Question # 1

Setting of plaster of paris involves

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Oxidation with atmospheric oxygen

Combination with atmosphere CO₂

Dehydration

Hydration to yield another hydrate.

Octane number is zero for

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n-Heptane

Isooctane

n-Hexane

Isoheptane

Isopropyl alcohol on oxidation forms

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Acetone

Ether

Ethylene

Acetaldehyde

Which of the following is different from the other three oxides?

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MgO

SnO

ZnO

Cr₂O₃

Cannizzaro reaction is not given by

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Trimethyl acetaldehyde

Acetaldehyde

Benzaldehyde

Formaldehyde

Detergents are

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Synthetic products

Natural products

Both A and B

None of the above

Which of the following transition metal ions will have definite value of magnetic moment?

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Sc³⁺

Ti³⁺

Cu⁺

Zn²⁺

Sodium thiosulfate is used in photography because of its

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Oxidizing behaviour

Reducing behaviour

Complexing behaviour

Photochemical behaviour

Which of the following has greatest reducing power?

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HI

Hbr

HCI

HI

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