Question # 1

The standard reduction potential of Zinc is

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0.76V

0.34

-0.34V

-0.76V

Stronger the oxidizing agent, higher is

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Redox potential

Standard reduction potential

Reduction potential

_{Oxidation potemial}

Which of the following metal does not liberate hydrogen on reaction with acid?

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Mg

Pt

Zn

Ca

The element with highest E°red

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N

F

O

CI

Which one of the following elements is the strongest reducing agent?

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Chlorine

Sodium

Magnesium

Aluminium

On ascending the electrochemical series strength as reducing agent

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Increases

Decreases

Remains same

not determinable

The potential difference set up at 25 C and 1 atm when clectrode is dipped m Tis one molar ionic sohution is called

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Single electrode potential

electrode potential

Standard electrode potential

Standard hydrogen electrode

The cell which converts electrical energy to chemical energy is called

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Electrochemical cell

Voltaic cell

Galvanic cell

Down's cell

SHE acts as anode when connected with Cu electrode but act as cathode with Zn electrode

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Zn has less reduction potential than hydrogen and Cu

Zn has high reductionl potential than hydrogen

and Cu

Zn is below electrochemical series than hydrogen and Cu

Zn has least tendency to lose electron

The electrochemical series is based on

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pH scale

Redox scale

Hdrogen scale

Arrhenius scale

Stronger is the oxidizing agent, stronger is the

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emf of cell

Oxidation potential

Reduction potential

The reaction which is responsible for the production of electricity in the voltaic cell is

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Hydrolysis

Oxidation

Reduction

Redox

Which molecule is least ionic"

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NaCI

HCL

HF

CsF

In SO-²4 the oxidation number of sulphur is

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-8

-6

+8

+6

Which of the following best describes the shape and polarity of the carbon disulphide molecule?

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Bent and polar

Linear and non-polar

Pyramidal and polar

Bent and non-polar

The value of oxidation number of chlorine in HCIOs is

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+7

+5

-1

+3

When a metal rod is dipped in its one molar ionie solution

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Electricity is produced

Electricity is consumed

Redox reaction occurs

Potential difference is set up

In all oxidation reactions, atoms of an element in a chemical species lose electrons and increases their

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Oxidation states

Reduction states

Electrode

Negative charges

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