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(A) : Metals are isotropic solids ( R)...

(A) : Metals are isotropic solids
( R) : Metals are composed of large number of minute crystals which are randomly oriented resulting in isotropy

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

Both (A) and (R) are false

Text Solution

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The correct Answer is:
A
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(A) Metallic solids are electrical and thermal conductors (R) Metallic solids have mobile electrons

Passage-I : Metallic sulphates can be obtained by reacting the metals (above hydrogen in ECS), or its oxide, hydroxide or carbonate with dil. H_(2)SO_(4) . Group IA metals also form hydrogen sulphates which can be isolated in solid. In general metal sulphates are soluble in water and crystallize with water of crystallization. Sulphates are thermally more stable than nitrates. Which metal sulphate will decompose into SO_(3) and metal oxide when heated:

Passage-I : Metallic sulphates can be obtained by reacting the metals (above hydrogen in ECS), or its oxide, hydroxide or carbonate with dil. H_(2)SO_(4) . Group IA metals also form hydrogen sulphates which can be isolated in solid. In general metal sulphates are soluble in water and crystallize with water of crystallization. Sulphates are thermally more stable than nitrates. Among the metals given below, which metal will not give its sulphate on treatment with dil. H_(2)SO_(4) .

Passage-I : Metallic sulphates can be obtained by reacting the metals (above hydrogen in ECS), or its oxide, hydroxide or carbonate with dil. H_(2)SO_(4) . Group IA metals also form hydrogen sulphates which can be isolated in solid. In general metal sulphates are soluble in water and crystallize with water of crystallization. Sulphates are thermally more stable than nitrates. Select the stable hydrogen sulphate which can be obtained in solid state:

Passage-I : Metallic sulphates can be obtained by reacting the metals (above hydrogen in ECS), or its oxide, hydroxide or carbonate with dil. H_(2)SO_(4) . Group IA metals also form hydrogen sulphates which can be isolated in solid. In general metal sulphates are soluble in water and crystallize with water of crystallization. Sulphates are thermally more stable than nitrates. Select the sulphate which is water soluble:

Passage-I : Metallic sulphates can be obtained by reacting the metals (above hydrogen in ECS), or its oxide, hydroxide or carbonate with dil. H_(2)SO_(4) . Group IA metals also form hydrogen sulphates which can be isolated in solid. In general metal sulphates are soluble in water and crystallize with water of crystallization. Sulphates are thermally more stable than nitrates. When BaCl_(2) solution is added in aq. Solution of NaHSO_(4) a white ppt. is obtained which is of:

Passage-I : Metallic sulphates can be obtained by reacting the metals (above hydrogen in ECS), or its oxide, hydroxide or carbonate with dil. H_(2)SO_(4) . Group IA metals also form hydrogen sulphates which can be isolated in solid. In general metal sulphates are soluble in water and crystallize with water of crystallization. Sulphates are thermally more stable than nitrates. Select the thermally more stable salt from given pairs: A) Al_(2)(SO_(4))_(3)" "B)Al(NO_(3))_(3)" "C) Ca(NO_(3))_(2)" "D) CaSO_(4)" "E )FeSO_(4)" "F) Fe(NO_(3))_(2)

AAKASH SERIES-THERMAL PROPERTIES OF MATTER-EXERCISE-IB
  1. (A) : Metals are isotropic solids ( R) : Metals are composed of larg...

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  2. (A) : When a circular disc with a hole is heated, the diameter of the ...

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  3. (A) : Steel rods are used in R.C.C. ( R) : Both steel and R.C.C. hav...

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  4. (A) : When a Bimetalic strip made up of Brass and Iron is heated then ...

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  5. (A) : Invar is used in metal tapes, balance wheels and pendulum clocks...

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  6. (A) : A brass disc fits snugly in the hole of the iron plate. To remov...

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  7. (A) : In summer, the pendulum clock runs slow. ( R) : As temperature...

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  8. (A) : A tightly closed metal lid of a glass bottle can be opened more ...

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  9. (A) : A man would feel iron or wooden balls equally hot at 98.4^(@)F. ...

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  10. (A) : Fahrenheit is the smallest unit in the measurement of temperatur...

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  11. (A) : Solids expand on heating. ( R) : Potential energy of the atoms...

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  12. (A) : Solids expand on heating. ( R) : Atoms of the solid are an har...

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  13. (A) : Thermal expansion of solids is due to the anharmonicity of the l...

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  14. (A) : In laying down a railway track a small gap is left between the e...

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  15. (A) : Some times water pipes burst in severe winter. ( R) : On freez...

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  16. (A) : When a strip made of iron and copper is heated it bends with iro...

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  17. (A) : Reading of temperature may be same on Fahrenheit and Kelvin scal...

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  18. (A) : Two bodies at the same temperature may contain different amount ...

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  19. (A) : A clinical thermometer is usually much shorter than a laboratory...

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  20. (A) : A hollow bottle retains its shape when heated. ( R) : When hol...

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