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objective Ques (61 results)
21)

The bond energy is the energy required to

JEE Physics
A)

dissociate one mole of the substance

B)

dissociate bond in 1 kg of the substance

C)

break one mole of similar bonds

 

D)

break bonds in one mole of substance

22)

Heat of combustion of carbon monoxide at constant volume and at 17° C is - 67710 cal. The heat of combustion at constant pressure is

JEE Physics
A)

 - 68000 cal

B)

 - 67800 cal

C)

 - 67050 cal

 

D)

 + 68500 cal

23)

Which is correct for an endothermic reaction ?

JEE Physics
A)

∆H is negative

B)

∆H is positive

C)

∆E is negative

 

D)

∆H = 0

24)

For the gaseous reaction involving the complete combustion of iso-butane

JEE Physics
A)

∆H = ∆E

B)

∆H > ∆E

C)

∆H < ∆E

 

D)

None of these

25)

Heat liberated with 100 mL of 1 N NaOH is neutralised by 300 mL of 1 N HCl

JEE Physics
A)

11.56 kJ

B)

22.92 kJ

 

C)

5.73 kJ

D)

17.19 kJ

26)

Heat required to raise the temperature of 1 mole of a substance by 1° is called

 

JEE Physics
A)

molar heat capacity

B)

specific heat

C)

water equivalent

 

D)

specific gravity

27)

If ∆G for a reaction is negative, you infer that the change is

JEE Physics
A)

spontaneous

B)

non-spontaneous

C)

reversible

D)

irrevrsible

 

E)

equilibrium

28)

What will be the value of ∆G for ice at 8°C temperature ?

JEE Physics
A)

One

 

 

 

B)

Zero

C)

Negative

D)

Positive

29)

One mole of which of the following has the highest entropy?

JEE Physics
A)

Liquid nitrogen

B)

Hydrogen gas

C)

Mercury

 

D)

Diamond

30)

Gibb's free energy G, enthalpy H and entropy S are interrelated as in 

JEE Physics
A)

G = H + TS

B)

 G = H - TS

C)

 G - TS = H

 

D)

 G = S = H

showing 21 - 30 results of 61 results

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