Chemistry
Assertion (A): Phosphorus when dissolved in carbon disulphide is a non aqueous solution.
Reason (R): Solutions of substances in a solvent other than water are called non aqueous solutions.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Answer
Both A and R are true and R is the correct explanation of A.
Explanation — Carbon disulphide is a non-aqueous liquid solvent. Phosphorus when dissolved in carbon disulphide forms a non aqueous solution.
Water is not the only solvent. Alcohol, petrol, ether, benzene, carbon disulphide, liquid ammonia, etc. are some non-aqueous liquid solvents in common use. The solutions made in these liquids are known as non-aqueous solutions. Hence, both the assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
Related Questions
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Reason (R): Efflorescence occurs when the vapour pressure of the hydrated crystals exceeds the vapour pressure of the atmospheric humidity.
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Reason (R): A solution which is saturated at a given temperature, becomes unsaturated at a higher temperature.
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Reason (R): Conc. H2SO4 is a deliquescent substance.
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