Question # 1

The percentage of oxygen in NaOH is

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40

60

8

10

The formula of calcium cyanamide is

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Ca(CN)₂

CaC₂N

CaNCN

CaCHNH₂

The wire in the flash bulbs is made up of

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Mg

Ba

Cu

Ag

If a salt bridge is removed between the two half cells the voltage

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Drops to zero

Does not change

Increases gradually

Increases rapidly

Heating a micture of sodium benzoate and soda lime gives

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Benzene

Methane

Sodium benzoate

Calcium benzoate

Which of the following cannot be produced by acidic dehydration of alcohols?

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Ethers

Aldehyde

Alkyl Hydrogen sulphate

Alkene

Which of the following geometry is associated with the compound in which the central atom assumes sp³ d hybridization?

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Planar

Pyramidal

Angular

Trigonal bipyramidal

Benzene + Ozone → Y. in this sequence Y is

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Benzene monoozonide

Benzene diozonide

Benzene triozonide

Succinic acid

For the carbylamine reaction we need hot alc.KOH and

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Any amin and chloroform

Chloroform and Ag powder

A primary amine and chloroform

A mono alkyl amine and trichlorom-ethane

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