न
Why is water very precious for all living being ?
Freezing mixture contains ............. and .............
Why is water considered a compound?
Identify A, B, C and D; first one is done for you.
Explain why:
Fused CaCl2 or conc. H2SO4 is used in a desiccator.
What do you understand by soft water?
Compare the effect of soaps and detergents on hard water.
Name one substance which is ‘deliquescent’.
Give the influence of pressure.
Match the terms in List I with the correct answers in List II.
| List I | List II |
| 1. Solubility in a given solvent decreases with an increase in temperature. | A: Na2SO4.10H2O |
| 2. A white efflorescent crystal | B: NaOH |
| 3. A hygroscopic dehydrating agent | C: Ca(HCO3)2 |
| 4. A deliquescent alkali | D: conc. H2SO4 |
| 5. A substance present in temporary hard water | E: CaSO4 |
