Question # 1

All water soluble metallic oxides have characteristic of:

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acidic

basic

neutral

amphoteric

Condensed formula of ethane is.

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C₃H₈

C₂H_2n+2

C₂H_2n-2

C_nH_2n+1

Composition of carbon in kerosene oil is.

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C₁₀-C₁₂

C₁₂-C₁₂

C₁₆-C₁₈

C₃₀-C₃₀

Which factor determines the severity of a pollutant?

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Chemical nature

concentration

Persistence

All of them

General formula of carbohydrates is.

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C_n(H₂O)₆

C_n(H₂O₂)₆

C_n(H₃O)₆

C_n(H₂O₃)₆

Which one of the following is testeless?

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Sucrose

Glucose

Fructose

Starch

The carbon contents in lignite is.

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80%

50%

60%

70%

Ethyl butanoate smells like.

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Apple

Pine apple

Lemon

Melon

Earth has natural systems.

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One

Two

Three

Four

Which part of digestive system glucose absorb.

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Stomach

Liver

Small intestine

Large intestine.

Which is a Lewis base?

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H⁺

NH₄

BF₃

AlCl₃

Concentration is a .

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Mixing technique

Separating technique

Boiling technique

cooling technique

Which of the following is a secondary pollutant.

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CO₂

CO

SO₃

HF

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