Question # 1

Magnesium metal does not burn in the jar of

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N2

O2

Ne

N2 and O2

Formalin is

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10% solution of formaldehyde in water

20% solution of formaldehyde in water

40% solution of formaldehyde in water

60% solution of formaldehyde in water

Ethanol can be converted into ethanoic acid by

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Hydrogenation

Hydration

Oxidation

Fermentation

Which one of the following will be required to form ethene from ethyl chloride.

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Alcoholic KOH

Aqueous KOH

Alkaline KMnO4

Bromine

Which one of the following methods is used for the preparation of ether.

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Kolbe's reaction

Frankland reaction

Williamson synthesis

Down's process

Which catalyst is used in contact process

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Fe₂O₃

V₂O₅

SO₃

Ag₂O

Which element burns in nitrogen atmosphere to form nitride.

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Mg

Al

Both a and b

None of these

Peroxyacetyl nitrate is an irritant to humab beings and it affects

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Eyes

Ears

Stomach

Nose

Which element reacts with carbon to form metal carbide.

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Li

Na

K

All of these

The macronutrients are required in quantities ranging from

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4-40 kg per acre

10-100 kg per acre

5-100 kg per acre

5-200 kg per acre

Potassium fertilizers are especially useful for

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Tobacco

Coffee

Potato

All of these

How much fresh water is used for domestic purpose

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8%

23%

69%

100%

Banana flavour is given by the ester

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Octyl acetate

Amyl butyrate

Amyl acetate

Ethyl butyrate

Which ion will have the maximum value of heat of hydration.

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Na+

Ca+

Ba+2

Mg+2

Starch is polymer is

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Fructose

a -d Glucose

Sucrose

B-D-Glucose

Which one is a disaccharide

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Glucose

Sucrose

Fructose

Cellulose

Which compound will have the maximum repulsion with water

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C₆H₆

C₂H₅OH

C₃H₇OH

CH₃OCH₃

Which one of the following gases is used in welding purpose usually

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Methane

Ethane

Ethene

Acetylene

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