Question # 1

Which disease is caused by polluted water.

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Cholera

Typhoid

Diarrhea

All of them

Which one of these hydrocarbon molecules would have no effect on an aqueous solution of bromine?

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CH₄

C₁₀H₂₀

C₂H₄

C₂H₂

The reaction in which the products do not recombine to form reactants are called.

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Inversible reactions

Reversible reaction

Decomposition

Addition

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

Which is the essential sugar found in milk?

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Maltose

Lactose

Galactose

Starch

Substitution reaction is the characteristics of.

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Alkanes

Alkenes

Alkynes

None of these

Chemical form of gypsum.

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MgSO₄. 5H₂O

CaSO₄. 2H₂O

FeSO₄. 5H₂O

CuSO₄. 5H₂O

Marsh gas is mostly consisted of.

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Butane

Propane

Ethane

Methane

Which salt is used for the manufacture of detergents, pulp and paper?

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NaCl

Na₂CO₃

Na₂SiO₃

NaCl

Which is not a poisonous gas?

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Ozone

Chlorine

Carbon di oxide

All of them

Which of the following can be used as a fuel?

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Methanol

Ethanol

Bio-diesel

All of them

A base is a substance which neutralizes an acid which of these substances is not a base?

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Aqueous ammonia

Sodium chloride

Sodium Hydroxide

Calcium Hydroxide

The density of water is ................. at 4^oC

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1 gcm^-1

2 gcm^-1

3 gcm^-1

4 gcm^-1

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