Question # 1

The accumulation of which vitamin causes bone like deposits in the kidney.

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Vitamin D

Vitamin E

Vitamin B

Vitamin A

When CaCO_3,.is heated in an open flask, it decomposes to form calcium oxides and .

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O₂

CO

CO₂

CO₃

The process of removing temporary hardness of water.

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Clark's method

Washing soda method

Sodium zeolite

Filteration method

Which of the following gas is used to destroy harmful bacteria in water.

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Iodine

Chlorine

fluorine

Bromine

The functional group- COOH is found in

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Carboxylic acid

aldehydes

alcohals

easter

Blast furnace usually used for the metallurgy of.

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Iron

Copper

Aluminum

Both a and b

Which is present 85% in natural gas?

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Ethane

Propane

Methane

Butane

Which of following is not conjugate base.

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S^-2

F^-1

Na⁺

SO₄

Which disease cause when humans use water of industrial effluents.

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Cancer

Asthma

Jaundice

cholera

Which one the following is more reactive?

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Methane

Ethane

Ethene

Acetylene

Alkyl radical is derivative of

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Alkane

Alkene

Alkyne

All

Formula of Potassium ferrocyanide.

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K₄[Fe(CN)₆]^-4

K₃[Fe(CN)₄]^-3

K₂[Fe(CN)₆]^-4

K₄[Fe(CN)₅]^-4

Which one is not a characteristic of an acid:

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it turns red litmus blue

it reacts with base to form salt and water

Its aqueous solution conduct electric current

it has sour taste

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