Which is /are correct statement ?...

Which is /are correct statement ?

No corrosion takes place in vaccum

Corrosion is protected by electroplating

During rusting `Fe_2O_3*xH_2O` formed

In presence of electrolyte, corrosion takes place with greater rate

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The correct Answer is:

A, B, C, D

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Which is the correct statement about birth control pills?

Contain estrogen only.

Contain progesterone only

Contain a mixture of estrogen and progesterone derivatives

progesterone enhances ovulation.

Contain estrogen only.

Contain progesterone only

Contain a mixture of estrogen and progesterone derivatives

progesterone enhances ovulation.

Starch is a polymer of `alpah` -glucose

Amylose is a compound of cellulose

Proteins are compounds of only one type amino acid

In cyclic structure of fructose, there a four carbons and one oxygen atom.