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[A]: Dental formula is the number of tee...

[A]: Dental formula is the number of teeth in upper jaws of one side and low jaw of same side
[B]: This can be used for non mammalian and insectivorous mammals also.

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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The correct Answer is:
C
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The boiling point elevation and freezing point depression of solutions have a number of partical applications. Ethylene glycol (CH_(2)OH-CH_(2)OH) is used in automobile radiatiors as an antifreeze because it lowers the freezing point of the coolant. The same substance also helps to prevent the radiator coolant from boiling away by elevating the boiling point. Ethylene glycol has low vapour pressure. We can also use glycerol as an antifreeze. In order for the boiling point elevation to occur, the solute must be non-volatile, but no such restriction applies to freezing point depression. For example, methanol (CH_(3)OH) , a fairly volatile liquid that boils only at 65^(@)C , is sometimes used as an antifreeze in automobile radiators. If the cost of glycerol, glycol, and methanol is same, then the sequence of economy to use these compounds as antifreeze will be

The boiling point elevation and freezing point depression of solutions have a number of partical applications. Ethylene glycol (CH_(2)OH-CH_(2)OH) is used in automobile radiatiors as an antifreeze because it lowers the freezing point of the coolant. The same substance also helps to prevent the radiator coolant from boiling away by elevating the boiling point. Ethylene glycol has low vapour pressure. We can also use glycerol as an antifreeze. In order for the boiling point elevation to occur, the solute must be non-volatile, but no such restriction applies to freezing point depression. For example, methanol (CH_(3)OH) , a fairly volatile liquid that boils only at 65^(@)C , is sometimes used as an antifreeze in automobile radiators. 124 g each of the two reagents glycol and glycerol are added in 5 kg of water of the radiators in two cars. Which of the following statements is wrong?

The boiling point elevation and freezing point depression of solutions have a number of partical applications. Ethylene glycol (CH_(2)OH-CH_(2)OH) is used in automobile radiatiors as an antifreeze because it lowers the freezing point of the coolant. The same substance also helps to prevent the radiator coolant from boiling away by elevating the boiling point. Ethylene glycol has low vapour pressure. We can also use glycerol as an antifreeze. In order for the boiling point elevation to occur, the solute must be non-volatile, but no such restriction applies to freezing point depression. For example, methanol (CH_(3)OH) , a fairly volatile liquid that boils only at 65^(@)C , is sometimes used as an antifreeze in automobile radiators. 620 g glycol is added to 4 kg water in the radiator of car. What amount of ice will separate out at -6^(@)C ?

The boiling point elevation and freezing point depression of solutions have a number of partical applications. Ethylene glycol (CH_(2)OH-CH_(2)OH) is used in automobile radiatiors as an antifreeze because it lowers the freezing point of the coolant. The same substance also helps to prevent the radiator coolant from boiling away by elevating the boiling point. Ethylene glycol has low vapour pressure. We can also use glycerol as an antifreeze. In order for the boiling point elevation to occur, the solute must be non-volatile, but no such restriction applies to freezing point depression. For example, methanol (CH_(3)OH) , a fairly volatile liquid that boils only at 65^(@)C , is sometimes used as an antifreeze in automobile radiators. Which among the following is the most volatile and the best antifreeze?

TRUEMAN BIOLOGY-Animal Physiology -ASSERTION AND REASON
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  2. [A] : Lymphocytes arise from bone marrow and present in the blood, ly...

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  3. [A]: Dental formula is the number of teeth in upper jaws of one side a...

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  4. [A] : Synaptic vesicles fuse with membrane and release neurotransmitt...

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  5. [A] : Each myosin filament is composed of about 500 thread iike myosin...

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  6. [A] : Retinene is a constituent of vitamin A (retinol). [R]: Vitamin...

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  7. [A] : Haversian canals are inter connecting canals that run usually lo...

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  8. [A] : Cartilage (Protein matrix) and Bone (Calcium matrix) are rigid ...

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  9. Assertion : In the descending limb of loop of Henle , the urine is hyp...

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  10. [A] : Nephritis is the inflammation of the lungs and muscles. [R]: ...

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  11. [A] : The urinary bladder is capable of considerable expansion in vol...

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  12. [A] : Deamination occurs by transaminase enzyme in kidney. [R]: Rem...

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  13. [A] : Hydrostatic pressure in blood forces wa- ter and other solutes ...

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  14. [A] : Extracellular fluid serves as the sanitary drainage line of the...

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  15. [A] : [A]: ECG is a record of electrical activity of the heart that sh...

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  16. [A] : Regulation of the rate of breathing is brought about by the resp...

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  17. [A] : Role of RBC' In CO2 transport Is primarily to form HCO3 - for c...

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  18. [A] : SA node is contraction centre or Pace Maker. [R]: Nodal fibre...

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  19. [A] : Acetylchoiine allows a nerve cell to com- municate chemically w...

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  20. A : Transmission of the nerve impulse across a synapse is accomplishe...

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