NEET (NTA)-National Eligibility cum Entrance Test (Medical) Chemistry: Questions 49 - 55 of 1259

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Question number: 49

» Chemical Thermodynamics » Types of Processes » Isothermal

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MCQ▾

Question

Calculate q for the reversible isothermal expansion of one mole of ideal gas at 127°C

From a volume of 10 dm3 to 20 dm3.

Choices

Choice (4)Response

a.

2.305J

b.

-2305.3J

c.

-2.305J

d.

2305.3J

Question number: 50

» Chemical Thermodynamics » Types of Processes » Adiabatic

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MCQ▾

Question

For an adiabatic process, which of the following is correct?

Choices

Choice (4)Response

a.

P V = 0

b.

q =+w

c.

∆ q = 0

d.

∆ E = q

Question number: 51

» Chemical Thermodynamics » First Law of Thermodynamics » Exothermic Reactions

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MCQ▾

Question

Enthalpy of combustion of C 6 H 6 (l) - 3264.6 KJ/mol. The heat produced by burning 3.9 g of benzene is?

Choices

Choice (4)Response

a.

-32.64 KJ

b.

-163.23 KJ

c.

-3.264 KJ

d.

-326.4 KJ

Question number: 52

» Chemical Thermodynamics » First Law of Thermodynamics » Endothermic Reactions

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MCQ▾

Question

In endothermic reactions, which of the following is correct?

Choices

Choice (4)Response

a.

∆ H =+ve

b.

∆ H =-ve

c.

Heat supplied to surroundings

d.

H R > H P

Question number: 53

» Basic Concepts in Chemistry » Matter and Its Nature

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MCQ▾

Question

Those which do not allow the flow of current through them are termed as?

Choices

Choice (4)Response

a.

Insulators

b.

Electrodes

c.

Electrolyte

d.

Conductors

Question number: 54

» Redox Reactions & Electrochemistry » Half - Cell and Cell Reactions

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MCQ▾

Question

The cell reaction is the standard reduction potentials of Mg and Cu are and respectively. The emf of the cell is?

Choices

Choice (4)Response

a.

b.

c.

-2.714 V

d.

Question number: 55

» Redox Reactions & Electrochemistry » Electrolytic and Galvanic Cells

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MCQ▾

Question

In a galvanic cell the electrons flow from?

Choices

Choice (4)Response

a.

Anode to cathode through the solution

b.

Cathode to anode through the solution

c.

Cathode to anode through the external circuit.

d.

Anode to cathode through the external circuit

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