Question # 1

Methyl orange produces which colour in basic solution

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Red

Yellow

Pink

White

Which of the following is a poisonous gas.

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Oxygen

Ozone

Nitrogen

Carbon dioxide

All bases turn red litmus

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Red

Blue

Pink

White

The reaction in which the number of moles reactants and products not equal in balance chemical equation the units of Kc for this reactions are

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mol^-2

dm³

mol²

mol dm^-1

The plant use

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Carbon di oxide

Oxygen

Nitrogen

Sulphur

The general formula of alkane is

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C_nH_2n+2

C_nH_2n-2

C_nH_2n

C_nH_2n+1

Which one is the formula of chloromethane.

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CH₂Cl₂

CCl₄

CHCl₃

CH₃Cl

In hydrogenation of vegetable oil catalyst employed is.

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Ni

Pt

ZnO

Cr₂O₃

About 99% of atmospheric mass lies in.

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35 km

30 km

15 km

16 km

Ethyl butanoate smells like.

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Apple

Pine apple

Lemon

Melon

Higher concentration of CO causes.

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Fatique

Headache

Both of them

None of them

When acid reacts with sulphites and Bi sulphates which gas is evolved?

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H2

CO₂

SO₂

NH₃

Carbohydrates are synthesized by plants through.

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Respiration

Photosynthesis

Dehydrateion

Evaporation

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